Samsung QE65Q8F not turning on

[unimatrix93]

You can try desolder it, read it when freezing with compressed air can, and rewrite it.. before it try booting the set when pressing down the cpu, the emmc, the two ram, in turn..

First I try pressing down on the ICs and If it doesn't help I proceed to rewrite the SPI as you said.

[unimatrix93]

I tried pressing down on the CPU,EMMC, and the two RAM ICs while pressing the power button, did not help sadly. I will try the compressed air trick you meantioned on monday however.

[Diah]

I tried pressing down on the CPU,EMMC, and the two RAM ICs while pressing the power button, did not help sadly. I will try the compressed air trick you meantioned on monday however.

why you go to this point and you have at first start script from SPI the front LED faint... ? remove load such wifi or BT, check and test yours LED BL, as they are edge and from 7 years in work. if all are fine then as i said no communication between SPI and SoC and this this is BGA, with pressing bring nicht

[unimatrix93]

why you go to this point and you have at first start script from SPI the front LED faint... ? remove load such wifi or BT, check and test yours LED BL, as they are edge and from 7 years in work. if all are fine then as i said no communication between SPI and SoC and this this is BGA, with pressing bring nicht

Sorry for the late reply.

I ordered a new mainboard and it works perfectly fine.

Thank you everyone for helping me diagnosing the problem.