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pin 4 of the tda is also giving a 40V ac signal that fluctuates down to 0 and back to around 40

Transistors and cap values all check out. Resistors too for the clock circuit. I'm starting to think maybe it has to do with the DC DC converter but I would think it should still work at least a little bit. maybe not though

I'll confirm. I even redid the c21 22 24 and 25 today in the clock circuit

I ordered a new DC/DC converter that will supply the higher current. had the 1W version and the RD (new correct one) has 2W with double the current

The only place I could get a reading was pin 3 of the 1458 and it was like 2.4hz

Still not having luck with pin 1 to gnd and pin 4 to gnd

Running at 12dc I can get -15 on pin 9

Upon some further investigation I have the RP not RD model. The RP is 1w not 2w. should be the same voltage though?

I don't seem to be getting anything. OL between pin 1 and 4 on the 1022

Mine can measure up to 50khz let me see what I get

Should I try the pedal at 12V?

I have the recom RP-1215D. And yes DMM has frequency function

yes! thats why I am hoping its not a bad chip

For the 1022 I had these voltages (DC): 1 -5.2 4 -5.6 5 -3.1 8 -5.4 9 -11 13 -10.8 12 - 5.8 Everything else is 0 or in the mV range. For IC1 and 2 i had -11 at pin 4 and 9.5/10 at pin 8

no scope on hand, the jumper is for an optional chorus depth. I have a jumper between pins 2 and 3 per build docs

I swapped all the ICs minus the 1022. Not having any luck so far. The clock seems to be working but no chorus sound

my dc/dc is around 11V which matches the build doc. I have verified all components are correct. Wiring and soldering joints look good, not really sure what else would be causing it. I swapped the LM1458 for a MC 1458 and no change

pin 8 and pin 12 I hear a chriping sound that is aligning with the rate LED

I can hear ticking off the 1458 and on some of the TDA1022 pins. Let me fire up the probe again and test again. The chorus vibrato switch works and the rate changes the LED. I could try swapping the 1458 and 072