Hey everyone. I've read as many posts as I can handle but it's all running together.
Crack, purchased LY but just put together a couple months ago. Built base kit, worked, sounded great. After a few weeks of use I started the speedball upgrade. Small board voltages checked-
OA 70
IA 187
B-A/B 0
IB 187
OB ? I didn't write it down
After small board, I tested resistance, all passed, tested the unit with headphones for about an hour and it sounded great.
Went for the big board. Now the two LEDs on the B side do not light up, and the 6080 tube doesn't glow now. Small 12AU7 tube does light up as expected.
small board:
OA 68
IA 212
B-A/B 0
IB 212
OB 81
Big board
OA 0
OB 1.5
G 0
B+ 213
T7 - 1.5
T9 - 0
Prior to speedball, B3 showed 2.94k and B6 showed 2.95k resistance.
Now, B3 shows 7.5M and B6 shows .7
I cleaned and reflowed OA, OB, G, B+ (all on large board), T6, T7, T9, T10, B3, B6, and terminals 7 and 9 on the power supply. Both my 9-pin LEDs and the 4 small speedball board LEDs are all lit up.
Not able to post photos...
Help? Thanks in advance.