BGAmodz
Member
Hello everyone here .
So today i have to deal with a card that belongs to a ARC welder , this card contains a smaall card .
After analysing the suspected areas responsible for the unit's startup , i have discovered some bad components , but i have trouble with a MOSFET (IRFPE40) , i have removed it put in my test breadboard , and without even triggering it i get drain to source connection as soon as i power on the device .
Is it due to static electricity or maybe a bad MOS ?
Also i found (on the small card ) a probably bad npn transistor (Kec MPS 8050D) giving junctions between collector and emmiter while performing diode test mode, can i replace it with a BC337 ??
So today i have to deal with a card that belongs to a ARC welder , this card contains a smaall card .
After analysing the suspected areas responsible for the unit's startup , i have discovered some bad components , but i have trouble with a MOSFET (IRFPE40) , i have removed it put in my test breadboard , and without even triggering it i get drain to source connection as soon as i power on the device .
Is it due to static electricity or maybe a bad MOS ?
Also i found (on the small card ) a probably bad npn transistor (Kec MPS 8050D) giving junctions between collector and emmiter while performing diode test mode, can i replace it with a BC337 ??
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