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Bad main board on Samsung 46" LCD?

46" Samsung LCD main board. I suspect there to be an issue with my main board as the HDMI ports went first and now when I turn it on I hear the tv chime on and no picture. I unplug power supply connector to board and back light lights up.

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 52 Answers

SOURCE: TV does not turn on/red led flashes 7 times in front

this is common issue with this model and through your troubleshooting is tied to y main board. blinking led on logic main in normal operation. when replacing y main always good idea to replace y upper and lowe buffer boards as they complete a circuit and sometimes replacing one without other could cause additional failure on remaining boards

Posted on Aug 19, 2008

  • 191 Answers

SOURCE: VIZIO LCD 26 INCH model# VW26L HDTV10F NOT TURNING ON

unplug ur backlight inverter plug &power on to see ,if it doesnt on , change ur mainboard

Posted on Nov 10, 2008

tvservice306
  • 458 Answers

SOURCE: ln40a530 samsung lcd tv wont turn on

MAY BE PANEL LAMP BAD

Posted on Oct 21, 2009

BoiseLCD
  • 63 Answers

SOURCE: I have a NS-LCD37-09 tv. No picture or backlight

Your main board is faulty. I've done several of these but haven't been able to figure out which component is actually bad these yet. I've simply had to replace the board itself, and it fixes it every time. One thing you can do to get your backlights to come on (and so you know I'm not Jive'n you) Is unplug the three wire bundle that spans from power supply to main board. This will usually make the backlights fire up. I even had one that after I left it that way for a minute (with the backlight on) it suddenly started working again! But this was short lived. :-(
One time I even tried recapping the entire main to see it that would fix it. It did not. I think it might be something to do with the small chip labeled SL37HA37. It's a 16 legged bastard near the 3-wire plug I told you to pull. It's that or possibly the bigger IC near it that has a heat sink on it. The ball grid array solder joints may be faulty. Just guesses, if any smart guys out there figure this one out, be sure to tell the rest of us please!
Thanks, Chris Boise LCD www.boiselcd.com

Posted on Apr 23, 2010

  • 8457 Answers

SOURCE: Westinghouse 32 lcd tv - no picture no sound - set

Reset the tv and the cable or satalite boxes,replug it back an hour later let the tv reset it self back to factory setting and the boxes upgrade it software.The tv should work now.Not,than yes.It the Tuner main board.

Posted on Sep 17, 2010

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1 Answer

Bad hdmi ports on my Samsung LN46B750


Hello,
This repair can be DIY by replacing the main board. All the HDMIs are located in there.
If you can find the part that controls the HDMI signals and replace it, it might be a cheaper solution, The IC location is IC1401.
Let me know if you required further assistance.

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2 Answers

HDMI PORTS DONT WORK


Hello,

You will need to replace the main video logic board, its part number is either EBU60852909 or EBU60852911. These two board are direct replacement parts. There are several boards available on Ebay such as this one: http://www.ebay.com/itm/LG-46LD550-UB-Main-BPR-Total-Assembly-EBU60852909-subs-to-EBU60852911-/150895037335?pt=US_TV_Boards_Parts_Components&hash=item23220b8b97

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1 Answer

46" Samsung LNT4661FX /XAA LCD TV volume problem.


If sound on one HDMI and not the others---all three should go to the same board--either something is not connected inside or the replacement board is the issue---Samsung is known for making boards with the same part number on them that from week to week have different features or do not have certain features.

Try to trace where the working input goes and if to same board as other two you know what to suspect.

Jun 15, 2012 | Samsung Televison & Video

1 Answer

HI I have a Samsung LN-T4661F LCD TV, the problem is that when i power it on the picture is displayed but with distorted colours. I can see the images but it is all like negative and blurry. sound works...


Is it like this?:
http://i691.photobucket.com/albums/vv275/oldskewel/samsung_LNT4661F

I think I have the same problem on my LNT4661F. I happen to also have a 4061F and just temporarily swapped main boards, which confirmed that it is NOT the main board which is bad. Swapped LVDS cables to confirm that's OK too. If you replaced the T-con board, then that leaves the power board or the panel. Did you make any progress on this?

All the caps on the power board look good, but I hear a whistling noise from one of the power transistors.

Sep 05, 2011 | Samsung LN-T4661F 46 in. LCD HDTV

1 Answer

Both HDMI ports are bad due to lightening strikes. What do I need to do to fix this? Can you suggest part numbers?


The main tv Tuner signal board have problems and all those HDMI insert ports are shorted dead,those HDMI insert ports are put on by wave soldering machine and fused by iron core solders joints to the main tv Tuner board itself.These HDMI insert ports are not replaceable by hand soldering equipments or can buy those HDMI insert ports individually anyway.Tv still work wright?Yes? Why don't u just skips the used of those HDMI insert ports all together and tries used those RCA component cable connections like AV1 and AV2 on the tv.Or u must have some mechanicals skills and like take things aparts and putting back together again?Yes?Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish tv main Tuner signal board for the replacement to able to used those HDMI insert ports again.I have the same problems with my Samasung 46" all my HDMI insert ports are dead too,but the tv still functions.That what i did used RCA cable components connections for my cable box and blu Ray player.

Aug 03, 2011 | Sceptre X42BV 42 in. LCD TV

1 Answer

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you would have to get a exchange module that has the av ports as well as hdmi jacks you can either order a service manuel to obtain the part numbers or call sony have your model and serial at hand when you call


Oct 24, 2009 | Sony BRAVIA KDL-46S2000 46 in. LCD HDTV

3 Answers

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Had the problem. Turned out to be a defective hdmi port circuit board.

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1 Answer

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Most likely a defective Main Board. I suggest calling Sharp 1-800-237-4277 to locate your local Sharp Authorized Service Center.

Nov 06, 2007 | Sharp Aquos LC-46D62U 46 in. LCD HDTV

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