Question about Samsung PCL545R 54" Rear Projection Television

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Green convergence was bad now tv wont turn on!

Green started showing up in pictures. Now the tv wont turn on at all. Is this a convergence module problem or something bigger? If so where is the convergence module located exactly and should i replace it or just the ics on the module? I am trying to determine wether or not to keep the tv. just need to know if it is worth fixing, its a good tv when it works in really good shape.

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The convergenc module is located abouve the board on the right side of the set looking in the back. Its attached to the metal frame you will notice two large STK392-040 ICs mounted to a heat sink. You can get new ICs or a replacement board at the following link for your model. leave an email if you want the convergence board and they will get back to you quickly. Heres the link.
http://servicemanuals.vstore.ca/

Posted on May 31, 2008

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brent hardin,

Your description of the problem sounds like a convergence issue. You more than likely have lost the convergence ICs. They will need to be replaced and the convergence will have to be set. The green beam should not move. It is the standard which the red and green are moved to overlap. Since you have bow at the top and bottom I would replace the convergence ICs. I have a tip at http://www.fixya.com/support/r4220499-change_projection_tv_convergence_ics which explains the problem, how to replace the parts and where to get the replacement parts.

Thanks for using FixYa and for the great rating. Great ratings will keep the experts helping to solve problems. Thank you.

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Oct 26, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

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My RCA projection TV - the picture only shows red green and yellow and the picture is distorted almost concaved. It overlaps and nothing is clear. All 3 bulbs seem to be working. No idea what is wrong.


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PICTURE


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Jul 02, 2008 | RCA R52WH73 Projection Television

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Bad convergence, now wont turn on at all.


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http://servicemanuals.vstore.ca/

Jun 30, 2008 | Mitsubishi WS-55311 55" Rear Projection...

1 Answer

Pt5598 rplaced convergence board no luck.


If the picture is still bowed, the power supply fuses are open.
Check the power supply on the red connector for + and - 20 volts.

The fuses are on the main board,are on the deflection module in the middle, tward the front of the TV. They should look like green (or brown) resistors. An ohmmeter check will show which ones are bad.
They should be 3.5 amps. Replace with 4 ohm GMA fuses with pigtails if you can't find picofuses. I also had a set that would fry the 1 ohm resistor on the 20 v supply. This was near the fuses.
I replaced the whole module to fix that.

I hope this helps. Lee, www.crazycomputers.com



May 31, 2008 | Akai PT5598HD 55" Rear Projection...

2 Answers

Does not turn on


you probably had a bad solder connection on one of the convergence modules, it's a common problem with projo tv's. that loose connection finally got bad enough to cause a short in the module, and that's what is sending the power supply into shutdown. have it fixed, and have them replace all of the convergence modules, not just the bad one. if one went out, the other(s) (there are 2, sometimes 3 of them) are the same age, and likely will also fail soon. ...... gee i was looking for a picture of one of those modules, but can't find one. well, anyway the modules are on large pieces of finned aluminum (heat sinks), and are about 3-4 inches wide, 2 inches tall, 1/2 inch thick, are usually black plastic, and have about 20 wire leads coming out of the bottom going down to the circuit board.

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