[SOLVED]820-2879 strange power on

Bohmmen

New member
Hi.

Got this board yesterday.
When I press powerbutton the fan spins for 5 sec then it dies.
For some strange reason I decided to keep holding down the powerbutton longer and after 10 sec I heard noice from the dvd drive and after that a normal DONG.
It booted normal and everything seems to work.

I have tried another keyboard with same results.

What is causing this problem?
 

Bohmmen

New member
PPBUS_G3H is 12.63v
PP3V42_G3H is 3.42v
PP3V3_S5 is 3.3v

they are all stable and doesn't change.
Battery is charging.

Board Looks nice
 

Bohmmen

New member
Ok

Current (IPOR) --Battery-BMON Eng (test 1) - Sensor Reads Within Operating Range
- Check to ensure that sensor reads within operating range.
ERROR - Sensor is reading above the high limit.
- TEST FAILED -
 

dukefawks

Administrator
Check sense resistors and traces again, this is a current sense issue in R7050/51/52 circuit. Corroded trace or resistor, measure resistance between pins 17 and 18.
 

Bohmmen

New member
replaced R7050 and ran a jumper from R7051 and now the error error in ASD is gone and everything seems to work.

Thanks alot for your help
 

Bohmmen

New member
New problem.
Everything worked perfect except the dvd-drive. turned it off and mounted another drive. now it wont start.

PPBUS_G3H is dropping from 12.6 to about 3.3 v and then back to 12.6.
no PP3V3_S5
Bad ISL6259?
 
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