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THOMSON Bluray player not powering on

Not Powering up. No burnt up components on power supply. Fuse is not burnt in PSU board. No voltage output from SMPS board. SMPS PSU board model: SUNS JEP0800P-R0 VER1.0 94V-O Anyone can help getting me to right direction in fixing it or getting a brand new purchased for replacing it? I am not getting any help from GOOGLE

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Posted on Jan 02, 2017

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SOURCE: Power won't stay on

Your system has taken a hit of sorts from what you describe. The power supply needs to get a clean bill of health before you tackle the output devices. Let me know how things go up to that point...accordianman

Posted on Jun 10, 2008


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1 Answer

My lg blue ray player is powering up and all that isoniazid the screen is powering off

if you have basic knowledge in electronic repair then you can do a check in your player. first you will need to unplug the unit for safety. then unscrew to remove the cover now look for the power supply board which supply the main board and mechanism. try to find any unusual in the board like bulged component parts or any burnt parts, as will as in the main board. if none everything looks fine, at this time you will need a trouble shooting which need to used device like digital tester. you must check weather the supply dc voltages coming from the power supply board are stable if not it will not turn on properly.

Mar 02, 2014 | LG BD390 Blu-Ray Player

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When i switch on, it is always on standby mode, screen doesnst show picture

With the Samsung PPM42S3QX Power Supply Board is the likely the cause. Testing and diagnosing - Remove the back of the TV and check the voltages on the power supply. The output voltages will be labeled on the board. Look for obvious need for replacement such as swollen caps, bad fuse, burnt components.

Feb 17, 2012 | Samsung PPM42S3QX 42 in. HD-Ready LCD...

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I lost the power in my house and when the power came back on, the power on the Go video will not come back on. I can not find a reset button.

Sounds like the a general failure of the switchmode power supply in this unit. Easiest and quickest way to determine this is to visually inspect the supply board for obvious signs of trouble - check for any blown fuses, swollen/leaky capacitors or burnt components. It is probably something really simple like bad electrolytic caps. These are inexpensive to replace, but you should have ALL of them replaced at the same time, to minimise the risk of further failures later on. (note their working voltages and various values, and observe their polarity in relation to the board markings when replacing them) Electrolytic capacitors have a nasty habit of failing under unusual conditions by themselves, and the destruction they cause when they leak, could be extreme.

You may be lucky with the other components in the PSU, and these may be OK, but check the fuse and the caps first. See how you go. If this does not restore power to your unit, consider a workshop repair quote, but only as a last resort when all else fails, and you cannot go further yourself.

Apr 19, 2011 | GoVideo DVR4400 DVD Player/VCR

1 Answer

No power even if I plug my DVD to power source

Good day.

Follow this procedure for trouble shooting.

  1. Remove the cover of your DVD player.Loosening all screw.
  2. Check the input voltage of the power supply 220v/120v AC.If don't have input supply that comes from the ac cord,replace it.
  3. If you have a input voltage supply comes from the power cord.Check the output voltage of the power supply such as 5vdc and 12vdc.
  4. If the you don't have output voltage from the power supply.Check the fuse if busted,check open/change value of capacitor,check power transistor (regulator)if shorted and leak/bulging top capacitor of the power supply board.If you found any defective parts replace it.
  5. If you have output voltage comes from the power supply.The problem could be the main board,replace it.
  6. If you already done this procedure,test it by power ON the DVD player.

I hope this information will be helpful.Thank you and good luck.

Apr 17, 2011 | LG Televison & Video

1 Answer

I have philips MP3 player that isnt powering up


from my experience, I think your player is having a power problem. It must have received excess voltage/irregular power supply which has damaged an IC or capacitor on the power board of the player.

Sometimes this excess power supply might damage the player's main board. This is why it is advice able that you use step down for your player, because DVD player don't need excess power as something might be damaged.

To solve this problem, you will be needing a meter. Open the player, use the meter to read the components on the power board as it will help you discover the component that got damaged and you can then replace the bad component.

But if you do not have the knowledge of fixing this problem, you might be needing the help of a service technician.

Take care.

May 13, 2010 | Audio Players & Recorders

1 Answer

Possible burnt out power supply on Yamaha RX-V557

Can you check the power transformer, voltage & resistance.
You may have to unsolder some components to test them...such as the rectifying diodes and the transformer.  I believe that the outputs from the power supply board are all DC voltages.  Is there all so a IC chip on the power supply board?  Does your insurance cover lightening damage?   

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Computer will not boot

Option 1 :

Remove completely the mother board from Cabitnet.

Try to check it on other Cabinet.

Option 2

Remove mother board and re- plug the SMPS power Connecter to Mother board outside of cabit and make sure that motherboard is not touching directly to Metal part of cabinnet.

then switch on computer and check

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1 Answer

No power no picture no sound

You have a shorted power component. Probably either the voltage regulator or the Horiz. output transistor. Both will be mounted to a heat siink of some type. The Horiz. power circuits along with the flyback transformer power up 90% of most TV sets.


Feb 16, 2008 | Televison & Video

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