The Speaker

The Voice of Nesda Ohio
Electronics Servicing Professionals June 2010 Edition
Meeting 4/20/10 LCD Dissection Part Duex
NESDA American Pride Visit our Website www.nesda-ohio.com Please Patronize
Our Sponsors. They Make This Publication Possible !!! PacParts, inc. Dalbani Union Electroncs Encompass Parts B&D Enterprises Andrews Electronics PTS Electronics ShopJimmy.com
The Meeting was called to order at 7:30pm by President Bob Lowe, following a Fine repast prepared by him. (Chef Timmie, Eat your Heart Out!). Present were Rich Uminski, Jim Mancuso, Dave Downey. Jim Knoble, Bob Lowe, Keith White, Omar Garltic, Doug Rust, Tim Murtz, Jeff Biro, and Joe Sopko. New member Jeff Biro from Stewarts Appliance in Elyria was introduced and welcomed. Jeff is a replacement for retiring Stewarts employee Doug Rust. We wish Doug the Best in having achieved Retirement in a field that many others may not be able to retire from. A celebration of his endurance was held with Cake furnished by your association and there was applause all round. This meeting is a Replacement for the February Meeting which was anticipated to be an interesting one, but was not consummated due to the snowy weather greatly diminishing attendance. There was No March meeting since LG had invited nesdaOHIO members to their Technical training held in various cities during the month of March. So we had been waiting a long time for this, the topic of interest being: The Dissection of a LCD Display Panel by Dr. Tim Murtz of Excel Television in Bedford Hts, Oh. During the time elapsed since the last meeting, President Bob Lowe had ordered CCFL Backlights for the subject LCD Panel, as that malady had been diagnosed previously. Dr. Tim gingerly opened the LCD Television under the watchful eyes of the nesdaOHIOANS. Since few of our members had ever disassembled a Panel, we viewed eagerly as he went through the disassembly step by step. The onlookers commented and pointed out items of interest as the dissection progressed. We saw the Diffusers, the LCD Display itself, the Famed (or infamous) T-Con Board, and finally the Backlights themselves. The process took less time that we had imagined, the 2 broken CCFLs were replaced, then the set was turned on to see if it Newsletter Hotline ! actually lit up once we were done with it. Got A News Item ? Tech-Tip ? Correction ? Please Contact: Cont. on page 3. With Photos Joe Sopko, 216-381-1140 jsopko112@aol.com Chief writer Joe Sopko sez: OR Ron Purkhiser, The economy is SO Bad. 352-666-4773 Motel Six won't leave the light on anymore. rpurkhis@tampabay.rr.com

Dr. Tim

In This Issue :
LCD Dissection 1 Tech-Tips 4 Toshiba MW24FMCET teaser 5 Doug Rust Retires 5 RCA VCR VRPhilips L04.Toshiba 13AChef Timmy 12 Kenwood Stereo BBComputer Illiterate 16 Toshiba 27AMeeting Info 18

The Speaker June 2010

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Cont. from front page There were big smiles when a Snowy screen appeared on the face of the LCD Panel, and even bigger smiles when WV Member Jim Knoble attached his LG DVD Player as a signal source. We looked closely and critically at the picture, both with motion video and with stationary test patterns, and had to say that the results looked normal in all respects. For the cost of 2 - $17 dollar light bulbs, and some labor, this job could have been saved from the Kiss of Death that results when you try to quote a price for out-of-warranty panel replacement. President Bob Lowe brought down the gavel to end the meeting at 9:30. Next months meeting is scheduled for May 17th. 1. Frame Removed Respectfully Submitted Your Secretary
(153 days remaining on his sentence)

NESDA of Ohio

State President Bob Lowe, CET/CSM 440-247-7391 State Vice President Tim Murtz, CSM 440-232-5620 State Treasurer Rich Uminski, CSM 216-641-9470 State Secretary Joe Sopko, CET 216-381-1140 Directors Jim Mancuso 330-467-0777 Jim West, CSM 440-237-6888 Jeff O'Connor 724-775-7123
2. Goodbye Diffusers 3. LCD Display 4. Backlights Exposed
Newsletter Joe Sopko, CET 216-381-1140 Ron Purkhiser 352-666-4773

