Samsung un50nu7090 standby light blinks once

[Davi.p]

Re: Samsung un50nu7090 standby light blinks once

so if neither turn on the tcon then the software doesn't start, it is possible that it's faulty the standby software that is inside a spi flash i think (ic503), less probably the main software, but which voltage do you find on other come coils?

[liquidzorch]

Re: Samsung un50nu7090 standby light blinks once

Here is the same photo, with squares indicating the voltages on each coil. Please note that the coils on the right side that seem to be tcon, and speakers, none have voltage, they get powered from the two mosfets I marked with an arrow, and these mosfets never get an ON signal. The rest of the voltages are present.

https://photos.app.goo.gl/xSdC1ubn8Rwmwp128

[Davi.p]

Re: Samsung un50nu7090 standby light blinks once

Power section is good, remain software or cpu desoldering..

[liquidzorch]

Re: Samsung un50nu7090 standby light blinks once

My money is on software issue, I have heated the cpu to see if there was any difference while hot, and nothing. The only problem is I can not find any information on programming or where to find the firmware. I have found a firmware update on the webpage, but I am guessing that is not the main firmware, and if it was, I have no idea how to flash the nand. I have epeirence in computer bios programming, so maybe I could flash the eeprom, but I cant find any files or info on this board at all.

[Davi.p]

Re: Samsung un50nu7090 standby light blinks once

have you access to ****************? if yes one attempt is to search for the spi flash firmware.

[liquidzorch]

Re: Samsung un50nu7090 standby light blinks once

What ever you said seems to have been censored. I have searched all week for firmware files, but have not found any.

[Davi.p]

Re: Samsung un50nu7090 standby light blinks once

have you got acccess to main Russian sites?

[liquidzorch]

Re: Samsung un50nu7090 standby light blinks once

No. I have no idea what site that would be. I normally don't fix tv's, just laptops and video game consoles. But anyway, the client called me today saying that she would prefer to just pick it up as is and sell as junk, so now I have to remove the LEDs and give up I guess.