There is a Fujitsu AH532 motherboard which has no reaction by the time of pressing start button and it doesn't turn on at all.
And the best part is that according to the power supply, everything is totally normal and there is no disconnection.
with this situation, I'll check is the voltage input (19 volt) to see if it's present on motherboard or not. then the standby controller, its bobbins (bobbin 3.3 and 5 volt), Diodes and the MOSFET and capacitors near the controller.
I'll use schematics to discuss and analyze the input block and the main voltage direction on motherboard and also talk about some of microcontroller pins. and in the end I will find the faulty and failed components or blocks and fix them.
Video Time: 13:19 min
Video Size: 400 MB
And the best part is that according to the power supply, everything is totally normal and there is no disconnection.
with this situation, I'll check is the voltage input (19 volt) to see if it's present on motherboard or not. then the standby controller, its bobbins (bobbin 3.3 and 5 volt), Diodes and the MOSFET and capacitors near the controller.
I'll use schematics to discuss and analyze the input block and the main voltage direction on motherboard and also talk about some of microcontroller pins. and in the end I will find the faulty and failed components or blocks and fix them.
Video Time: 13:19 min
Video Size: 400 MB