DISCLAIMER

Information presented in "The Speaker" is derived from many sources and is believed to be correct at time of printing. We make no guarantee, express or implied of the accuracy, efficacy, or safety of any of the techniques published. It is not intended to replace Manufacturer's Recommendations or good Safety and Troubleshooting practices. Use at your own Risk. The Speaker, its Writers and Staff, and Nesda of Ohio assume NO responsibility for damage to persons or property as a result of any information printed herein. Opinions stated are those of the author and not the Nesda of Ohio Newsletter. Opinions stated are believed to be true, and are offered in the spirit of helping other servicers but may have no basis in fact.

5. A CCFL

6. Snap-in CCFL

The look of Success

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Double Play on a Triple Player

BY: Speaker Staff Writer

It was only a couple of months ago that The Speaker's Sports editor wrote about a Triple Play - a Toshiba MW20FM1. What makes it a "Triple Play" is that this is a TV, a VCR, and a DVD Player all in one cabinet - and for those of us in Cleveland, who have suffered with the Indians for so many years, That's as close to a Triple Play that we're ever going to get. Well, It seems that there is ANOTHER Triple Play out there, and from the Same Ball Club: Toshiba. This, a MW24FM1, the 24 inch version of that product. It shares another similarity, for we recently narrated the 20 inch version for a "Dead Set" problem, and now we find the 24" product in identical condition. Same problem, Same Component Failures, Same Symptom, and Same Cure. We invite you to Read the case history in the Online Archives of The Speaker at www.nesda-ohio.com to refresh your memory, and to make a note that this Fix will apply equally to both the 20" AND the 24" versions of this set. I guess that makes it a "Double Play on a Triple Player". The Following URL should take you right to it: http://nesda-ohio.com/iwaynet/pubhtml/Jan10/Jan109.jpg

Tech Tips

Insignia LCD, Model NSLCD32 Problem: Dead Fix: Found C556 bad, 47uF/50V Toshiba TV, Model CF3566A Problem: Dead, relay might click Fix: Replaced all the following, IC801, 23319619, C863, R860 and R866, 0.18 /1 watt, and D442, 23316250. Mits TV, Model CS40307 Problem: Shuts down or turns off as soon as you turn it on. Fix: Found D961 open in the power supply Philips TV, Model 42PF9631D/37 Problem: Wont power on. 7 blink code Fix: Replaced caps C8059 and C8060. 3300uF/10V Sony TV, Model KV25XBR Problem: No picture or sound, but RGB and sleep light is on. Fix: Resoldering L1505 fixed the set. Sony TV, KD36FS130 Problem: Dead, 4 blink code. Fix: D503 shorted. 8-719-081-00
Mits TV, Model CK3531R Problem: Dark picture/no display Fix: Check for 13.6V at the base of Q654 on the CRT Bd. If missing check for open R688 off the base of Q654. #103P140090 RCA TV, MMC101 Problem: The VGA input picture is narrow in the 2H mode Fix: scan B+ at 90V but should be 120V. Found CR14809 was leaky, replacing it fixed the set. RCA TV, MMC101 Problem: Diagonal lines both ways at the top of the pic, Bottom of pic good. Fix: CR14502 was opening under a load. Hitachi TV, Model 60SDX88B Problem: Vert height wasnt right. Fix: Flex converter bad.
Fix: Replaced Q280 Horz Buffer Transistor. Hitachi TV, AP-3X and 4X Problem: Squeal in the audio Fix: Replacing IC3001 fixed the set. Video selection IC, #2004792. Hitachi TV, AP-1X and 2X Problem: Dead set Fix: Found 12V regulator Q0009 no good. 2327783, or 2SC3553 C/D Zenith TV, 9-1407 module Problem: Dead, fuse OK Fix: RX3456 in diode pack was bad. 0.68 /5W Mits TV, VS-5055 Problem: Convergence distortion Fix: Check for shorted or leaky Q8F02, #260P560040 and Q8F03, #260P386010 on the signal Bd.

