Hello,
I dont if you guys can help. I received a dead PV 115D to repair on my shop. It was a little worn but it was working before.
I have the schematics and I'm somewhat skilled in traditional amps but not so much in digital ones.
From the start I've changed the IR2153 and both IRFP460 because they'd be the usual suspects.
And so far i got these readings on the power supply:
+304vDC after the diode bridge (it is within specs of schematic) and on the drain of the first IRFP460. Seems ok.
+8.4vDC on pin 1 of the IR2153 IC. That is a little bellow specs (12vdc) with or without load.
Anyone experienced with this model?
PV 115D not powering
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- Joined: Thu Nov 12, 2020 3:10 pm
Re: PV 115D not powering
I've managed to repair it (it was some circuit trails that were not working, had to put some wires).
But now i think the microphone volume is too low. It works fine with line leves, but its too low with microphone straight into the XLR
But now i think the microphone volume is too low. It works fine with line leves, but its too low with microphone straight into the XLR
Re: PV 115D not powering
I would check ZD901 and ZD902 and the surrounding components.
Sometimes they fail shorted, sometimes they are just leaky.
Sometimes they fail shorted, sometimes they are just leaky.