Guides and support for various TV brands and styles.

3677 Questions View all

No picture, double clicking every 30 seconds

Block Image

Samsung 40 inch LCD Television model LN - R 408 DX (slash) XAA

Built in 2005. Bought used this summer 2017. Worked for a month, then front red LED light would blink 5X, and go out, no more picture. On these models, usually the condensers go bad and it's an easy fix, they had a class action lawsuit regarding substandard condensers, but they all look fine, and the TV Repairman said they were good. He soldered in new NTC thermister, not the original model, but close. Worked for another month, then same problem. A company (PTS Electronics) will trouble shoot and repair my power supply board for $68 + $10 shipping. But before I throw good money after bad, does anyone have experience with this model? Thank you.

Update (09/21/2017)

I am not an expert on Ebay, but does a company like Electroparts Warehouse actually look for bids?

Answered! View the answer I have this problem too

Is this a good question?

Score 0
Add a comment

1 Answer

Chosen Solution

@dbk that is going to be a tough one because of the multiple recalls. Remember that even so the capacitors look good they can have failed. You would need a multimeter that test capacitance or an ESR meter (better so you do not have to remove the capacitors from the boards) to actually test the capacitors. I can not make out the connector on your power board so if you can take a couple more images and post those. That way you could at lest check the outputs etc. on the connectors. If you do not have the tools etc. to diagnose this then a replacement power supply might just be the answer. they are available for around $30USD at places like ebay.etc. NT8015 on your board does not look right. Looks like it got hot. Remove the board and take a look at the underside, check for burn marks.

Was this answer helpful?

Score 3


Thank you for your reply. I did bring the power board into a repairman, and reminded him that I'd read that the capacitors can look good and be bad, but he said not on this board. What is NT8015? If you tell me where it is I'll send a closeup picture. What do you mean that "it does not look right. Looks like it got hot." I have looked at the underside to check for burn marks but did not see any. Would that be remedied anyway by getting a new power board? Do you have a source for the powerboard? I only found that one from PTS Electronics but they're expensive.


Oh, I see, I think you're looking at the NTC thermister, which is the replacement part that the repairman soldered in, that's why it looks burned. It was not an exact match, he didn't think they still made the originals, and he charged me $20 to solder a replacement in, "not guaranteed". Guess that was a bad choice on my part. I found this on Ebay:

$38 free shipping, but I can also make an offer. Recommendations? Thanks.


That looks like it should work for your TV.


Just bought it, hope it works!


Add a comment

Add your answer

Dana Kaplan will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 0

Past 30 Days: 0

All Time: 55