Sanyo TV, Model DS31590 Problem: Dead, fuse blown. Lightning? Fix: Replaced the following: Q601, C4423 JVC TV, AV2651S or nte2324, Q604, C3807 or nte2504, Q605, Problem: Immediate shutdown. A1015 or nte290a, D612, PC817 or Fix: Found C525 bad. 0.0068/1.4KV nte3098, and the 4 amp fuse. Panasonic Combo , PVM2789 Problem: Dark pic, screen can not be adj. RCA TV, ATC010 Problem: Unit dead. Fix: Replaced C354, C524 & C824 The Speaker June 2010 Page 4

CET Brain Teaser

From the CET Study Guide and Practice Test
TODAYS QUESTION is presented in The Speaker just for fun with the permission of the ISCET, and maybe will get you started thinking about hanging out your own CET shingle. For more information, we invite you to visit the ISCET website at www.iscet.org We are grateful to them for allowing us to present this feature. Todays question is from the CET Associate level Study Guide provided by ISCET. You determine that the sine wave on the oscilloscope display is 15vp-p. What is the effective (RMS) value? 1. 2. 3. 4. 2.65 V-rms 5.3 V-rms 10.6 V-rms 21.2 V-rms
Correct answer on page 18

Doug Rust Retires !

NesdaOHIO wishes the best to Member Doug Rust upon his Retirement from Stewart's Appliance in Elyria, Ohio. Doug says that he has put the Fish Population of Ohio on notice, now that he has the time to go after them. A small celebration of his endurance was held at the last meeting of nesdaOHIO.

GOOD LUCK DOUG!

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QUICKIES
[EDITORS NOTE. NesdaOHIOANS (Some more than others). have come to know Bob Lowes Cousin Trixie very well She has always been a Professional as well as a Working Girl and it is only recently that she has taken to helping the ranks of readers of The Speaker in their daily tasks. We thank her for lending her name to this Column, and ask that you think of her when you think of a Quickie] Some stuff you just can't make a buck on unless you get In & Out very Quickly. Small stuff like VCR's or 13" TV's, so That's why we're running this column. If you go into a set Knowing what the trouble is, you can get out and make it a. well. A Quickie ! We'll feature a trouble on a piece of "small stuff" and if it fixes it for you, Great - If it doesn't, well you'll lose your. err. Backside on it if you spend any more time.

By: Bob Lowes Cousin Trixie
Maybe I have All I know is that after a little while with me, they Come Alive. I loosened his covers and Took off his Top and looked around a little bit. A few (Ahem) Measurements showed that there was no output from the Power Supplys secondary. I Called my friend Mr Dick Smith over for a little Mnage a Trois and we checked the Electrolytics around the SMPS.
Hello, Boys. (she says). Is that a Screwdriver in your pocket or are you just glad to see me?. (You can put your eyes back in their sockets now) Would you like a Quickie?. My Cousin Bob Lowe says that Everyone would like a Quickie and He Should Know! Well, Heres one Just for YOU! This one is on an RCA VCR Model VR552. The Poor thing was Dead. And it Was: It was laying there on the Bed Err I mean Workbench with it little feet up in the air and a lily on its chest. It was Dead as a Rock Dead as Yesterdays News Dead as Kelseys Nuts You get the Idea. He was sent to me because my cousin Bob Lowe says that I have had Great Success in Raising the Dead. It was there that we found the poor boys ailment! C-812, a 4.7 f @ 50v Capacitor in the Primary side of the SMPS had a high amount of ESR. A Quick Change to a new one allowed the Voltages to (Ahem) Rise. That Capacitor is the one that provides the Kick Start of voltage to the Base of the oscillator to start the thing working. Yeah, I know, you dont want any of that Technical Stuff. All you boys want to do is just get the act over and move on. Well, you can do that now Was it good for you? So, There you have it, Boys: Todays Quickie on a piece of Cheap stuff so that you can turn a quick Trick. err, I mean Buck. Think of me when you see one o These.Say, Is that a Smile I see on his Face?

