PT-80 troubleshooting

Started by Barcode80, January 15, 2007, 01:06:26 AM

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Barcode80

Okay, whipped up the PT-80 from GGG. Got no sound when engaged. on the PT2399 I have decent voltages all around. On the TL072 and the NE571 though, almost every pin shows .5 volts. can that be right? Doesn't sound right to me...

Can someone shine some light?