hi
got a 820-2936 board. board got liquid spilled.some or bit on u2800 q5030 r7551 ( those areas)
board power up but missing CPU VCORE.
checked on U7400 PIN1 VRON 3.3V PIN2 0.5 PIN 40,24, 15 are around 5v
should be good to go , but no CPU VCORE,replaced U 7400,Q7550 Q7520 already. same thing
one hint i found out was diode mode on pin 1 R7555 was "0" , i measured on another board is around 500-600.
so i think either u7400 or Q7520 is bad, i replaced both. then checked, back to normal around 500-600
but once i connect power, no CPU vcore, then disconnect charger. check again later, back to "0"
kind of confused with that and stuck now
any advice would be appreciated!
thank you!
got a 820-2936 board. board got liquid spilled.some or bit on u2800 q5030 r7551 ( those areas)
board power up but missing CPU VCORE.
checked on U7400 PIN1 VRON 3.3V PIN2 0.5 PIN 40,24, 15 are around 5v
should be good to go , but no CPU VCORE,replaced U 7400,Q7550 Q7520 already. same thing
one hint i found out was diode mode on pin 1 R7555 was "0" , i measured on another board is around 500-600.
so i think either u7400 or Q7520 is bad, i replaced both. then checked, back to normal around 500-600
but once i connect power, no CPU vcore, then disconnect charger. check again later, back to "0"
kind of confused with that and stuck now
any advice would be appreciated!
thank you!