Anyone have a schematic for a Punch 500.2 they would be willing to share?
I repaired the power supply and replaced shorted outputs. The amp pulses. I removed all the IRF540s and the amp runs. Of course I only get half the wave at the output. If I put an IRF540 in either channel the amp pulses. It doesn't matter which position I install the IRF540. I figure it must be something common to both channels. Thanks.
I repaired the power supply and replaced shorted outputs. The amp pulses. I removed all the IRF540s and the amp runs. Of course I only get half the wave at the output. If I put an IRF540 in either channel the amp pulses. It doesn't matter which position I install the IRF540. I figure it must be something common to both channels. Thanks.
What's the PC# on the board?
I'm assuming that you're not trying to use the 540N which can cause problems.
Is the bias set too high? Set them fully CCW to start.
I'm assuming that you're not trying to use the 540N which can cause problems.
Is the bias set too high? Set them fully CCW to start.
Yes the amp runs with bias turned all the way down. Can you tell me procedure for setting the bias?
See attached.
The 3082 diagram had no supply diagram so the other was included. It should be close.
The 3082 diagram had no supply diagram so the other was included. It should be close.
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