820-00165 - Fan spin, no image, no chime

[rvanpruissen]

Hi,

I have an 820-00165 with no chime (and no image).
- Green/orange light
- All power lines are ok
- Fan spins

Suggestions?

Thanks,

Rick

 

[XooP]

CPU getting power?

 

[rvanpruissen]

Yep, CPU is getting power.

 

[XooP]

Clock signal?

 

[dukefawks]

PPVCC_S0_CPU voltage? Inspect board for liquid damage, especially around U6100 and J6100.

 

[rvanpruissen]

PPVCC_S0_CPU = 1.8V. J6100 looks fine. Area around u6100 looks (and measures ok).

Earlier I've replaced the clock chip. Is it worth replacing that again, just in case something went wrong?

 

[dukefawks]

Was this liquid spill?

 

[rvanpruissen]

I think so, but it was cleaned before I got it.

 

[dukefawks]

It could really be anything. Have you connected a USB mouse to see if it lights up?

 

[rvanpruissen]

I've connected a USB mouse and it's weird. It cycles through flashing two times rapidly and then nothing for 3-4 seconds, again and again.

 

[dukefawks]

Both ports the same?

 

[rvanpruissen]

Yes, tested on both.

 

[dukefawks]

Is this with the bare board with just an IO board connected?

 

[rvanpruissen]

Hey Duke, I've just tested it again thoroughly with just the bare board and an IO board. It does the flashing thing on the board itself. Contrary to what I said before, on the IO board it just flashes once when connected and stays off after that. Sorry for the confusion.

 

[dukefawks]

I have no idea, could be anything. Inspect again for corrosion especially in U6100 area and the resistors there. Also J6100

 

[rvanpruissen]

I'll check it again when I get home from work. Would replacing the BIOS be a good option to test? I don't know yet how to deal with the ME region, but it should work (slow) without cleaning it right?

 

[dukefawks]

No BIOS is never the issue unless it was messed with.