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I have a Westinghouse 27 in LCD tv that will come on sometimes, thengo black. Capacitors look fine on power board. Is it the power board, or is it the backlight inverter?

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  • Master
  • 734 Answers

Its the power on latch relay?

Posted on Feb 09, 2012

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Posted on Jan 02, 2017

rlamkin
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SOURCE: Replacing backlight inverter board

Not always but usually the inverter board is part of the display panel, way to much money to bother fixin.

Posted on Jul 03, 2008

  • 1 Answer

SOURCE: Sceptre X30SV LCD display goes black with sound... Inverter? and other parts...

I too have the same problem...Searched and waited long time for parts. I have replaced everything and the thing still flashes and goes blank but has sound. Not worth anymore stress. My neighbor is an electrical engineer who I used to think can fix anything. He too is baffled. My fix suggestion... Getting a new LCD (not a Sceptre) tonight...with an extended warranty...Sceptre (and their tech's) no help if you don't have a warranty. I learned my lesson!

Posted on Jul 09, 2008

  • 1 Answer

SOURCE: Either PSU or Darfon V144 inverter backlight problem?

Hi, Please measure all windings again and see if there is one lower than 900ohm. All CCFL might seem working but only for one second before the protection circuit cuts in. By the way, there is something that I would like to know, what is the type number of your remote control?

Posted on Dec 31, 2008

  • 66 Answers

SOURCE: Westinghouse LCD tv LTV-32W4 has great sound but no picture.

Your television actually has a backlight bulb which can be replaced at our parts request email and phone number. Email address: Parts@wde.com. (866) 839-5888

Posted on Jul 29, 2009

  • 1 Answer

SOURCE: part number for the samsung le52m87bd backlight inverter

Hey!

I also have a SAMSUNG LE52M87 LCD TV and I have the same
ANOYING BUZZ comming from ( I think ) backlight converter. - I am
almost 100% that its because of the backlight inverter while the sound shifts frequency when backlight is changed ( from 1 - 10 ), but the volume of the buzz stays the same. Only the tone changes. I have this TV for a year now and havent realy noticed until now, so I think it started buzzing recently, because I didnt hear it before ( and I got realy sensitive hearing :) ) ...

ITS DRIVING ME CRAZY ...

PLEASE post what happened when ( if ) you changed the inverter,
or what did you do to solve the problem ...

Many thanks in advance!

Eddie from Slovenia

my email: Ldesign.marketing@gmail.com


Posted on Jan 08, 2010

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Westinghouse LVM 37w1 Screen goes black, blue light stays on, sometimes turning the tv power off and on fixes it, sometimes just have to wait about 10 minutes and it works again. Could it be the...


Plasma and LCD TV sets are prone to having capacitors in the power supply section fail. This is the most likely cause for the probem you describe. When capacitors fail your will commonly see one or more of the following symptoms.
  • No video, Power light is on or blinking.
  • TV is making a clicking noise.
  • TV takes a while to come on
  • Screen is very dim or flickers.

Again, You can get a power supply repair kit with the parts, detailed instructions, and support from sites such as www.TvRepairKits.com . Or just click here to see more details on their kit.

Here are pictures of capacitors...Notice that the ones below look bloated. They have failed and will need to be repalced.



ecollier2012.jpg
Capacitor being replaced! Fairly easy DIY fix.

ecollier2012_0.jpg
Again, You can get a power supply repair kit with the parts, detailed instructions, and support from sites such as www.TvRepairKits.com . Or just click here to see more details on their kit.

May 01, 2011 | Westinghouse LVM-37w1 37 in. HD-Ready LCD...

1 Answer

Westinghouse tv goes to a black screen and no sound after about 1 hr. Power is still on


I had a similar problem with my Phillips 42 in. LCD HD TV.

Here's the problem. The Power Supply Board. I opened my TV up(warranty was up of course) and found several bad capacitors. Phillips and several other companies were sold capacitors that although were highly rated failed within 5 years because of a lack of preservatives. All sorts of electronic equipment is now being effected due to these defective capacitors.
Solutions?
1. Take it in and have it fixed
2. Open it up, check the board for faulty capacitors(bulged or leaking) Buy a new Power supply board and install it.
3. Remove PSB, remove faulty capacitors and replace with compatible new ones.

Hope this helps

Dec 09, 2010 | Westinghouse Electric SK-26H540S 26 in....

1 Answer

Installed new 27-D01567 power supply unit in my 19" monitor L1975nw. have green light but black screen. whats next?


Is the board brand new or used? You will need to verify the voltage (12~18vdc) feeding the inverter circuits, there is also a surface mounted fuse.
Try reading here:
http://www.instructables.com/id/How-to-repair-a-Westinghouse-L1975NW-19quot-LCD-/#step1

Basic LCD monitor troubleshooting guide:

http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

Failed TV, Monitors, capacitors, and lamps pictures: http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Please post back what you find.

Nov 05, 2010 | Westinghouse LCM-19v5 Monitor

1 Answer

Westinghouse ltv 32w The power shuts off by


I had a similar problem with my Phillips 42 in. LCD HD TV.

Here's the problem. The Power Supply Board. I opened my TV up(warranty was up of course) and found several bad capacitors. Phillips and several other companies were sold capacitors that although were highly rated failed within 5 years because of a lack of preservatives. All sorts of electronic equipment is now being effected due to these defective capacitors.
Solutions?
1. Take it in and have it fixed
2. Open it up, check the board for faulty capacitors(bulged or leaking) Buy a new Power supply board and install it.
3. Remove PSB, remove faulty capacitors and replace with compatible new ones.

Hope this helps

Feb 13, 2010 | Westinghouse LTV-32w4 32.02 in. LCD HDTV

1 Answer

THE SCREEN ON MY 27 INCH WSTINGHOUSE TURNS BLACKS


There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc. Look for 5vdc, 12vdc, and 24dvc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

Dec 17, 2009 | Westinghouse LTV-27W2 27 in. HD-Ready LCD...

1 Answer

I got a WESTINGHOUSE that powers on and has a great picture but goes black in about ten minutes still has sound!! i can hit the source button a few times then picture comes back on then same thing all over...


There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

Dec 13, 2009 | Westinghouse W32701 27 in. LCD HDTV

2 Answers

My LCD HDTV screen keeps going black.


There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

Nov 14, 2009 | Westinghouse 26" LCD Flat-Panel HDTV

2 Answers

TV just shuts off on it own... Have a westinghouse LTV-27-W2 TV purchased in 2005. It's been shutting off for no apparent reason... I wonder if it's going bad or is it the power cord.


Most likely, a number of capacitors need to be replaced in the power supply on this set, OR possibly, there is a bad connection on a connection on the snubber capacitor in the power supply, near the SMT transformer--and I have seen this MANY times on westinghouse LCD sets. .

Oct 09, 2009 | Westinghouse LTV-27W2 27 in. HD-Ready LCD...

1 Answer

Black screen - sound works


westinghouse_w32701_27_in_hdtv_lcd
power on no picture good sound and channel page up and down works
on background u can see dark picture

Aug 15, 2007 | Westinghouse W32701 27 in. LCD HDTV

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