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What are the proper voltage outputs for each pin on both plugs of the power supply board, of a Samsung UN55H6203AFXZA . The power board is #BN44-00774A

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If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Circuit diagrams of many popular brand TVs and other devices are given.

Posted on May 19, 2017

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Posted on Jan 02, 2017

SOURCE: Lost ac power supply adaptor for Mli 190 speakers

http://an-labs.com/multi/sw190.html 12vac

Posted on Jan 22, 2007

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SOURCE: How to check the PSU for IP3000 printer

I've just checked mine as it suddenly stopped working - does not even light up the green button.

I'm getting 8 volts Red to Black and 23 volts Red to Yellow so I guess it's fubared?

Posted on Jan 28, 2008

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SOURCE: I have replaced the power supply on my Acer Aspire

When you have this problem on this PC, do not replace the power supply or the motherboard until you have first tried pulling out the video card. When the video card fails it can cause the x1700 to not power up. Pull the video card and see if it will power up without it.

Posted on May 19, 2010

  • 1 Answer

SOURCE: ILO LCD, Power supply issue, MLT169B. 24v output is dead.

I want to know R3 value

Posted on Dec 27, 2010

SOURCE: Vizio 42 in L42HDTV10A no power no lights no nothing

You can look at the various module failure symptoms and service / replacement options for the L42HDTV10A here:
http://www.coppelltvrepair.com/search?Q=l42hdtv10a&As=false&Pf=&Pt=&Sid=false&btnsearch=Search

Posted on Apr 25, 2013

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On Samsung TV model 851AX-YB03 does any boards need to be plugged in to the power supply boardBN44-00687A in order to output VA & VS voltages? Have tried plugging main board but still nothing.


Hi Jesse,
In order to get the voltages VA & VS, all the boards should plugged in,
Provide a bit more info about what is wrong with your TV and we might have a solution for you.

Feb 27, 2017 | Samsung Televison & Video

1 Answer

Samsung UN55B7000WF RED LIGHT FLASHES CLCIKING SOUND BACKLIGHT FLASHES


Hi Ab7775,

1. Pl check st by 5 or 3.5 volts.

2. If it is ok, check power on 5 or 3.5 volts. Is power on voltage stable ? If this is pulsating with cliking sound, it is the main board. Otherwise it should be the power supply.

3. Please also check all the other voltage for short with ground.

You can also check the power supply board separately. Remove the connector going to main board. Put a 1k res between st by and power on pin. Plug in the ac, if all the voltage appear, your power supply is ok.

I am on line if possible please do this checking and let me know the result.

Good luck.

Aug 09, 2016 | Samsung Televison & Video

1 Answer

Samsung plasma hp-r4272c, i dont have VS volt output on main power supply board


Just replace the main power supply board if there is no vs voltage output.

Sep 21, 2015 | Samsung HP-R4272 42 in. Plasma HDTV

1 Answer

Vizio logo does not light up amber when plugged in but turns white when power button is pressed. no picture or sound. Big Transformer on power board makes a light buz sound when plugged in also.


1. When the TV powered up, please measure the 24V, 12V & 5V are there, if one voltage is missing, you may have a defective power supply.

2. If the power supply lost the 24V source, you may unplug the power supply connector on both the inverter board, then power it up, if you got the 24V back, you do have a defective inverter board, you may unplug them one at a time to locate the bad one.

3. If the power supply & inverters are good, you may have a defective main board. The common problem on the main board is that a voltage regulator is bad, you may use your millimeter to measure them 1 x 1. The out put voltage (on the heat sync) should be 1.25V + the control voltage (Pin 1), for example: if the control pin voltage is 0, the output voltage should be 1.25V, if the control voltage is 2.05V, the output voltage should be 3.3V, if one of them is out of range, replace it, you may find the part from Digikey Co. The part number printed on the regulator is AMC1117.


Good luck!

Apr 08, 2015 | Vizio VX42L 42 in. LCD TV

1 Answer

How to test the 4 output powersupply on the un55b8500 led tv


First, inspect the electrolytic capacitors on the power supply board. The top of a burned-out capacitor is often domed instead of flat. You may measure proper voltage with no load, but the bad capacitor will not support a load. (Note: the voltages are usually printed on the board next to the output connector.) The page linked below includes a nice illustration of both good and bad capacitors. Also, check the LED driver board for the same problem. If you don't see anything like that, add a comment to the post to that effect, and we'll look at other possibilities.

CapacitorLCDPARTS net

Jun 12, 2017 | Samsung UN55B8500 TV

1 Answer

Red off on light blinking red TV will not turn on.


Good day.

Please check the power supply.
This the procedure:

  1. Open the cover,remove all screws at the back.
  2. Plug in the cord then power on the TV to perform voltage data/voltage check.
  3. Check the output voltage of power supply by using a voltmeter.5vdc,for system board 12vdc for sounds and 24vdc for inverter board/back-light.
  4. If the supply got voltage drop specially on 5vdc.Unplug your TV then check some leak/bulge on top capacitor and replace it.
  5. After you replace the capacitor.Plug-in the cord and power it ON again to test if it is OK.
I hope that procedure will fix your problem.Thank you and good luck.

Jun 13, 2011 | Samsung Televison & Video

1 Answer

My compter is dead, and I just want to verify if it is the power supply, motherboard, or power switch. I have a EG351P-V. If I completely remove it from the computer, plug it in, and turn on the switch on...


No, don't start shorting anything yet! Here's a picture of the power connector:

pgh_pa_guy_11.jpg

Turn on the power switch on the supply, then short the green PS_ON pin (pin 14 or 16 depending on the style plug your supply has) to the black ground pin on either side next to it. DO NOT short across the plug to pin 4.

If the supply is working, this will cause the fan to start up and you can measure output voltages as shown on the diagram. (In fact, this is how the motherboard turns the supply on. The supply provides a 5-volt standby output as long as it's plugged in and turned on to keep the motherboard running to detect the power button. When you press it, the motherboard provides the PS_ON ground to fire everything else up.)

Be aware that without the load provided by the motherboard and other parts of the system, you may be able to measure output voltages (especially if you're using a digital meter) that may not be sufficient to run the system under actual operating conditions. Bad capacitors can cause the voltage to drop when loaded, and this will cause the dead system or other strange troubles. The best way to determine if a power supply is causing problems is by substituting a know good one into the system.

Dec 19, 2010 | Enermax (EG351P-VD) (eg351pvd) 330-Watt...

2 Answers

No power


Sounds like you have a capacitor problem.You need to open the dvd player up and check all the capacitors located on the power board.Make sure it is unplugged and be careful.There will still be some charge inside the unit.

Aug 31, 2009 | Samsung DVD-V3500 DVD Player/VCR

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