mbcontrol
Member
I'm working on a 820-01598-06 that had liquid damage around U7270 and U7210 and was stacking at 5V. Liquid damage is cleaned.
PPBUS_G3H had a short to ground with 13.7Ohm. The same value i measured at L7270. So i changed U7270 and the Short was gone and i have 20V on the charger.
The problem now is that U7270 gets real hot. The board takes something over 1A.
The original U7270 on the board was an FDMF5812, the schematic shows an SIC532CD. I changed U7270 now two times. The first time i took a SIC532CD from a donor. The second time i took a new SIC535 with same problem.
I'm not very good in understanding mosfet circuits and need some help.
PPBUS_G3H had a short to ground with 13.7Ohm. The same value i measured at L7270. So i changed U7270 and the Short was gone and i have 20V on the charger.
The problem now is that U7270 gets real hot. The board takes something over 1A.
The original U7270 on the board was an FDMF5812, the schematic shows an SIC532CD. I changed U7270 now two times. The first time i took a SIC532CD from a donor. The second time i took a new SIC535 with same problem.
I'm not very good in understanding mosfet circuits and need some help.
