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Screen will not turn on. may have had power surge in house. Suspect power supply burned out.

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I replaced the power board with one from shop jimmy but still get no power/stand-by light at all. i can heard a very quiet rhythmic clicking from what sound like the power board.


The power surge may have affected components other than those on the power board. Check for burned components and signs of scorching or breakage.

Mar 22, 2016 | Samsung PN51E450A1FXZA 51-INCH 720P SLIM...

2 Answers

Today my power went out for a split second and came back on I turn my TV back on it makes a high pitched whining noise and the screen wont turn on. Cant add picture but model number is MW30G71.


unplug your tv. let it sit for a good bit. 1/2 hour did your power just go out or did you have a power surge then no power. surges cause the grid to go down for a second too and that causes problems too. surge protectors are good for everything. also are you on cable? if so have the cable company check they're filters into the house may be an issue but check the tv after a half hour unplgged and then plug in and turn on normally? sometimes it needs a reset time period before the fuses inside will reset themselves.

Nov 17, 2015 | Televison & Video

1 Answer

T5020 emachine seems to have dead power supply- how can I confirm?


If the PSU fans only work for a short time usually this means that the PSU is shot

If you suspect your power supply has gone bad, there are a few basic things you can do to test it. First, plug the computer in and try to start up the computer. If the computer can start up or shows signs of having power (the hard drives spin up, or the fans turn on) the power supply might be fine, and you may have an issue with your motherboard or RAM. If the computer won't start at all, open the case and then turn the power supply on and attempt to start the computer. Observe the motherboard to see if any lights turn. If no lights turn on and there is no sign that power is being supplied to any of your devices, there's a decent chance that the power supply has burned out. If your computer experiences periodic crashing, feel the case near the power supply to see if it is hotter than normal, and smell the air. If the case is much hotter than normal or you smell burning, your power supply might be overheating, and may be damaged. http://pcsupport.about.com/od/toolsofthetrade/f/powersupplytest.htm hope this helps

Jan 01, 2013 | eMachines T5020 512MB DDR PC-3200 Desktop...

1 Answer

We just had a lightning storm come through which knocked out the power. Once the power came on we tried turning on our sanyo LCD 24k40 tv it wouldn't come on. How do we fix it


I've checked on line for a schematic of this TV but was unsuccessful but I suspect it is one of two problems.
1) A fuse inside the TV was blown from a power surge caused by the storm. If you can locate it pull it out and look to see if it looks blackened (even a little) or if the wire inside is broken. This would indicate the fuse did it's job and stopped the power from burning out the whole TV. All of these fuses are available at your local electronics store or Radio Shack if you have one nearby.
2) The power supply on the TV was hit by the surge and burned out. There is no simple solution to this problem as the power supply would need to be replaced and the only way to do this is to hire a qualified TV repair service. If you happen to be good at soldering and understand electronics you could do this yourself after buying the power supply on line. I checked online and the part is about $60-70 USD.
There is a possibility that the power surge could have fried one of the circuit boards and if that's the case then you would have to weigh how much you want to pay to repair the unit after having a repair service estimate the work. I feel pretty strongly that you have one of the other two issues I listed since you didn't mention any other items in your home that were damaged at the same time. If there were more items then I would suspect the power surge would have been much more massive and likely caused considerable damage but since not then the damage would be minor leading to my previous conclusion.

May 23, 2011 | Sanyo DP46848 LCD TV

1 Answer

My power went out in my house and when the power was restored my computer would not turn on...there is a blue flashing light in the back of the computer.


The blue flashing light is probably on your power supply. I suspect that the power supply was subjected to a voltage surge during your power outage. It may have damaged your power supply (or possibly other components in your computer)

Try unplugging the power supply from the wall socket and leave it unplugged for at least 5 minutes. Then plug it in and see if your computer will turn on. If it will not, you require the assistance of a PC technician to test your power supply and computer.

You should connect a surge protector or UPS (Uninteruptable Power Supply) to your computer to prevent this from happening again.

If you have any additional questions contact me by clicking on the "Add a comment" link located under your problem description on FixYa. Also, if you believe that this information was helpful to you, please return to the FixYa website and rate my response to your question.
Best regards,
Yavacotech

Dec 31, 2010 | HP Computers & Internet

1 Answer

I have a Power Supply OKIA 550W black, and i whant to know what kind of sensor thermisor I have to use for reparation. Because it burned and I cant read it.


If burned out, it is most likely a MOV surge supressor. Since most PC power supplies are 120/240 vac rated, a MOV of 275 volts or greater would work. The exact values are not critical, as it is for line surge supression.

Jun 13, 2010 | Okia (OKIA550WP4PS) Power Supply

1 Answer

TURNS ON AND OFF IMMEDIATELY . HEARD POPPING AND SMELLED ELECTRICAL BURN BEFORE 1ST TIME


More than likely a burned power supply. The acrid smell is a giveaway for high powered components failing. If it were a conventional CRT type screen, I would suspect the flyback transformer, but LED/LCD type screens will eat a power supply if it has the slightest defect in manufacturing.

Jan 26, 2010 | Sanyo DS32920 32" TV

2 Answers

Computer won't turn on won't do anything , i had it connected and someone at my house was using electric drills and the fuse tripped and everything was shut down including my computer and since then it...


Try unplugging the computer completely from the wall for 15 minutes. Plug it back in, and see if it will power on.

If it doesn't it's most likely a blown power supply, when the breaker tripped, everything on the circuit basically fed back into everything plugged in. This is something most computer power supplies do NOT like.
The good news is, a power supply is generally pretty cheap, you can get new power supplies atarting around 20 bucks, although decent quality ones are closer to 50 bucks. Bad news is, there is about a 1 in 20 chance the power supply took other parts with it.
Once you do get it running, or get another computer, make sure to get a surge protector strip and plug everything connected to the computer into the surge protector. A 15 dollar surge protector can save you 150 dollars in parts and labor. (or more)

Sep 27, 2009 | Computers & Internet

1 Answer

Zenith R56W36


your main power supply has been burned out. make sure all electronic are protected by a surge protector in the furture

May 02, 2009 | Zenith R56W36 56" Rear Projection...

1 Answer

Sony Projection TV 60 XBR, wont turn on, blinking green light


This sounds like when the power came back on a surge went into your tv and burnt out the TVs main power supply or possibly burn out the flyback power converter on the TV main board!
(I am pretty sure it is either one of these things!)
Please rate answer
THANK YOU!

Jan 15, 2009 | Televison & Video

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