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IGBT and Diode Always Burnt In Laser High Voltage Power Supply

By on July 5, 2013
Can you please guide me regarding my laser High Voltage Power supply. One month before i have replace part IGBT G40N60B3 and Diode DSEI30-06A, after replacing the part my power supply working well, but now it will again Burn same part, so can you please guide me what is the reason and what  i need to do.

Answer:

I suggest that you check the related component along the circuit line that produce the signal to the gate of IGBT.  An improper signal, higher than normal voltage and not original parts used could destroy the transistor.Check the link below to get some ideas:

https://www.jestineyong.com/why-horizontal-output-transistor-in-crt-monitor-get-shorted/

 

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