XooP
New member
I'm kind of stuck with this old 820-2530 board. When plugged in the light on the charger is blinking.
PPBUS_G3H i fluctuating between 3.5V and 11.5V, at least this is what i can read on my multimeter. I guess something makes the charger start and stop.
It does not run on either battery or charger.
Current sensing resistors measures fine.
If I remove F7000 or R7008 the blinking slows down.
If I remove both F7000 and R7008 I get solid green light and PPBUS_G3H is 12.5V.
There is no short to ground om PPBUS_G3H.
I have measured resistance to ground on both PPBUS_G3H and PP3V42_G3H and they are both very high.
I have replaced U7000.
I have replaced both Q7020 and Q7021.
I have replaced C7008.
I do need some pointers now, I feel I'm looking in the wrong place.
PPBUS_G3H i fluctuating between 3.5V and 11.5V, at least this is what i can read on my multimeter. I guess something makes the charger start and stop.
It does not run on either battery or charger.
Current sensing resistors measures fine.
If I remove F7000 or R7008 the blinking slows down.
If I remove both F7000 and R7008 I get solid green light and PPBUS_G3H is 12.5V.
There is no short to ground om PPBUS_G3H.
I have measured resistance to ground on both PPBUS_G3H and PP3V42_G3H and they are both very high.
I have replaced U7000.
I have replaced both Q7020 and Q7021.
I have replaced C7008.
I do need some pointers now, I feel I'm looking in the wrong place.