Question about RCA R52WH73 Projection Television

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Blowing fuse on convergence board

Hi:

I purchased a replacement power supply convergence board from you recently, and tried your suggestion of replacing the board. However, the fuse still blew out (after only a couple of hours this time)...

Anyway, I was wondering if:
1) you had any other suggestions on what to try...
2) is there a way for me to send back the power supply convergence board for a refund?

Thanks for any advice,

Don Nohavec

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In replacing the fl231. you need to resolder the connections on the flyback. see tips and tricks under my profile

Posted on Sep 27, 2008

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hi, there seems to be dead short somewhere i'd unplug all the leads from the power board and plug one in at time, then power up the set to see which board is blowing the power supply hope it helps

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The failure is not on the power supply but the convergence amplifiers STK ICs have the 24 volts shorted.
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no the board that has the FL231 on is the ITC222 deflection board. The other board is above the chassis in a seperate frame that runs across the set the convergence power supply is the board on the left above the board where the fL231 is. Yes the ITC222 and ITC222A are the same chassis. As for the service manual that site should have the service manual under the thomson category as the ITC 222 chassis is actually a thomson chassis made for RCA.

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You most likely need a new convergence power supply board if fl231 keeps blowing thats the most likely cause, also check for shorthed capacitor cp231. If you need a link to get a replacement convergence power supply board, let me know I know where you can get them.

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Hello rmolen,

This is an indication that the convergence amps are drawing too much current which has an effect on the power supply and thus killing your sound by removing or lowering the voltage supplied to that stage, finally this results in the blowing of the fuse. I would suggest that you change the convergence amplifiers and the biasing resistors (All of them) and then see if this corrects your problem (I believe it will). Also get a schematic of the TV and try to find out how the power supply relates the sound module and the convergence module, they might share a common power bus, or the voltage regulator for the sound also feeds the convergence board.

I hope this helps,

Thank you,

Shuttle83

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I recently purchased an RCA rear-projection TV from a friend, and I'm having some trouble with the convergence. It's model # P60925BL, serial #904251165. When I try to use it, the red and blue convergence...


since two colors are affected I would suggest checking the solder on the convergence power supply. If the solder is good you will most likely need a new power supply. The power supply board is the one without all the heatsinks next to the convergence board

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Where can you purchase parts for a hd52w59yx39????


go to this link and leave an email with your model number and what part youre needing they will be able to help you out.
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No leave the jumpers in and yes replace the chips as that's why the fuse blew so it would not take out the power supply when they shorted. I hope you did get the right IC's, the ones that say Sanyo on them. If you did not, these replacement IC's you purchased are the factory rejects and may work for a short time, but not for long. Also do not forget to apply an ample amount of heat sink compound on the backs of the new IC's before you install them. Good Luck

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This is a convergence problem. From your menu, go to Menu, Function, Convergence and then use you remote to try to adjust your colors. If you can not get them to line up this is a problem with the convergence board. The convergence amps (STK392-040 x 2)are internally shorted. These can be replaced or the whole convergence board can be replaced. It's cheaper to replace the amps, but more convienent to replace the board (especially for the less electronically inclined!! :) Hope this help you out....

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