Question about Flat Panel Televisions

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Inverter Problem Looking for any words of wisdom... Have a Sony LCD HDTV only 2 1/2 yrs old- picture went out, red power light flashes continually. Called a Sony Authorized Repair Ctr. Tech said Inverter for LCD has gone bad, and that part is not available separately. Replacement on part alone quoted at $975, plus labor/tax, total over $1230 to fix. Frustrating, because this is my first investment in flat screen tv, and it had normal use- table top. No extended warranty and Sony not responsive. Is this a common problem? I can buy a new set for less than the quoted repair. Suggestions?

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I agree with the ASC. Many LCDs have the inverters as an integrated part of the display panel. SOME have the separate, but not many.

Posted on Jul 03, 2008

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Lg LCD tv less than 2 yrs old has sound but no picture. What could be the problem? power supply, main board, etc??


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.

May 18, 2016 | LG Flat Panel Televisions

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When I turn on the power the screen will light up briefly then go off, then the standby light goes on (red) and flashes in four times flash intervals


Hi,
4 blinks notifies the back light failure . could be the back light inverter board or faulty capacitor on power supply board.have added the image of back light inverter. Also added the picture of the power board. On the picture the capacitors marked with red should be replaced first. If shows the same complaint even after that then you have to change the back light inverter board.

Power supply

25849195-rpi3jfilu1hke134nfog5c4e-2-5.jpg

Back light inverter board
25849195-rpi3jfilu1hke134nfog5c4e-2-9.jpg www.electro-medical.blogspot.com

Sep 04, 2015 | Sony KDL46V2500 46 in. HDTV LCD Television

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Vizio P50HDTV10A 50 in. HDTV Plasma Television The picture started flashing in and out and then the picture went black. The power light is on, has sound no picture. only 2 yrs old


I repair a tv just like yours with same problem. I replace the x and y sustains boards. If you do replace them, please make sure it is disconnected from power outlet.

Aug 26, 2010 | Vizio P50HDTV10A 50 in. Plasma HDTV

2 Answers

My polaroid hdtv started smoking and then the picture went out. It will still turn on and has sound but no picture. There is also a flashing red light on the back. Can this be fixed and if so how?


Yes,This is not a power supply problems,u have power and sound,just no picture.Because the LCD inverter board help get picture is dead have burn parts in the board.Tries Websites Shopjimmy.com,Ebay.com to buy a LCD inverter board for the replacement.It a long board in shape.

Mar 25, 2010 | Polaroid FLM-3734B 37 in. LCD HDTV

1 Answer

Sony LCD 52 inch


This sound like you are having problems with the power supply board. Since you are getting a momentary picture and sound the fuses are good but TVs today have "shorts" and "overvoltage" circuitry build in that will shut it down on errors. Someone knowledgeable in electronics will have to isolate the exact cause.

Dec 05, 2008 | Samsung LN-S2641D 26 in. LCD HDTV

1 Answer

I have a Sony KDL-40V2500 LCD 1080P TV there is no picture the


A 4 flash shutdown indicates a backlight problem. It can be acused by a bad backlight inverter board (the backlight power supply) or by a defective backlight in the panel. There are fuses on the backlight inverter board called "picofuses" which will need to be checked in order to isolate the problem to the board or the panel. If the fuses are good, you have to replace the panel (very expensive!). If the fuses are opne, most likely the back light inverter board has failed.

Nov 25, 2008 | Sony BRAVIA KDL-40V2500 40 in. LCD HDTV

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Four blinking red lights.


you can have the inverter board replaced...instead of the entire panel.
KDL 40S2010: inverter part # 178950032, you will also need 2 spacers..part # 289765511
you're looking @ 200-300$ for the inverter and 5-10$ a piece for the spacers.

KDL-46V2500: inverter part # A1251295B
you're looking @ around 500-600 $ for the part

Aug 18, 2008 | Sony BRAVIA KDL-40S2000 40 in. LCD HDTV

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