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Re: RCA R52WH74 Circuit Board
When the menu keeps poping up it ussally the front panel cuircit board. This is the board that the front button are on. to remove the board you have to remove front bottom panel then remove the center panel. these panel are attached with about 4 torx screws on both sides the 4 torx on botom of center panel and two on each side..
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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. Best of
luck, hope ya fix it.
Thats the classic sign of a failed deflection board. You can get the ITC222A deflection board which comes with warranty and installation instructions from www.tvrepairworld.com its listed as the ITC222A remanufactured deflection board under the RCA CRT Projection Circuit Board catagory
That model is famous for having issues with the deflection board failing. Replacing the deflection board should solve the issue. You can get replacement deflection board for the ITC222A chassis from www.tvrepairworld.com under the RCA circuit boards catagory.
This rca chasis 222 set has the cpnvergence divided among 3 diffrent circuit boards. how often does it pop in and out? is this all of the colors or just one. is the picture curved in at top and bottom when this happens. intermitant problems are characteristic of a faulty connection or a componet aproaching failure. if the picture is curved in then i suspect it could be related to the convergence power board. if it just one color it might be the convergence amp board. i am here to help so just let me know and i will do my best to see what i can do
I replaced mine, it's called the Deflector board. Some people call it the flyback board after the flyback transformer that is located on it. I found one on Ebay for 25 bucks a while back, so good luck. Troll ebay or find someone that is giving their tv away on craigslist because the convergence or a bulb is bad. Don't base it just on your specific model of TV though because many of them share this common board.
Try part #271827. That was the part number of the board I won on Ebay.
very good troubeshooting.... it will be the keyboard. i have seen this in the shop alot. just fixed one about hour ago. the board rca 271867 try union electronics thats where i get most of my parts. this is a simple board replacement why pay 150 for something like this