It turns on for about three seconds then turns back off. The blue light in the front flashes three times every time it turns on. I unpluged all the connections to the power board except the main board and it still does it. The PS_ON is at 3.65 volts when iot turns on, stand by is 5 volts when on. I pulled the power board and found Q5801 bad (AV2 18N50) Mosfet. There are no bad caps on the power board. I checked them with an ESR meterI did not find a short to ground on the buffer boards when checking with an ohm meter. No dark spots anywhere on the board. Has anyone else had this trouble and is there anything else I should be checking on the power or main board. The power board is PSPF501A01A. I have to locate my camera to send pics
Topic: Samsung HP S5053 (Read 3869 times)