Hello everyone!
I don't want to quit from this project yet, I recapped each and every single capacitor on the logic board and the analog board. Replaced the two diodes (DP3, DP4) and the optocoupler as some suggested. Reflowed most of the solder joints on the back of the board and searched for broken or cold joints. No luck. The only way I'm able to increase the voltage to the minimum required to boot is using a hair dryer (shown on the video below). I tried to pinpoint the exactly location where the hot air flow is directed and it seems to be the top part where the MOSFET and some caps are located.
Does anyone know what could be the issue? Please I don't know what else to try. Many thanks!
I don't want to quit from this project yet, I recapped each and every single capacitor on the logic board and the analog board. Replaced the two diodes (DP3, DP4) and the optocoupler as some suggested. Reflowed most of the solder joints on the back of the board and searched for broken or cold joints. No luck. The only way I'm able to increase the voltage to the minimum required to boot is using a hair dryer (shown on the video below). I tried to pinpoint the exactly location where the hot air flow is directed and it seems to be the top part where the MOSFET and some caps are located.
Does anyone know what could be the issue? Please I don't know what else to try. Many thanks!
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