Have TV Questions? Ask a TV Technician
Hello, Sorry you're having problems. Even the smallest detail in the symptoms changes the diagnosis so we do not generally eve refer to another question. I'd rather address your problem as an independent one to get you an accurate answer.
Now, regarding the power light- does it only flash ON and then OFF after you press the power button?
Also, are you saying you have the back of the set removed right now and are referring to disconnecting the ribbons from the Mainboard causes the screen to light up?
Please review my reply and postback to proceed.
Yes that is the Mainboard. WRT to the power light, what I asked was if it blinked ONLY after you press the power button, while you held the power button- WHEN does it blink please?
Perfect. And just to make sure- NO backlight from the screen wen you press the power button. That ONLY occurs when you disconnect the ribbon cable, correct?
Okay thanks. What you have here is a faulty Mainboard in the set then (the AV Input board) and will need to replace that board to fix the issue. It provides the turn on command to the set (which you don't have) and the Samsung tech notes for this set state to disconnect the ribbon, check for backlights and this determines if the fault is the power supply (no lights) or Mainboard (screen lights).
It seems the Mainboard for this model, has been unavailable for quite some time now. It does not even show as "Out of stock" anymore- simply does not show up in a search. That said if you want to TRY to procure a Mainboard, then your only hope is going to be to pull the PART number off of the board in your set and Google it to try and find a match (Samsung has been known to use the exact same board across different models).
Doesn't look like you have enough numbers there, but a quick Google search of the number you posted pulls up this (which has those numbers in it - but also some more).Visually inspect the board and compare and also look for any other numbers/letters that may match:
http://I'm not sure if you're having problems replying? Please don't try to reply to the e-mail the site sends you. Instead use the link to get to the site page and reply here.
Sorry for that bad link, having site issues. I will post it again:
View this link and check the numbers/letters on your board:
You can also post a picture of your board if you'd like, but it will need to be a high quality HD picture in order for me to be able to read the part/board number.
Do you need further assistance with this?
If you need further assistance let me know. Before you go, PLEASE DO click at least a 3 STAR RATING, at the top of your screen. That is how I am credited for my efforts by the site. You can follow up any time as needed at no additional cost.
Okay sounds good.
Does that board I posted above appear VISUALLY the same as your board?
I'm asking because the part number matches, but I cant see an overall picture of your Mainboard.
I'm sorry I can't match up all of the part numbers between these. I will opt out at this point.
Hello, I'm Shahid. Sorry to hear that you're having trouble with this but I'll do my best to help.
- Could you please get me the complete model number/code written on back of TV?
These info will help to assist you further.Thank you.
Thanks for TV model number info. TV needs main board replacement.
Correct part number of main board is BN94-02585B which is available at following suppliers..
or you may please search/ google the part number BN94-02585B to get better price info to order it. Backlight system of display panel and power supply boards are working fine as it was confirmed by unplugging connector runs between main board and power supply board. I hope these info will help. If you have any additional questions, feel free to ask. If you're satisfied, please rate me a 5-star at the top of your page. Thank you.
Please only check 5V and 13V DC output, if POW ON-OFF volts goes low and high repeatedly then it is main board failure. Rest of volts are control volts that changes itself as per picture settings of TV.
Rest assured, it is main board failure and replacement of identical main board will resolve the problem.
Do you need any further assistance with this question?Thanks.