C812 4.7@50v

Lots of Love Trixie
The Speaker June 2010 Page 7

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GRAND ROUNDS
A continuing feature here at "The Speaker" suggested by the practice used by Doctors in large teaching hospitals to distribute information about case histories. We actively solicit information from YOU, our readers, to be presented here for the benefit of all. Please send your submissions via email to jsopko112@aol.com. TODAYS CASE HISTORY: A Little Off-Center PATIENT NAME/NUMBER: Philips 32PT5441/37 Chassis L04.1 ATTENDING PHYSICIAN: Gregory House, MD DIAGNOSIS: The Philips L04.1 chassis was brought in via the emergency room with a Vertical Deflection complaint. There were 3 lines across the screen about a third of the way down from the top. The raster was blanked even though a station was tuned in, and there was some shrinkage from the sides. It was the consensus of the medical staff that we had never seen this particular problem before. A study of the medical literature available on The Force revealed that Vertical B+ and B- was found to be normal, as was the Regulated B+ for the Horizontal Circuitry. Transistor voltages in the vertical circuit were found to be abnormal, but not indicative of any specific failure. Resistance measurements across the EB & EC junctions of the Vertical transistors showed none to be shorted. It was determined that this was to be a difficult diagnosis. The Medical Library was consulted at the nesda "Tech-Mate" tips site and there were Three items listed as Vertical in the L04 folder. Users of Tech-Mate must remember to search not only by Model Number but also by CHASSIS in order to perform adequate research here. The information that you need might Not be identical under Both of those headings. Also important when using Tech-Mate is to click the Search box on the screen, rather than hitting your Enter Key. Hitting Enter will Not return search information for you. In this case, Two of of Tech-Mates listed tips named D6457, (even though the symptomology was not an exact match) and tests indicated that the tiny SMD device was shorted. A replacement diode was ordered and upon arrival, the SMD device was installed and power applied. To the surprise of all, the symptom remained the same - no change whatsoever. Further tests showed no obvious defective components, but it was decided to replace the transistors comprising the vertical amplifier. On this chassis, discrete transistors are used rather than a single IC and the supposition was that one may be leaky when under load, but still check good on the low voltage of the meter. 4 transistors, a combination of SMD and Through the Board transistors were transplanted with hopes for a full recovery. The Speaker June 2010

by Dr. Gregory House, Entered in the Medical Journal by Dr. Joe Sopko
As it turned out, this 'shotgun' approach was unsuccessful as well. The symptom remained the same after this transplant. Extreme measures were called for if this patient was to survive. Dr. Dick smith was paged, and upon his arrival he tested the electrolytic capacitor named in the Third Tip found Tech-Mate: C2465. At first, there was misleading information found in The Forces service data. If a Search for Component was made in Force, the program would display a 100pf cap in the Pincushion circuit. The actual capacitor stated in the Tip was a 10uf@100v electrolytic on the 12v line. It was fortunate that the sharp eyes of a surgeon spotted this discrepancy before an Iatrogenic error would have been made. [EDITORS NOTE: If you would like to investigate this schematic error, open Force model # 32PT5441/37 and component search for 2465 you will find the program leads you to the Wrong component in the Pincushion circuit. Then search for component 2470 which is in parallel with the Real 2465 capacitor in the Vertical Output Circuit. You will find that Force has two capacitors with the same location number] Upon application of the Dick Smith Meter to the correct C2465, a high ESR reading was measured. The 10uf@100v capacitor was replaced and This time, a normal picture appeared. POST OP: The attending physicians were surprised at the outcome of this case since the symptomology did not fit a capacitor-induced symptom. The Off-Center lines indicated a biasing problem, but that was proved to be false when all transistors were changed. It is unknown why the Horizontal was shrunken by this problem. We urge all practicioners to enter their tips into Tech-Mate for all to share. This ends the Grand Rounds for this session. See you next month.

