macRepairAmb
Member
Hello
Got this board liquid damage. Customer had already cleaned the board. Corroded RB631. Replaced resistor and also retraced a new line from RB631 pin2 to RB651pin2 as it's pad was missing. Also replaced QB631 due to signs of corrosion. Still won't power up.
Found L6900/01 missing. Replaced. Still won't power up.
Took below measurements
PPBUS_G3H - 12.2
PPDCIN_G3H - 5.17
PP3V3_G3H - 3.4
PP20V_USBC - 5.17
So replaced all the CD3215C chips with exact chips numbers. Still have the same result. Any other suggestions or is this dead board?
Got this board liquid damage. Customer had already cleaned the board. Corroded RB631. Replaced resistor and also retraced a new line from RB631 pin2 to RB651pin2 as it's pad was missing. Also replaced QB631 due to signs of corrosion. Still won't power up.
Found L6900/01 missing. Replaced. Still won't power up.
Took below measurements
PPBUS_G3H - 12.2
PPDCIN_G3H - 5.17
PP3V3_G3H - 3.4
PP20V_USBC - 5.17
So replaced all the CD3215C chips with exact chips numbers. Still have the same result. Any other suggestions or is this dead board?