(347) 552-2258 [email protected]

820-00163 Chimes but no video

bjf

bjf

Member
Tried the new bios file. No change. It acts like the other new bios files. It has the LED flash on the keyboard (original one didn't) and has no chime (original one did chime once). It doesn't respond to PRAM reset. Neither bios has ever allowed a PRAM reset.
 
2informaticos

2informaticos

Administrator
Staff member
Did you try another keyboard?
Test USB activity with USB OSX pendrive; if LED flashes you'll be sure there is activity.
 
S

SMMRepair

Member
Are you 100% positively sure this board did not have a spill? Inspect CPU power supplies and regulator/controller IC very well, and all surrounding caps. Even if just a single drop or sign of residue, then that's enough. I am still not convinced this isn't a BIOS issue (one of your original reads could have been corrupt/bad, original ME damaged and none of the successive ones good/bootable with board, etc), but it could be a damaged CPU.

Board may have been dropped as well.
 
Last edited:
bjf

bjf

Member
Tried multiple keyboards. Won't respond to PRAM reset. Tried USB flash drive. The light comes on and stays on. No activity, just a constant light. I've never seen that one before.

Can never be 100% sure, but there is no sign of a spill that I can find. I've combed over it exhaustively. Can't find anything that looks damaged in any way.

• Original bios: chimes once only. no usb light flash at all
• New bios chip: no chime. has usb light, but no actual activity
• Repaired bios with original ME and serial: no chime. has usb light, but no actual activity (I tried two different chips just to be sure.)

Not sure what else to do with this.
 
You must log in or register to reply here.
Top