It’s been a long time guys, I’ve taken a long break from amplifier repair because of the cheap Chinese bullcraps, the fakes the clones and the knockoffs. However a friend bring this to me and I couldn’t resist the good “old school” days….what are the gate resistors used in this amp powersupply and does the IRFP264 are the original FETs installed at manufacture?
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Say I’m gonna use back these FETs (IRFP264) can I use same 22ohms gate resistor or 47ohms as it seems it was working with the missed matched. The power supply is still good, just that whosoever did previous repair didn’t replace the scorched resistors. Another finding I see the output uses 4x 31N20D & 5x 9640 (I assumed it plays at time of previous repair) but is that the original manufacture part numbers for this amp?
The 264s are weak (current rating).
Yes on the gate resistors if you use them.
FQP19N20 and IRF9640. If the 31N20s are good, I'd use them if they work in the amp.
Yes on the gate resistors if you use them.
FQP19N20 and IRF9640. If the 31N20s are good, I'd use them if they work in the amp.