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Bad powerboard board has 5volts and the power on 3.2volts no 12volts no 24volts

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What is the brand name and model number to your TV? Provide more details please. Normally, LCD TV power supplies are replaced as card basis. If you wish to get more details, check this site linked below. Pull up older posts there. Check the site with patience, as it has over 2350 posts now. All are related to electronic equipment repair help. If you search the site in Timeslide option, which can be selected from the drop down list at the top left of the display window, it will be easy to locate the related post. You can also do a search by type in the brand name to your device into its search box at the top right of display window.http://electronicshelponline.blogspot.com/

Posted on Apr 26, 2013

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Posted on Jan 02, 2017

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1 Answer

How to check a power supply


For this you could get a power supply tester from Amazon or Cyber Guys. It will check all the voltages required from each connector for it to be good. An alternative, if you are good with a multimeter, is to check basically for +-12Volts and +- 5volts on most of the connectors. You may need to download the schematic from the web.

Nov 11, 2013 | Gateway Computers & Internet

1 Answer

No picture or sound


check your 5volts, 9volts, and 12volts on your power supply..

Sep 09, 2013 | Sanyo Televison & Video

1 Answer

Power light is on but no picture


you did not mentioned if you have raster or none, if your tv has raster but no picture your problem is in your I.F. section and your tuner, now if no raster, you can check your power supply, check your 5volts, 9volts, and 12volts check any alternatives that cause of no picture..

Sep 09, 2013 | Toshiba 40RV525U 40 in. LCD TV

1 Answer

No power dvd player


if your DVD player have no power first step is find where is power supply section then check your output voltage buy using your multiple tester and range it to dc then check if have a supply 5volts and 12volts if no output you can check some diode to your power supply or you can buy a 1 set of new power supply its available to the market thank you

Mar 05, 2011 | Televison & Video

1 Answer

My dell5000 will not turn on and the power on light has turned orange , and weakly flickers.


I would say that the first thing to check is the power supply. Find a spare connector, Red is 5volts exactly! and yellow 12volts approx. Then disconnect the hard drive/s and RAM. Boot fom there and monitor what happens. It could have a faulty drive or RAM.

Hope a power supply will fix it and not a new motherboard!

Feb 22, 2011 | Dell Computers & Internet

1 Answer

Power button lights up but desktop will not boot. Appear to bad power supply


Change out power supply with a computer that has worked in the past and has a similar power, supply. Check power supply for 5volts,12volts we are black box specialist noone dors this any more change out power suppy and see if it works

Nov 24, 2010 | Gateway GT5404 PC Desktop

3 Answers

POWER UP AND IMMEDIATELY POWERS DOWN PC WORLD SUGGEST THIS IS A BLOWN MOTHERBOARD HOW MUCH IS A FIT MYSELF NEW MOTHERBOARD


This could be a power supply fault,check the volts on the red,yellow and earth lead(black)THE RED LEAD =5VOLTS
YELLOW LEAD=12VOLTS.WHITE=-5VOLTS
BLUE=-12VOLTS,PURPLE,=+3.3VOLTS
BROWN=+5VOLTS VSB
BLACK=GROUND.
Diconnect the pc mains plug from the computer.
Disconnect the power supply leads from the motherboard,and switch on and check the volts on all leads of all those I mentioned.If these are present when they are not connected to the main board,then the problem is with the motherborad,most likely the bios chip is faulty.This chip kicks starts the PC into coming on.Failing this send the PC back to where you bought it and let them fix it.
IT COULD ALSO BE THE MAIN ON OFF SWITCH AND THE CABLE ITSELF FAILING.CHECK THIS WITH AN OHM METER ON X1 OF THE RESISTANCE SCALE.DISCONNECT THE MAINS PLUG FIRST.

Aug 07, 2010 | HP Compaq Presario F500 F700 and G6000...

1 Answer

I NEED REPLACE COOLER FAN, MAINBOARD HAVE NO PLUG


Change the power connector on the cooler fan so it can plug into the 12volts on the 4 pin power connector, not the 5volts.

Aug 10, 2009 | Toshiba (P000377740) Motherboard

1 Answer

I would like to know how to troubleshoot a brand new Ultra LS600 power supply. I would like to go beyond hearing "it's dead" since I am getting power to the motherboard (via indicator light)m but the PSU...


You can start the PSU manually with a paper clip.
Remove the 20 pin connector from the motherboard, leave the four pin power connectors attached to your various drives (this will provide a load on the power supply when it start up (provided it is not faulty).
Look at the 20 pin connector with the connector facing you.and the locking clip to your left.
The fourth pin from the bottom LH corner should be a green colour wire and the next two wires (5th & 6th pin) should be black and next to the locking clip.
Straighten a paper clip and insert it into the 4th pin and into the 5th or 6th pin (ie connect these wires together). These wires connect to the front panel switch to turn on your computer. You are testing the power supply only and since it is not connected to the motherboard the computer won't start.
Now connect the power unit to the mains and switch on the mains, if the power supply is OK the PSU fan should spin up and your hard disk should also spin up. If nothing happens the the PSU is faulty.
You can test the +5volts and +12volts supply on a 4 pin power connector with a multimeter. The red wire is +5volts and the yellow wire is +12volts and the black wires are negative (ground). The voltage readings should be within 5% of these voltages.
There are other voltages to be checked +3volts, -5volts, & -12volts. but these are not as critical.

Dec 05, 2008 | Ultra Products Ultra LS600 Lifetime Series...

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