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Need help repairing a Sony TV XBR65X900C that was hit by lightning. Has no video or audio

Have replaced main power supply and main video boards. With room dark there is light in the background of the screen. What boards should be replaced now? T-Con?

Posted by Anonymous on

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6 Suggested Answers

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Posted on Jan 02, 2017

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  • 1153 Answers

SOURCE: No audio, no video

Can you find out what Led is not on or which comes up and goes out? Most of these sets have convergence problems. Or Power Regulators.

Posted on Sep 23, 2007

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  • 1 Answer

SOURCE: I have a Samsung LNT4665FX with screen problems. I

To solve this type of problem, you need a piece of white chalk. Draw a line around the area where the set is at. Call a priest - and lay the poor thing to rest!!!! This isn't the first time Samsung has "dropped" junk onto its' customers. Their dvd players also had problems with their DSP I.C.s that would over heat and cause the video playbacks to "break up". Don't waste any more time or money on the product!!!!!

Posted on May 18, 2010

  • 8457 Answers

SOURCE: plasma 50 inches dont turn on

The power supply board is dead.Tries the websites like Shopjimmy.com,Ebay.com to buy the refurbish power supply board for the replacement.

Posted on Jun 22, 2010

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SOURCE: My VP504fhdtv10a vizio plasma TV when connect

Logic Control D Board got nothing to do with this problem. This is your main power supply gone bad(usually not the sub power supply). I just repaired my VIZIO by replacing main power supply. Just remove back cover and your board will be right in the middle of the screen. Just get board part/serial # and google it. My best price was through eBay(around $100). Everything is fine now.

Posted on Feb 07, 2011

SuperTech-11
  • 1591 Answers

SOURCE: I have a sony kdl-46s2000

If it's not the t-con board, There's a good chance you have failing electrolytic capacitors either in the power section or the inverter section or both - but in your case, most likely the power supply.
Any caps in these (or any) sections that look bulged at the top, or bulged/leaking at the bottom need to be replaced.
If you repeatedly turn it off and on, eventually it'll probably stay on, but every time you turn it off, the TV will get harder and harder to start up until one day it just won't.
Sometimes you have to do the opposite to start it up and unplug it for some time and then try again.

If you aren't tech savvy, don't worry, read the rest of this solution and watch the videos.

If you are handy with a soldering iron and can identify the power supply and inverter / FM section for the backlights, an inexpensive handful of capacitors will likely fix you right up.
Match the capacitance on the capacitors. Go over voltage if you can, and still have them fit.
IE - it's not a bad idea to replace a 10V cap with a 16V or 25V or even a 50V, but don't replace a 680uF cap with a 500uF or a 1000uF (unless you are positive it's only doing ripple filtering, and even then, you should go OVER, not under the uF rating).

Most of the caps that go are 10V 1000uF or 3300uF.

I found some great videos of the procedure (for many Samsungs with the same issue) on youtube.

http://www.youtube.com/watch?v=Mm51C_RDIZE
http://www.youtube.com/watch?v=BNHHrgX_6cs&feature=related
http://www.youtube.com/watch?v=8l0AUj8QUkg&NR=1&feature=fvwp
http://www.youtube.com/watch?v=Y7b_nTaZYcU&feature=related

As you can see, this issue spans plasma TVs, as well as large and small LCD TVs and monitors.
The parts are cheap, and skill required is minimal.

Posted on Jun 04, 2011

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Probable power supply fault now. Maybe if you replaced the power board it might work again.

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If your TV dead after the lightning, then your TV doesn't power ON with red light stays on lit you possibly have faulty main board.

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If the fuse still blown you need to replace the whole power supply board.

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Hi. The red line on ICS is quite normal it does not mean the part has failed. To be honest in most cases if a tv has been hit by strike it is a right off & scapped. What I suggest is to remove the main pcb & power supply pcb if its seperate & inspect the print side of pcb for signs of arcing tracking or burnt track. Repair any damaged track by cleaning off the coating to get at clean copper then solder wire accros to bridge the damage. Check the power supply resistors diodes transistors look carefully for any burnt components or components which are physicaly damaged. Check the line output transistor this will be near the large transformer with a thick red ht lead going up to the crt. Check all the components you can in the line stage look at all the ICS to ensure none of them have holes in them or have blown apart. Hopefully you find some or one if your very lucky that is damaged replace it & try your tv.

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