Watkins Dominator junk box build

[nosaj]

Haven't worked out the trem side yet, but on the plain side the 2 input jacks one of the grid inputs was one the ground lug. So it's passing some signal, But on a curious note, I checked the voltage on the signal generator It was inputting about 3 volts w
but with a guitar can't hear it. So maybe this weekend I'll be able to get some scope pics along the amplification route.

nosaj

[nosaj]

After getting fed up with inconsistent meters I got a new Fluke 110 and took measurements on it
V1(6ca4) pin1 253vac pin3 240VDC Pin7 250vac
V2(el84) pin2 38vdc pin3 38vdc pin7 217vdc pin9 209vdc
V3(el84) Pin2 38.25vdc pin3 37.54 Pin7 219vdc pin9 211vdc
V4(Tremelo12ax7) Pin1 109vdc pin3 76.8vdc Pin6 111vdc Pin7 32 Pin8 76.7
V5 (PI 12ax7 )Pin1 208.7vdc Pin3 78.7 Pin6 145 vdc Pin7 76.1vdc pin8 78.7 vdc
V6 (Normal 12ax7) pin1 112 Pin3 .776vdc Pin6 112vdc

Things that stick out to me since coping my notes to computer are V6 Pin3 voltage is odd and I don't have a measurement for pin 8 though its bridged I will go back and check it and R1 and C1 or should I be checking R4 and C4. For a low measurement Do you zone in on the side white low voltage or the other?

Thanks,
nosaj

[nosaj]

Looks like a schematic error to me. I wouldn't trust that schematic. All the other schematics I have seen have the Normal inputs wired for Hi and Lo sensitivity. Lo uses only one triode and Hi uses both in parallel (See attached scm).

Also on the Trem channel inputs there is a 'blob' missing, the right end of R20 should be connected the the left end of R19. And I'm not sure of the EL84 grid leak resistor value. They are usually 470k but on this schematic they are 47k (R31,R32).

[ATTACH=CONFIG]40512[/ATTACH]

Your schem shows 3.3k so the 47k I have would definately throttle the volume?

Thanks,
nosaj

[nosaj]

Ok I'm wondering if this is a across the pond thing like how dates are arranged or something. But the bypass caps listed as 50/25 or 25/12 are actually 25uf/50v and 12uf/25v? I'm pretty sure they are and wondered if there might be other things on this schem I might not notice at first.

Thanks,
nosaj

[nosaj]

Ok everything wired up but the trem side. Sounds good,On v3b pin7 if I ground the .002 cap it's a volume boost(it connects the Trem side to the circuit.) Maybe I can finish up the trem side later today. But the schem I'm working on now seems to work where as the other schem I was working off either was faulty or I had a miswire. But completely gutting it ( removing all resistors and caps) and redoing it seems to have worked out in my favor this time. Though the true point to point requires a little more effort to lead dress, so far it's quiet as can be till you add signal.

Nosaj