Samsung PN59D7000 cycles after logo

[ziddey]

Found a similar thread https://www.badcaps.net/forum/showthread.php?t=24554 where the culprit was the main board. Is there a conclusive test for this?

The main board for this model is BN41-01605A / BN41-01605 and is unavailable anywhere currently.

If the fault is with the firmware, is there a way to reprogram it via SPI or similar? If not the firmware but the board is at fault, I'm tempted to throw it in the oven.

On plugging it in, it turns on, shows the Samsung Smart TV splash screen, then shows the input mode (HDMI1/DVI) in the upper left. Then it clicks off and back on.

Unplugging the buttons has no effect.

The LED does blink in response to remote buttons, but it doesn't actually do anything (power/volume/source etc).

A green LED on the buffer? board does blink. Not sure if that's normal.

I did notice that the Y board does make a slight noise. All caps seem fine visually. Picture is great though before it cycles. I've heard similar noises from other plasmas, so it might not be of significance.

Should I be on the lookout for a main board? Any tests I can do?

edit: main board sticker reads BN94-04689B

[ziddey]

Re: Samsung PN59D7000 cycles after logo

update: I just came across this listing: http://www.ebay.com/itm/SamSung-PN59...-/322114274014
And decided to attack my chip with some canned air. Thing turns on and stays on as long as I keep the chip frozen. Incredible.

edit: also https://www.badcaps.net/forum/showthread.php?t=52522

[martino]

Re: Samsung PN59D7000 cycles after logo

looks like a fun repair,good detective work,wish I had more of those fun repairs...

[ziddey]

Re: Samsung PN59D7000 cycles after logo

It's alive! Lousy soldering job but it works!

[raileanu]

Re: Samsung PN59D7000 cycles after logo

Please does anyone have the NAND dump FOR BN41-01605A?