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Rca big screen P61937

My t.v was working fine one day till it started curving to where you can't see the channels and some of the wording.. can someone please tell me what could be wrong with it?

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Hello crystallb200,

Your Convergence Amplifier ICs have malfunctioned, and have to be replaced.

Here is a brief description on how you can change these out yourself, however if you do not have a background in electronics I suggest that you have a qualified TV technician work on solving this for you.
Remove the back of the TV locate the Convergence ICs (using the schematic or service manual) and the order the parts you will need which are the two convergence ICs and the biasing resistors (you will see these on the schematic). To remove them unsolder the pins, unscrew the screws holding them on the heat sink and remove them carefully, if they stick use a solvent to break down the adhesion of the heat sink paste. Once loose, take them out and then unsolder the biasing resistors and replace them with the ones you ordered along with the ICs.

To install the new ICs put heat sink paste on the back of the ICs and insert the pins into the proper holes in the circuit board. Screw the screws back in securely, and solder the connections back.

After doing this you will need to perform a convergence adjustment, using the cross hair adjustment screen (access this from your TV menu). and the you will need to do an advance adjustment using the crosshatch pattern (also accessed from your TV menu).

Once these are done use you service manual to follow the procedures on locking the adjustments into the TVs memory.

I hope this helps,

Thank you,

Shuttle83

http://www.electron-age-technologies-llc.com

Posted on Apr 17, 2009

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