Question about Sony BRAVIA KDL-52S5100 52 in. LCD HDTV

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My tv don't have sound or a backlight, but has power. How do I fix it?

I replaced the G7N, but I still have the same issue.

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Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
In some models of LCD TVS; the backlight inverter and its T'Con board will be a part of the panel itself, and will be a built-in type inside the LCD panel. If so, they can't be replaced. In this case; a panel replacement is the only repair. For some other models, the backlight inverter section circuit will be a part of the main power supply regulator [SMPS]. To such sets, the power supply section circuit too should troubles shoot. Contact any service technician. The circuit will differ with models and versions.
Type in the brand name of your device, in the search box [at the top right] of the display window and the Search will start at once as you type in, and will show you all the related posts. It will make surf easy.

Posted on Apr 10, 2015

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JVC LT-42E910 LED flat screen TV, backlight comes on, menu box is displayed but after about 5 seconds backlight goes out. Picture and sound still working but no backlight. How can I troubleshoot?


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Jan 11, 2016 | JVC Televison & Video

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Vizio sound no picture


Its the inverter board which is preventing the backlights from coming on very common issue. You can get the replacement inverter from www.tvrepairworld.com

Oct 21, 2012 | Vizio 42 in. LCD TV

1 Answer

Green light turns but tv wont turn on


if you have sounds and backlight replace t-con board..if no backlight but have sounds inverter board..

if no sounds or backlight try this...




That problem is usually cause of faulty capacitors on the power supply board..

Just follow this instruction to fix your TV..

1. Open the back cover of your TV.
2. Look at the power supply board..Its normally connected to the power cord..
3. After that,,try to look at the actual image of capacitors if it is bulged on the top so that you can easily determine the bad capacitors..
4. After that,,try to replaced the bad capacitors using soldering iron and soldering lead..replaced the capacitors only with the same type ratings and value..
5. Some of the capacitors not bulged so its better if have a capacitance meter

Jun 25, 2012 | Vizio E420VA 42 in. LCD HDTV

1 Answer

If it takes my LCD Westinghouse TV 20 min. to warm up then the picture is fine, do I need to replace the backlight inverter?


Did you fix the tv Patty? I have the same tv and when i turn it on, it screeches really bad, but after about 20 minutes or so, all is well. I don't think its a main board issue, but i already ordered and replaced the backlight inverter - that didn't solve the problem. I read somewhere that the power supply is what the problem is, but i just don't want to start buying all of these components as my trial and error. I bought a new tv to replace this one but it is no where near my Westinghouse. I love this tv more than my 55" LED Samsung in the family room!

Jan 10, 2012 | Westinghouse LTV-32w4 32.02 in. LCD HDTV

1 Answer

I have a Vizio VF550XVT1A. The screen started to


Hi Alfred Grace,

First of all, thank you for posting your question here at Fixya.

Based on the symptoms you've described, I don't believe that the backlights are already faulty. If backlights gone to malfunction, that are permanent, but in your case you've said that the TV power up fine for half an hour, this is an indication that the fault not came from the backlights but from the inverter boards. Inverter boards are the one giving high voltage to the backlight to light up, it has a built in protection circuit that will activate once there's a malfunction on the board to avoid further damaged because of high voltage output.
If you would like to fix it yourself, I would advice you to replace both the slave and master inverter board. I saw your board at shopjimmy.com. Click it HERE for the replacement. Replacing these boards are not technical, all you have to do is to unplug the unit overnight to drain any voltages from the power supply board, disconnect all connectors and then put-in the new boards. No soldering required. If just in case that the inverter boards are not the issue (I'm pretty confident that the power supply board is working fine), don't worry, the link I've provided accepted return, the fault is on the power supply board.

Hope I helped you.
Have a nice day!
Good luck and take care!

Jdvillanueva

Dec 21, 2011 | Vizio VU42L 42 in. LCD TV

1 Answer

Hello my tv don"t have


You have a blacklight inverter issue...or the power (24v) going to the backlight inverter is faulty. You need to open the tv (if you are comfortable with that) and look for popped capacitors...these are usually on the power supply and need replacement for the proper 24v to the backlight inverter.

Mar 04, 2011 | Maxent MX-42HPM20 42 in. Plasma HDTV

1 Answer

Have sound but no picture


Hello,

If its not under warranty, pull the back cover and check the capacitors on the power supply. If there are any that are bulging or show signs of fluid leakage, replace them. If that doesn't fix your no picture but sound issue then you have a bigger problem. You can do it yourself pretty cheap and its not that hard. Just make sure you use the proper replacement capacitors.
But if otherwise
You most likely have a backlight issue with this TV set. Could be the inverter circuits for the backlights. The inverter is the power supply source for the backlights. there could also be a screen driver problem. This would entail changing the entire board.
Hope this help...

Jun 26, 2010 | SNK Magnavox 42MF231D 42 in. Plasma TV

2 Answers

I HAVE A DELL W3000 30 IN. TV. I HAVE SOUND BUT NO PICTURE. HOW DO I FIX IT?


This sound like a lamp issue when this type of thing happens there is always a lamp problem change your lamps that will be a 95% that will fix your issue

Jan 07, 2010 | Dell W3000 30 in. HD-Ready LCD Television

1 Answer

My tv shows a picture for about 10 minutes then no more picture but sound remains. what could the problem be? thanks


One of two problems:

1) You have a problem with your power board/inverter. This is most likely the result of busted or bad capacitors on the power board. If you know what you are doing, you can try opening up the TV and taking out the power board and replacing any bad capacitors using a soldering iron. If not, take it to someone you trust.

OR

2) Your LCD backlight panel is going bad. The backlight is the light that shines through the LCD to show your picture. This can be fixed by 1 of 3 ways, you replace the whole LCD panel and backlight (expensive), you can get your hands on a broken LCD of the same size with a working backlight and swap out the backlights (takes time and knowhow), or you can actually repair the backlights themselves (much harder and somewhat dangerous).

The fact that it happens consistently or after 10min implies that it might be an issue of the backlights overheating until they shut off or power board overheating to the point where it can no longer provide enough power for the backlight. Try keeping a fan on at the side or back of your TV and see if it makes a difference. It may or may not make a difference, regardless of the issue.

Aug 15, 2009 | Hitachi Televison & Video

1 Answer

32 LG LCD TV


Depending on your electronics skill, they can be replaced with new replacement boards. Usually the inverter boards that drive the backlights tend to blow. Soo its not really an expertise repair unless you know what your doing. The lcd tv's ive fixed the backlights are all on a 2 pin connector.

Oct 15, 2007 | LG RZ32LZ50 32 in. LCD Television

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