[SOLVED] 820-00165 no video no chime

BCN_Techs

Member
Got this board with just 1 resistor bad R6125 (seems it was water damage just on 1 pin).

CHecked all resistors near U6100 and they are ok. When plug magsafe fan spins for 5 seconds than turns off and than spins again for ever.


CPU is getting warm, all rails are ok, i have vcore 1.8V, ALL SYS is 3.3V. There is USB activity but there is no chime and video.


Any idea?
 
Last edited:

2informaticos

Administrator
Staff member
There are more SPI Bus Series Termination resistors; some of them under PCH area, faraway of U6100.
You must check the ones close to J6100, as all traces too.

Sometime, liquid damage on SPI area can cause BIOS corruption.
 

BCN_Techs

Member
already checked all resistor and traces near U6100 and also new EFI with same result. Fan spins for 5-6 seconds, shuts down and turn on again without chiming and image
 

BCN_Techs

Member
it was SMC. All clean near but have shit under chip. Now it is working fine. Thank you.



What make u think it can be SMC?
 

2informaticos

Administrator
Staff member
Had liquid on SPI area, close enough to SMC.
I always recommend to reball SMC if detect liquid sign close to it.
Sometime need to reball it even if no visible signs on its area...
 
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