Muzzle won’t power on

Ic3
1-8
-.02
-.02
.001
-2.637
.002
-.013
-.013
8.66

Ic1
1-8
1.989
4.646
.005
-3.096
-6.61
2.558
1.392
8.68

ic2
1-10
-.262
-1.385
-.836
-.332
-.285
-.404
-1.619
0
0
-2.615

11-20
8.67
-.287
-.286
-1.648
-1.62
0
-.295
-.411
-.259
.003
 
Ic3
1-8
-.02
-.02
.001
-2.637
.002
-.013
-.013
8.66

Ic1
1-8
1.989
4.646
.005
-3.096
-6.61
2.558
1.392
8.68

ic2
1-10
-.262
-1.385
-.836
-.332
-.285
-.404
-1.619
0
0
-2.615

11-20
8.67
-.287
-.286
-1.648
-1.62
0
-.295
-.411
-.259
.003
The voltages are all over the place, Clean the board & check for Dry joints & Bridging, ie solder jumping onto another pad.
This is critical when buiding these circuits to Clean the flux residue off the PCB.
It will show any dodgy solder on the pads!
I use Electrical Contact Cleaner in a Spray Can on the Solder side directly.
You can use it in conjuction with a Toothbrush if you have trouble cleaning though it has not been needed with my Builds.

Cheers music6000
 
Cleaning, reflowing them clean again would be my recommended first thing to do. If that doesn’t work I’d say it’s audio probe time. How are your skills at reading schematics?
 
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