UN65MU6300FXZC, no standby LED but power supply good. Bad IC1604 25Q40?

[Yanleb]

Hi all,

My UN65MU6300FXZC is dead and the standby LED stays off. The power supply is good. The main board is BN94-12434A.

Disconnecting the main board from the power supply makes the backlight come ON.

I did disconnect the panel cables and the WIFI modules, the board is still dead.

I did read in many posts that IC1604 25Q40 becomes corrupted. It has proper 3.3 volt on VCC pin 8. I did read that if I post its dump here someone can fix it. Is that right?

Thanks.

[lotas]

Hi all,

I did read that if I post its dump here someone can fix it. Is that right?

Yes, I can fix it (dump) for you. Yes, it's true

[lotas]

Can't read dump or don't have a programmer?

[Yanleb]

Thanks lotas, I have a programmer. Here is the dump file.

Where did you learn how to fix the dump files?

[Yanleb]

For writing back the IC, I use the MiniPro TL866CS. I see registers 0xFC and 0x42 instead of registers 0x88 and 0x42. Does it make a difference?

[lotas]

Thanks lotas, I have a programmer. Here is the dump file.

Yes, your dump is damaged, I fixed it. Registers should be 0x88, 0x42! (Status Register #1 0x88 (SRP0 BP1),
Status Register #2 0x42 (CMP QE)

Try it.
Here is an example of how to write dump correctly.
In the program:
1. Click "Detect Chip" and select W25Q40CL and "Select IC".
2. Click "Unprotect".
3. Click "Clear IC" and "Yes".
4. Click "Open File" and select your corrected dump.
5. Press "Program IC" and "Yes".
6. Click "Verify IC".
7. Press the down arrow to the right of "Unprotect" and select "SREG Edit", put a check mark on SRP0, BP1, CMP, QE and press "Write" and "Yes"
7. Close the program. Ready.

[Yanleb]

Thank you very much lotas. The TV is working perfectly now.

[lotas]

Thank you very much lotas. The TV is working perfectly now.

Ok!