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Half Pint

BY: Eli the Ice Man

Healthy, and Good For You! Thats true of a bottle of Bordens best Grade A Pasteurized Milk, and its true of Toshibas Half-Pint, the model 13AColor Television. The device had worked its little heart out ever since it rolled out the factory door in December of 2004 Until Now, when it decided that it didnt wish to participate anymore. It just sat in its place, Dark Quiet and uncommunicative. If you approached it, and pressed the Power button, the only response you would get would be the flickering of the Power LED an unrythmic pulsation definitely Not a blink code. There was no crackle of high voltage, no burst of sound, no Nothin only the red flashing eye next to the power button. Resistance tests were made of the Horizontal Output transistor, with the suspicion that it was loading down the SMPS. No Short, there. Scan Diodes were checked with the same result, as were the diodes in the secondary of the SMPS transformer. I think we can eliminate the suspicion of overloading.

A replacement 1uf@50v was soldered into place, and the power cord plugged in. Could it be This Easy? Well, the answer is Yes. The defective C516 cap was found with basic quick checks without a schematic and thats the way you have to do it with Small Stuff. If you have to spend a lot of time finding a schematic and getting bogged down with circuit theory, you wont make any money on this kind of job because the estimate will be declined. Even though Toshiba is one of the more enlightened companies that has made service data available on their website (via the link on the nesda national members page) and has provided discs of schematics during their yearly participation at the nesdaOHIO Weekend of Training, they still take time to find and open. This case worked out ideally with a quick fix and Two Happy People: The Owner, who got her Kitchen TV back the same day, and the Technician who got a Quick Fix.
Adjacent to a big block of ice in the back of the milk trick sits the Dick Smith ESR Meter. Along with resistance checks, ESR tests are next easiest things to do, so Mr Smith was pressed into service in checking the electrolytic caps in the SMPS circuit. All the large electrolytics near the SMPS transistor were checked, with none showing excessive ESR. Then, the search was expanded to check all 500 numbered caps farther afield from the transistor.
The search was (Ahem) Cold until the meter was applied to C516, a 1uf 50v cap next to (of all places) the Heatsink for the Vertical IC. The thing wasnt merely High ESR The Meter never even came off the peg (as if that could happen to a digital display). There was an empty display on the Smithy indicating an open cap.

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MY FAVORITE RECIPES

BY: Chef Timmy
Youll find below one of My Favorite Recipes and if you have one to contribute, you send it to ME: timexcel@msn.com and well show those women why the Best Chefs are MEN!

TODAYS RECIPE:

BREAD PUDDING (Yummy!)

Ingredients

2 cups granulated sugar 5 large beaten eggs 2 cups milk 2 teaspoons pure vanilla extract 3 cups cubed Italian bread, allow to stale overnight in a bowl 1 cup packed light brown sugar 1/4 cup (1/2 stick) butter, softened 1 cup chopped pecans

For the sauce:

1 cup granulated sugar 1/2 cup (1 stick) butter, melted 1 egg, beaten 2 teaspoons pure vanilla extract 1/4 cup brandy

Directions

Preheat the oven to 350 degrees F. Grease a 13 by 9 by 2-inch pan. Mix together granulated sugar, eggs, and milk in a bowl; add vanilla. Pour over cubed bread and let sit for 10 minutes. In another bowl, mix and crumble together brown sugar, butter, and pecans. Pour bread mixture into prepared pan. Sprinkle brown sugar mixture over the top and bake for 35 to 45 minutes, or until set. Remove from oven.

Mix together the granulated sugar, butter, egg, and vanilla in a saucepan over medium heat. Stir together until the sugar is melted. Add the brandy, stirring well. Pour over bread pudding. Serve warm or cold.

