Question about Panasonic PT-53WX54 53" Rear Projection HDTV
You need to re-solder the circuit board that contains the STK
convergence modules. They're on the center circuit board attached to an
aluminum heat sink that's about 8" long and 6" tall, about dead center
in the circuit board. You may be able to recreate the problem by gently
moving the heat sink (which the modules are connected to). This
is an indication that the modules pins aren't solidly connected
(meaning soldered) properly. Remove the circuit board and clean the old
solder off & resolder the modules pins to the circuit board
reconnected the board and then retest by again pushing on the heat
sink. This is a caused by a minimum effort (a.k.a. minimum cost)
solder job, probably done in some 3rd world sweat shop. The "factory"
job was good enough for 3-4 years but the heat (and these modules do
create a lot of heat) and stress created from repeated use eventually
takes it's toll, weakens the pin connections and our problem occurs.
take the appropriate cautions working around the high voltage of the
set & use a non-conduting piece of wood to push the heat sink when
we doing tests.
Best of luck, hope ya fix it.
Posted on Jan 18, 2008
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