Question about RCA P52926 52" Rear Projection Television
Hello, Somehow while looking for resistor assortment kits I ended up at this site, and found other people having similar problems to mine. One day after a lightning storm the TV started to display a hourglass picture and the colors were severly out of convergence. While trying to adjust convergence through the menu the TV would shut off numerous times. Another dedicated person spent hours adjusting the convergence so that it was watchable but the screen is still hourglassed. We took it to a repairman turned police officer who fixes TV's in his spare time and said that the light box needed to be replaced and a whole cascade of stuff needed to be replaced as well but did not go into details. Upon first powering it up everything was fine for a few hours, and then the problem occured again. I was not in the room at the time so I am not sure how the transition from good to bad occured. So I am wondering what direction to go in now, the repair was around $300 initially and aside from throwing the TV out or giving it away I would like to try fix it. I am an electrical engineering student so I am familiar with circuits and such, but of course the education is focused on construction rather than repair. Would checking the solder joints on the convergence IC's, and checking resistors and capacitors for opens/shorts be a good first step? Should I just try to replace the convergence IC's and see what would happen, would it be worthwhile? Aside from that what would some other circuits in the TV that are suspect to failure of this sort be?
Look for connector J19105 which may not be seating properly. Unfortunatly by trying to adjust the convergence, you may have to go back and redo those adjustments if the connector is your original problem. Otherwise, using a good magnifier and checking over the connections around the convergence IC's and looking for burnt resistors might be a good second step.
Posted on Dec 20, 2006
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Posted on Jan 02, 2017
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