Re: Panasonic Z5 chassis tuner/if failure when warm (TC21S1R)
Source: http://sci.techarchive.net/Archive/sci.electronics.repair/200505/msg00783.html
From: "Art" <plotsligt@xxxxxxxxxxx> Date: Fri, 13 May 2005 16:32:Have you taken a good magnify glass and check the circuitry for poor quality solder connections, esp on some of the smd devices? Does mechanically flexing of the chassis contribute to the failure? Colin McCormick" <colin99@xxxxxxxxxxx> wrote in message news:4284fb04$0$93746$ed2619ec@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx > xnoarchive:yes > > This is a UK spec Panasonic TC21S1R (Z5 chassis). > It works for several hour before the picture shows > some disturbance, then breaks up into snow. After > this, no channels can be located using the search > tuning, implying that the frequency has not just > drifted off but there are no signals at all. AV > input remains working. > > The reason I'm having particular trouble with this > fault is that it will never show up when the set > back has been removed, even if heated with warm > air. At the moment I don't even know if the problem > is with the tuner or the IF strip. > > Any help most appreciated. Please copy me on colin99@xxxxxxxxxxx > > Regards, > > > Colin > > www.colin99.co.uk
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Re: Panasonic Z5 chassis tuner/if failure when warm (TC21S1R) From: Colin McCormick References: Panasonic Z5 chassis tuner/if failure when warm (TC21S1R) From: Colin McCormick Prev by Date: AN5551 pin out Next by Date: APC UPS Repair Previous by thread: Panasonic Z5 chassis tuner/if failure when warm (TC21S1R) Next by thread: Re: Panasonic Z5 chassis tuner/if failure when warm (TC21S1R) Index(es): Date Thread