Question about Sony Kdl55ex500 Model 55ex500 Kdl55ex500 55 Lcd TV

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No back light

Replaced t-con board and power board

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If there is no back light, the back-light inverter board is faulty. In most cased, this board is a built in one for most models of Sony LCD panels. Contact the authorized service centre for Sony in this case. Gopakumar Gopalan Google

Posted on Mar 21, 2014

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LG LCD Tv - No picture but have audio and new t-con board. What board to replace next?


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://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Apr 07, 2016 | LG Televison & Video

1 Answer

After a thunder storm i have sound, no picture, the tv powers up, the back lights are on, should i suspect a bad lcd screen?


Something else is going on. The T-Con board has no other function than controlling the picture. If there is a separate board for the led drivers, I'd suspect that one. The main board controls the sound.

Mar 11, 2016 | Samsung UN60D6000 60 Inch 1080p Smart TV...

1 Answer

TV has sound and will change channels but the picture is black.


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://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Mar 04, 2016 | Televison & Video

2 Answers

Philips 40pfl3705d/f7. Why is there no picture?


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://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced.

Feb 05, 2016 | Televison & Video

1 Answer

No picture but have sound


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://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced.

Dec 29, 2015 | LG Electronics 50LS4000 50" LED LCD TV,...

1 Answer

Jimmy shop.ccom has T-con board part #T500HVD0.0 500t10-C02 at the bottom in the description it list model PLDED5030A CRk my model is PLDED5066A-E since the parts # the same will it work in my tv?


If you see an image with a flashlight the T con board and power supply board are good. The back light controller board is the culprit.

Dec 18, 2015 | Televison & Video

1 Answer

I have a LG 50LN5600 LED Smart TV w/sound no/pic Have replaced the power supply board and t-con board. Main board only one left and research says that this would not be a main board prob. Any help?


If the LCD panel back light is not lit you have a bad LCD panel. If the back light stays lit when the set is turned on then you almost certainly have a bad main board since you have already replaced the power supply and T-con.

Aug 17, 2015 | LG Televison & Video

1 Answer

No Pitcher


its the t-con board if the backlight is coming on and there is sound then the t-con board is faulty. this is the board on the back of the screen has a cable going to it from the main av board. replace with same part number only. this has to match the screen.

Jul 15, 2017 | Sony BRAVIA® KDL46SL140/91 46 in. HDTV LCD...

1 Answer

I have a Proscan 47LC55S240V87 tv. Yesterday, I lost the picture. There's a faint glow from the screen and there is sound but nothing else. Being that I owned it for a year and two month, I opened...


hi,
You can suspect three things in you tv for this fault .. One is the Balck light inverter board And the disply driver ( T- con ) Board. You have mensioned that there is back light when the picture become blank. You have to check the same one more time and confirm that the back light is working perfectly. If you seems the backlight is ok then the problem is with t-con board or faulty electrolytic capacitors in the power supply board . you have to check for any faulty budged electrolytic capacitors in the inverter board and in the power supply board. IF found such capacitors replace the same will solve the problem. If there is no such capacitor found then you have to check the T-CON board.

T - con board is one which drives the pixels in the rows and colums of the LCD panel. You will find this T-con board in the bottom middil side of the TV. It will be coverd by a metal case or an aluminium ( to protect from inerfearence). There will be a connection from the mother board to this board And other two connectionsfrom this board will go to the LCD pannel. There is no repair possible with this T-con board. It should replaced as a moudule. Have added the picture of faulty budged electrolytic capacitors how its looks , inverter board and T-con board.



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Aug 15, 2011 | Proscan 47LC55S240V87 47 LCD TV

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