Recent content by PangeaDestructor

Tested on my cheapo meter - even desoldered Q2 and put it back on the tester to make sure i had it right, because the output sounded like I'd reversed them. Didn't get a chance to reflow last night, but I'll hit that one today and see if it changes anything.

Under my magnifier it looks to me like brown black black brown brown, yes.

Sanity checks are necessary and appreciated, I have audio at all 3 legs of q2.

They're both MP21a

Right, but the numbers here are negative, so wouldn't the higher number range there actually be less voltage? I attached a probe to q2c - turning the sundial ccw/left sent the reading to -8.3, turning it cw/right all the way was -7.2v.

Yep, with sundial fully cw the bias range at q2c goes from 7.42 to 5.94

Swapped out the pot for a b1k, since I had one in the pile. Doesn't seem to have solved the issue, but it brought the q2c voltage down by about 1v (bias trim now adjusts it from about 7.2v up to 8.3v.

Yep, I just replaced it with the correct value. Doesn't seem to have solved the issue, but it brought the q2c voltage down by about 1v (bias trim now adjusts it from about 7.2v up to 8.3v.

You mean replace the b5k with a b1k? Just making sure before i go digging for one, I may have that around somewhere. I do get a ground connection on the + leg of c2. Edit: I used a b5k when the fuzz pot should be a b1k. This is the kind of thing I do, so unsurprising to me but needed it called...

Pin 1 is grounded, pin 2 i have continuity with c2, pin 3 i get continuity at both R1 and q1e

with sundial and bias fully CW, resistance is 9.06k ohms. Fully CCW it's 1.416k ohms.

Using the pinout in the bottom left of this image (https://i.pinimg.com/736x/d4/1e/99/d41e99c7407ae218cfbe7ef4b2d57f5c.jpg), i get the sweep from ~0 to 4.7k between pins 1-3 and 2-3, and 0 ohms from 1-2.

With all the pots at max, transistor voltages are Q1 E 0.00, B -0.072, C -0.255 Q2 E -0.273, B -0.247, C -9.02

I'll check those transistor voltages tonight after work and post them up here, meant to include them in my original post. q2 collector is right around 9v.

I confirmed that all cap values and orientations are correct