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Ask Shahid Your Own Question
Shahid
Shahid, Technician
Category: Electronics
Satisfied Customers: 11579
Experience:  I have been repairing electronic gear since 1993 as a qualified Sony tech
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My samsung tv wont switch on just blinks a red light

Customer Question

My samsung tv won't switch on just blinks a red light
Submitted: 3 years ago.
Category: Electronics
Expert:  Shahid replied 3 years ago.
Hello, my name is Shahid, I'll be happy to assist you.
Please allow me to ask you a few questions to diagnose the problem.

- Can you please get me the model number written on back of Samsung TV so I can open up related manuals for trouble shooting?
- Also, how old is the TV and how long it have had the problem?
- What was the original symptoms in TV that you decided to took the circuit board out?

Thanks.


Customer: replied 3 years ago.
It is a samsung LE40A457X1D

We turn it on and it just remains blank and the little red LED flashes. I now have the back off and removed the circuit board.
Expert:  Shahid replied 3 years ago.
Thanks for the info.

- How old is the TV and how long it have had the problem?
- What circuit board you have removed from TV?
- Is it power supply board and do you see capacitors having top puffed, bulged or swollen etc on power supply board?



Customer: replied 3 years ago.
The TV is 6years old, yes it's the power supply board I have removed.

The capacitors labeled CM852 and CM853 look bulged at the top bit of black on top of CM853
Expert:  Shahid replied 3 years ago.
OK, sorry for delayed reply, I was away from computer.
Can you please get me the part number off of power supply board?

Customer: replied 3 years ago.
It's says model: IP-211125A is that correct?
Expert:  Shahid replied 3 years ago.
No, part number would be like BNxx-xxxxx

Customer: replied 3 years ago.
I gave you the wrong TV model earlier it should've been LE40A457C1D

Is the part number on a white sticker as there is two one says

M83D024127

And the other

SEC S/N:CN08BN4400199ASE38C3L0246 R.C.
Expert:  Shahid replied 3 years ago.
Thank you, BN4400199A is the part number of that power supply board.

Please check the capacitors in area that I marked with yellow outline in picture of power board uploaded at following link..

http://i.imgur.com/r7rBvFU.jpg

Do you see any bad one there?

Customer: replied 3 years ago.
Yes two in the top box are raised and and look like they have had a leak
Expert:  Shahid replied 3 years ago.
Thanks David for the info.

Either replaced capacitors on power supply board which requires soldering work with proper tools and skills OR replace entire power supply board which would be plug and play type work that would help to resolve the problem.

Required power supply board can be search/ google with part number BN44-00199A for price and stock info to order it.

I trust my input will help you out. Please feel free to respond if you have any additional questions.
A positive rating to answer would be greatly appreciated, please click on smiley face under the answer then click submit button so I can get credit on website for my work.
Regards,

Shahid.


Expert:  Shahid replied 3 years ago.
Hi there,

I wanted to briefly follow up with you and see how the info worked, and see if that accomplished what you were looking to do!

Please reply back here if there is additional questions.


Thank you.