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Samsung un55j620daf will not come on

Changed power supply and main board

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6 Suggested Answers

  • 2 Answers

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Posted on Jan 02, 2017

  • 51 Answers

SOURCE: Sanyo main board

Sanyo 1-800-877-5036

Or... for used parts.

Posted on Aug 06, 2008

  • 66 Answers

SOURCE: My Westinghouse LVM-37w1 monitor has a weak power supply.

You can request parts at this email address:
You can also call this particular contact number: 866-839-5888

Posted on Jul 29, 2009

  • 736 Answers

SOURCE: I have Samsung UN46B8000XFXZA LED TV. After power

Yes based on your testing it appears that the power supply is at fault solely and you can opt to attempt a repair or replace it altogether. Unfortunately you will not be certain that the main board does not also need to be replaced until you have repaired the power supply.

Posted on Feb 05, 2011

  • 1 Answer

SOURCE: Samsung power supply & IP board BN44-00264B &

For anyone else with this problem...I ended up getting a replacement transformer from ebay and swapping it out myself.

You have to remove the back panel of the TV, unplug the board from the harness going to it, unscrew the board (both via the set of screws going directly through the board and the set going through the plastic piece on the opposite side that, as far as I could tell, the board is glued to). This plastic piece (running the length of the board) has receptacles for the backlight bulbs, so be gentle getting it in and out. Don't forget the screw in the middle of the board.

De-soldering was a little tricky. My soldering skills are not great, so maybe it was me. But it certainly seemed to be a little challenging to get it all out. Having so many terminals probably didn't help (a capacitor would have been easier). Eventually though, I did get it out. Soldering in a new one was easy. Be sure to check continuity between the terminals of the new part and other parts of the board using the traces as a guide once you're done.

After that, simply re-install the board and put all hardware back in. Like I said before, be sure you re-engage the receptacles of all the backlight bulbs by pushing down at each notch on that plastic part of the board.

Hope this helps someone else...

Posted on Dec 19, 2011

SOURCE: will a power supply for a 50" plasma TV work with a 42" plasma TV?

sir it will work with your TV..

Posted on Mar 30, 2012

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1 Answer

I have a Samsung TV that will not turn on.


You have diagnosed the fault yourself. The main board of your TV is defective and needs to be replaced.

Good Luck.

Oct 02, 2017 | Samsung Televison & Video

1 Answer

Hi have Samsung tv(UN40H5203AFXZA) Version:TD01. It doesn't turn on just red light blinking, no sound/ pics.How can I know if it's main board or power supply board and what should I buy? Thank you

Hello Anas,
These failure could be a combination of the power supply and the main board failing.
I would suggest to replace both boards or if you are able to measure the voltages from the power supply and verify that the power supply is working, then you should only replace the main board.
Let me know if you require further assistance.
Search results for UN40H5203AFXZA

Jun 11, 2017 | Samsung Televison & Video

1 Answer

Have a samsung TV UN40H5203AFXZA will not turn on. When plugged in the stand-by light blinks seven times and goes off. Changed power,main and Tcon boards. 3 lights come on the Tcon board but go off.

Please un-plug the cable between the main board & the power supply, apply the AC power to it, if the back lights come on & still on, replace the main board; if the back lights did not come on, mostly the problem is defective back light LED strips.

May 08, 2017 | Samsung Televison & Video

1 Answer

My samsung UN60JU7100 Tv has sound but no picture. I tried to change the T-con board but nothing changed. Can you help me please?

Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Jan 30, 2017 | Samsung Televison & Video

1 Answer

My samsung tv turns on and off repeatedly on its own. I replaced the power supply board with no luck. What should I try next?

Hi Jonathan,
Turning on and turning off is the joint function of the power supply and the main board. You have changed the power supply, so the only thing left to replace is the main board.
Good luck.

May 03, 2016 | Samsung PN51D6500 3D Plasma TV

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

My samsung wont turn on already replace power supply cap

If it does not turn on despite power supply change, it has to be the main board responsible if you get power led on.

Dec 22, 2013 | Samsung Televison & Video

1 Answer

Samsung LN32A330J1DXZA will not power on. Problem occurred after moving TV from one house to another. Samsung Capacitor repair came out and pronounced it a dead main board and did not perform any...

reset the c.breaker or replace fuse in the main panel service from your home 2) test the power cord 3) test the switch 4) see if the fuse or c.breaker inside is tripper or replace fuse and try again.

God bless you

Nov 03, 2013 | Samsung BN41-00965A BN94-02070A...

1 Answer

I turn the power on and the light blinks thre times and thats it. Nothing else. The only thing was DTV was disconnected from it and then, nada.

There only two possible prob.First change the power supply board,dosen't work,must change the main backlight video board,with the old power board?Don't work,than must change both new power supply board and the main backlight video board.Sometime both boards is dead require both that why u must buy both for troubleshoot,have backup board and ready to trouble and repair right away.U can will able to return board the that purcharse for 5% or 10% restocking fee later.

Nov 02, 2009 | Samsung SPN4235 42 in. Plasma HDTV

1 Answer

Picture is not coming on samsung spn4235

Remove the Power Supply cable to Y Main board and check the Vs voltage in Power Supply board.
1. Vs voltage is OK, replace the Logic board or Y Main board.
2. Vs voltage is NG, replace the Power Supply board.

Dec 31, 2007 | Samsung SPN4235 42 in. Plasma HDTV

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