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POETRY CORNER

With apologies to Elizabeth Barret Browning, who wrote "How do I Love Thee / Let me count the Ways" and inspired this column I paraphrase that into "How have I been Faked Out - Let me count the ways". I never intended this column to become a regular feature, But I keep finding ways to get Faked out while repairing equipment. Learn from me in this edifying piece of open verse, so that oh dear - it doesn't happen to you. Today's poem involves a Kenwood Stereo model BB5 that was brought into my repair salon for a problem of Dead. After laying the Poor Dear out and placing some lovely white lilys around it, I then (This is my favorite part) Disrobed the subject and began my examination. What I found was that there were virtually No voltages being produced by that Nasty Power Supply Not that I knew where I could find them having No Schematic for this piece. I Googled the model number trying to find a service manual, but those Selfish people at Kenwood must have kept them All to Themselves! Without the manual, all I could do was Poke & Probe Poke & Probe trying to find the places where I might find voltages. (My, all that poking & probing was So exciting) I discovered some 3-Pin Regulators, and on only one of them could I find any voltage a 7805 that Did have 5v coming out of it. I found found Four Relays on the Main Board, but there were No musical castanet sounds coming from any of them. I looked at that Big Ol Power Transformer and found no less than Seven AGC type fuses on the underside of a Big Ol PCB thats mounted across the top of the Transformer Pins. They were hard to see, but My Skills in Looking up underneath things really helped me here. To my Distress, all those fuses were OK. Things were not looking good for Little ol Me. I thought I would have to sing a funeral dirge for this little feller. Well, after sitting myself down and having a stimulating drink of Chai Tea, I gathered myself together and posted a request for a schematic on that Lovely Nesda-Net. They are always so friendly over there. Within a Very Short Time my prayers were answered by That Nice nesdaOHIO member Charles Cartwright of Cartwright Television in Nassau, Bahamas.

By: Monsieur Josef

It was So nice to hear from him. We see Charles yearly at our NesdaOHIO Weekend of Training event, but it was nice to chat with him in the middle of an Ohio Winter (He was probably taking a break
from working on his Tan under the Bahamian My excitement Peaked when Sun).

Charles sent me a PDF of this BB5s circuits! I was Thrilled! Surely I would be able to trace those voltages Now! I Aroused my Adobe Acrobat and looked for the diagram of the Power Supply. and. Ohmigawd ! I exclaimed. Lookit that Power Supply (See Figure 2, bottom of page) ! Those lines go round & round like the inside of a Spaghetti Bowl. All this for a little ol Stereo? Oh, thats enough to bring on an attack of The Vapors. Lookit all those relay contacts, and all of those Bridges. Little ol me might lose my way in there! I had to sit down for a minute and think. and Think. As I was drying my tears I idly scrolled the PDF with my other hand on the mouse, and I came across the Service Adjustments page in that manual and a title caught my pretty blue eye. It said (.and I quote) INITIALIZATION. The Equipment is Initialized by plugging in the Power cord while holding the Memory and the Equalize keys. Ohmygoodness I said. Thats enough to bring Life to this Dear Soul. I Split my graceful slender fingers and depressed the keys while plugging in the power. Then I Pressed the Power Button and was rewarded by the throbbing rhythm of castanets as the Relays Clicked on. Oh! It makes me feel so Giddy! The Front Panel FIPs glowed with that Lovely Bluish glow that almost matches my lovely eyes. And it was All because of that Wonderful Charles. If he hadnt sent me that PDF, I would never have known how to Initialize the Syscon on this piece and make it Come Alive. It wasnt a Component Failure, after all. I will have to do Something Special for that nice man when he comes to Ohio this Autumn. (The 2010 nesdaOHIO Weekend
of Training is planned for Sept 16, 17, 18 Isnt that a Shameless Plug Tee Hee)
.Now, to answer the question posed in the First Stanza: How have I been Faked Out? "I've been Faked Out to the Depths of the Ocean, and to the Heights of the Sky".

