Question about RCA P52926 52" Rear Projection Television
RCA 92526 Rear projection 52"
The Colors on my TV went out today, they are all offset and overlapping, and the middle of the tv is bowing towards the middle, top and bottom... makes it compeletly unwatchable....
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 (hour
glass effect) by gently moving the heat sink (which the modules are
connected to). This gives the hour glass effect on the picture and the
advanced convergence screen. 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.
If this doesn't work, the modules need replacing.
Best of luck, hope ya fix it.
Posted on Feb 01, 2008
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