Sound Skulptor forums
Build help and troubleshooting => LA502 Optical Compressor => Topic started by: Smith on February 11, 2022, 09:20:17 PM
-
I've tried many times to run set-up but do not get 15 volts. Here's what I've done on 2017 Rev 1.2 Board
- Voltage on all IC's
- Scoped Audio at R2, P1, C4, TP1 and Output 2 & 4
- Confirmed correct resistor and cap values and placements
- Tested input Trafo
Schematic reads 22p on C4 but the parts list is 47pf, which is what I have in this spot.
I am able to dial in 1VAC but switching the comp IN but turning the gain only provides about 2.5VAC.