Good day all.
I have a 0-20v @ 20amp, bench power supply.
Upto a few weeks ago this unit was working fine.
But since then if you pull more then about 5amps from the unit, the step down transformer starts humming quite loud, and after a short time starts to get hot.
I can not see any damaged components on the PCB's.
I have removed the bridge rectifier (KBPC2502), and tested it with my DVM, and found that one of the four diode's has failed and gone open.
So my 1st question is, as the bridge rectifier has failed would this be putting more strain on the step down transformer, Or am I still looking for more failed components.
2nd question, If it is just the bridge rectifier at fault, can I replace the KBPC2502 with something like GBPC5008.
Thanks for your time.
Best Regards.
I have a 0-20v @ 20amp, bench power supply.
Upto a few weeks ago this unit was working fine.
But since then if you pull more then about 5amps from the unit, the step down transformer starts humming quite loud, and after a short time starts to get hot.
I can not see any damaged components on the PCB's.
I have removed the bridge rectifier (KBPC2502), and tested it with my DVM, and found that one of the four diode's has failed and gone open.
So my 1st question is, as the bridge rectifier has failed would this be putting more strain on the step down transformer, Or am I still looking for more failed components.
2nd question, If it is just the bridge rectifier at fault, can I replace the KBPC2502 with something like GBPC5008.
Thanks for your time.
Best Regards.