No Power The unit would not turn on. The repair shop said that the power supply is bad, and no replacements are available. This TV is just over a year old. I thought that parts were supposed to be available for at least two years after end of production. Unfortunately, this is not priced to be a throw away. Does anyone know where power supplies are available?

I had the same problem on my Westinghouse 32 inch TV. The internal main power supply went bad and had to be replaced. I had a TV repair shop do it. It was about 8 years ago. Haven't had a problem since. I think it cost about $70 for parts and labor. Nowadays TVs are pretty much a throw away item if they go bad. TV repair shops are getting hard to find plus the cost of TVs has come down so much sometimes you can get a new set for what the repair would cost!

That usually indicates that your power supply has gone bad. The clicking sound you hear is your power supply not getting enough current to turn on your screen. Could be a simple fix as a bad capacitor but not sure? If you can pin point that problem being your power supply, it is some times cheaper to just replace the power supply board but it depends how old your TV is and if the power supply unit is available.

That clicking sound you hear is your TV's power supply not getting enough current to turn on the screen. Could be as simple as a blown capacitor on the power supply board unit. Many TV repair shops just replace the whole unit, I am almost sure that is your problem with you TV as I've had the same problem with several TV's before. That clicking sound always points to a power supply gone bad.

Hello,

This is a common issue with this model. They used cheap components in the power supply board and these cheap capacitors fail and keep the unit from powering up. It is an easy repair to replace the bad capacitors with better quality parts and this should bring the unit back to life. Here is a repair guide for this model that shows what to look for and replace on the power supply board.

http://www.ccl-la.com/blog/index.php/repairing-a-polaroid-tla-01911c-with-a-bad-power-supply/

I hope this helps,
BuddyMc

Sorry... you likely have one of the power amp channels bad as well. One does NOT replace the power supply, instead repair it. You need a competent repair shop. I can tell you what parts are blown on the supply. They cost about $30 max for parts to repair the power supply. There usually is about $15 of parts blown on the amp that caused the problem and significant labor to repair the amp portion. If the smoke was dark or heavy, it was likely from the 0.03 ohm metering resistor on the bottom of the amp circuit board that caused the original problem. If one replaces the power supply and turns power on they will find one side of the amp doesn't work and MAY blow the power supply again immediately. I have repaired several of these units and have walked others through the repair sequence as well. You can contact me directly by email for more info if you need it. Unless you can find a competent repair shop that replaces components, including work on surface mounted boards, the cost of the module parts AND availability will preclude repair. The amp module is another $155 after the power supply is repaired if a channel is bad and one chooses to replace rather than repair.

Hi,

This is an indication of start-up problem in the power supply section. This is caused by leaky/dried electrolytic capacitor in that section. It will drop the supply from normal voltage and will disable the unit. It needs a little warm-up to make itself stable but the symptom will get worst. Sometimes it has a bulged/dome at the top but not all, it is better that you have a capacitor checker/tester to determine its condition. Your unit will back to normal again if the leaky capacitor is isolated. If capacitor checker is not available replaced all electrolytic cap in the output of the power supply. Involved working voltage is the 10v/25v/35v, if you found this in that area replaced it all.

Another option is to look for a shop that will repair the power supply board only since the affected parts is the cap only, no need to bring the entire unit, this will saved you some money...

If shop is not available and you can't troubleshoot the board click this link http://shop.ebay.com/i.html?_nkw=TH-42PZ80U&_sacat=0&_odkw=Proscan+19LA25q&_osacat=0&_trksid=p3286.c0.m270.l1313 for the replacement.

If you don't have necessary tools and test instruments, and can't do the job yourself, I would advice you to look for a professional to troubleshoot the problem. Don't attempt to work in the power supply if you don't know the safety precaution of handling it, there some stored electricity enough to hurt you with a little mistake only.

Also check if your unit is under warranty /extended warranty, avail it because the manufacturer of your unit will fix it for free. Don't open the back panel, this will void the warranty.

Hope I helped you.

Have a nice day!

Thanks for using Fixya.

Hi,
Question heading shows it is Sharp LC-37G4U tv and if power indicator dose not lit if tv plugged in that means power supply board got defective and need to be replaced.
Required power supply board is available with ShopJimmy.com for $79
Click above link to view power supply board image and price info.
If you are handy with electronics stuff repair then can replace power supply board by yourself OR call local tv repair shop to do this job.
Hope these info will help you.
Let me know if you have additional question.
Thanks

Could simply be your power supply. Please check that the power cord is connected to the computer and that the power supply switch (located in the back next to where the power cord plugs into the computer) is in the on position( I = on 0= off). IF the power cord is plugged into a working outlet and the power supply is on then it can only be one of two things. You have a bad power supply( easy fix that will only cost you about $50 or less) or your motherboard is bad. If you took this into a shop for repair they would pull out the power supply and replace it with a know working one. If that does not fix the problem then they would tell you your motherboard is bad. Power supplies are fairly easy to replace and, for your unit, very cheap, about $15 from newegg.

It's a power supply related problem. When it turns itself off, this it called protection mode. The TV automatically turns off to protect other parts form being damaged.
The most common problem is the Power Supply Unit or the Backlight Inverter Board.
You may have to take the TV to a repair shop to find out which one is bad. Paying a repair shop to replace the board for you maybe more than the TV is worth. If you let them diagnose it and you replace the bad circuit board yourself, it would be cheaper.

Here's a place I use to get parts for TVs:
http://www.shopjimmy.com/catalogsearch/result/index/?q=LC-26D43U&p=1
The problem is the repair shop may charge you double or three times of what the part costs at the web site link above. Then, plus labor. I just want to save you money. :)

Hello,

I have a pile of these in my shop. Unfortunately and usually, a backlight lamp is bad, and the inverter board is damaged when it goes out. The backlight lamps are sealed inside the panel, so the usual method of repair is to replace the panel.
If you turn the lights off in the room, then turn the tv on, you will probably see a momentary flash of light from the backlight trying to start up. The lamps can be replaced, but the option is not really cost effective given the amount of time it takes to replace them/very delicate nature of the lamps/availability of the lamps/cost of the lamps. Replacement panels might be available, but you'd have to use a TV shop for reference or call Sanyo directly.
These units also have a history of power supply heat damage, so if you don't see the momentary flash, it could be the power supply. But the momentary flash is the dead giveaway.

I hope this helps you...