Question about Haier HL37 37 in. LCD Television

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Power transformer I need a price on a part for a RCA HDTV 52" # B52 W19. My power transformer fried and I need to replace it. The part # is Orega 40351A-1 10799630

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Re: Power transformer


Posted on Sep 30, 2008

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Re: Power transformer

How do I know if the transformer went on my tv I saw a rd light & then it smelled like wire burning & the tv shut off & won't go back on. Haier 40 inch hd

Posted on Sep 11, 2008

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My RCA 50'LCD HDTV screen crack,I'm looking for a new sreen.

It is not worth getting a new one, ewith the 4K UHD TV you are able to get 60 inch for less that the price of the screen with warantee

Sep 28, 2014 | RCA Flat Panel Televisions

1 Answer

RCA TV will turn off by iteself and come back on by itself like every few minutes.

That's a clear indication that you have a bad power supply in your TV.
If you know how to DiY...I suggest you open your TV. Locate the power supply section, it is where the end of the power plug is connected. Replace all blown or bulge or leaked capacitors with same value. That will fix your TV problem.
The hardest part is to disassembling your TV cover, cause you will need to pry off the snap in lock at the edge of your TV.

Power supply board should look like this. Examine the capacitors in the board

After replacing blown should work again.

Things you will need.
1. A plastic flat end screw or any object with flat fry off the cover
2. Soldering iron.
3. Soldering lead
4. Soldering pump.
5. Flat and Philip Screw
6. Replacement capacitors (of same value with the blown one) that you can buy to any electronics store.

Hope it helps

Mar 06, 2012 | RCA L37WD12 37 in. LCD HDTV

1 Answer

RCA L42FHD37 42 in. HDTV LCD TV does not turn on at all


The issue you describe is consistent with a power supply board issue. This is the board where the AC goes to. This problem may have occurred as a result of irregular power supply, or excess power supply or power surge.

The TV is receiving current but cannot circulate or transfer the current to other necessary part of the TV because of the defective power supply board. You might be lucky it's just a blow fuse. Also a defective transformer can cause your TV not to power on.

All these can be checked on the power supply board.

But more often bad capacitors causes problem on the power supply board. I do not think the power board needs replacement, rather those defective capacitors is causing this issue. Open unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others.

The value of these capacitors will be different, most likely they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)

You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.

What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).

You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like ""(look for electrolytic capacitors). After replacing these capacitor(capacitors) most likely the normal operation will be restored. Or you can by a refurbished complete power board to save you some stress from

Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.

If you don't know about TV repairers, take the TV to the nearest repairman to fix the fault for you. Also, note that TV stores a lot of current, so wait a while before opening the TV back cover.

I hope this helps.


Sep 28, 2011 | RCA L42FHD37 42 in. LCD HDTV

1 Answer

Mitsubishi lt 52149 52 hdtv will not come on. Like no power. Smell burnt smell at top. Is this something I can possibly repair myself if handy?

No,tv do not any indication of any LED lights that light up at all or any blinking LED lights at all wright?Yes?This tv have major components parts on in one board or could be any boards parts are completely fries and could spread all over the tv other boards too.That why u able to smell burn smell,minor problems don't have a deep smells like that.Best get a quotes from tv Techs from many tvs shops best prices u decide and get it fixed by a tv tech certified professinal.

Aug 22, 2011 | Mitsubishi LT-52149 52 in. LCD HDTV

1 Answer

The unit now has a very low but noticeable humming noise when it is turned on... and does not go away. Its almost like a bad or obstructed fan? - christopher buchanan

This is a LCD tv,it dosen't have a fan inside this tv.The humming sound u hearing it is comming from the tv power supply board itself.Some how those high voltage transformers,in the power supply board are having gapping voltages tranmitting,when power up those transformers are going in and out of it highvoltage coils.Tries websites like, to buy a refurbish power supply board for the replacement.

Mar 02, 2011 | Samsung LN52A850 52 in. LCD HDTV

4 Answers

My samsung t.v. 52 inches will not come on it

My tv is brand new samsung 32 inches lcd. I accidently press power button several times and now i dont see any red dot. when I use my remote control, i see red dot but thats all

Jun 19, 2010 | Samsung LN52A850 52 in. LCD HDTV

1 Answer

My tv will not turn on

buzzing is a symptom of the power transformer going out. if not repaired it will smoke then at times catch fire. have fixed/replace the transformer.

May 29, 2010 | Sony BRAVIA KDL-52W4100 52 in. LCD HDTV

1 Answer

Sony Powersupply G1 Complete

Check the transformers,and the capacitors.Zoom in the website picture of the board u going to buy,and ur power board.If these commponnents are the same vale's the board should have the same functions.

Apr 26, 2010 | Sony BRAVIA KDL-52W4100 52 in. LCD HDTV

1 Answer

My hdtv picture is shrinking

flyback transformer or the equivalent IC needs to be changed ( some brands use and IC rather than a transformer)

Sep 22, 2009 | Flat Panel Televisions

2 Answers

It being emerson 32" hdtv lcd turns on but immediately turns off

This is Emerson's #1 problem.
The Inverter Transformer on the power supply/backlight inverter board goes bad. It's what powers up the screen for your TV. When the part goes bad, it doesn't have enough juice to power the screen and the TV automatically turns off. You have 5 Inverter Transformer on your board.
You can fix the problem by replacing the whole board or replace the bad Inverter Transformer.
Here's where you can get a new board for a good price:

Or, here's where you can get replacement Inverter Transformers:

Jun 17, 2009 | Emerson LC320EM9 32 in. LCD HDTV

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