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The Computer Illiterate

A Continuing Feature at "The Speaker", written by an acknowledged Computer Illiterate. The material contained here may be known to everybody in the civilized world - except the author - who says "It sounded good to Me, so I'll pass it on". The author advises that he has NO knowledge of computers, and as such cannot judge the accuracy or efficacy of the material presented herein. Nor does he assume any responsibility for damage to your computer, files or self esteem.

By: Joe Sopko Sopko

Quicktip From "The Computer Illiterate" If you're still using Windows XP like The Computer Illiterate (He'll probably be using it till the next millennium - It took him untill 2003 to replace his you probably have a balloon pop up every so often that says There are unused icons on your desktop - right? But what if I like my desktop the way it is and I don't want to be bothered with these messages anymore? The Computer Illiterate does NOT like "Change" - especially on his computer. It took him long enough to learn how to use it the way things are now! If You dont like that balloon, either, Well, Theres Good News Tonight Because You can turn That Balloon off!

Commodore 64)

(As Fred Allen would say!)

Here's how:

Right Click on a blank area of the desktop and choose Properties.
In the next window that comes up, click the Desktop tab at the top, and then the Customize Desktop button near the Bottom of the following window.
Under the General tab you'll see Desktop Cleanup towards the bottom of the window. Uncheck the Run Desktop Cleanup Wizard every 60 days selection and click OK.
Thats IT! No fuss, no Muss, and youve eliminated one source of frustration from your life. Now, If only I could do that with my Boss! Till Next Time, The Computer Illiterate Uncheck This

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LETTERSwe Get LETTERS
Yes, we do, and here at The Speaker we Love to hear from our Readers. Recently,
Tom Moore of Advance TV in Middletown, Ohio near Dayton - called to tell us about a particularly Troublesome problem that he solved on a Toshiba Television. He thought that this might keep some other Technicians out of a heap of trouble.
Oh, I thought that this Match was Won! I had the Corner Man hand me the Soldering Iron and opened up those connections and measured again right on the component leads. You can imagine the disappointment that was felt when the components proved that they were Not shorted. That means that the short was somewhere else in the set, but connected to these components. Well, I squinted real hard and followed the conductors of the printed circuit board this way and that until we wound up on the Other side of the Ring Err I mean PCB. Another Half-Nelson, and I had it in an Arm-Lock. Following a BodySlam, I put the meter on D603 a 15v Zener next to the Audio ICIC1001. This time, the short was still present on the component when it was disconnected from the circuit and the Fault was Identified. The Ref counted out One, Two, and Three while a new Zener was soldered in and the Match was Over. Score ONE for the American Technician over the Contender from Japan. Replacement of D603 resulted in restoration of all normal functions. And, by the way that title of Midget Wrestling?. Well, D603 was SHORT wasnt it?

Midget Wrestling BY: Tom Moore
As told to Speaker Staff Writer
Wrestling would be a good description of what was being done with this Television, The set came in with a symptom of Dead - No Click and for a long time, the Toshiba 27A43, a 2003 model, was Winning. The standard preliminary diagnostic checks were made: The Fuse was OK, the Horizontal Output Transistor was OK, Raw B+ was ok, and at that point we were wishing that we had a Schematic of this chassis - but we didnt. That means that we have to do it the Hard way by Wrestling with the Problem. After a series of Headlocks, Half-Nelsons, and an Airplane Spin I thought that I was onto something when I measured a Short across C542 and D512 near the Power Regulator Transformer.

www.pacparts.com

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Visit our Website www.nesda-ohio.com The Speaker
2051 Fentress Ct. Spring Hill, FL 34609
PH. 352-666-4773 E-Mail rpurkhis@tampabay.rr.com PRSRT STD U.S. POSTAGE PAID CLEVELAND, OH PERMIT NO. 944

Return Service Requested

NesdaOhio Monthly Meeting:
THIRD Tuesday of most months. Room 100 - Clarion Inn, 240 E. Hines Hill Rd. Hudson Oh. 44236 330-653-9191 On St. Rt. yards N. of Ohio Turnpike exit 180. 6:30 PM Correct answer for this months CET teaser.2

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