[SOLVED]820-2850 smc io failed asd

aurel476

New member
History board begin by no green/orange light, find short on ppbus replace u7000 burned and Q7035, and replace smc because battery not charging, so now board green light/orange light and only error in picture.

noticed if i unplug battery indicator orange light present,

if i plug battery indicator no orange light only green light and i need push power button for startup.

smc replaced twice and exactly same problem

i've checked all resistor of smc smbus connections page 48 on shematic

any idea ?
 

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dukefawks

Administrator
IO failure so usually SMBUS problem. Let it continue on error and see if there are more IO errors.

Also you battery indicator is probably bad as it messes up the battery data lines and it will not charge when connected.

I assume you replaced the SMC with one from an identical board?
 

aurel476

New member
Solved Q5501 broken, i will replaced also battery indicator, SMC replaced from identical board ;) thanks
 
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