Bottlehead Forum
Bottlehead Kits => Crack => Topic started by: Karmafloyd on November 01, 2014, 01:40:29 PM
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Hello and thank you for your assistance.
Completed soldering and ran resistance checks, which passed. A few voltages are significantly off, though.
Terminal 7: 147 instead of 100
A1: 76 instead of 90
A6: 0 instead of 90
B1: 148 instead of 90
B3: 148 instead of 100
B4: 76 instead of 90.
The remaining terminals appear fine. I also checked my soldering and the schematic, but was hoping this info might assist in a diagnosis.
Thanks again for any help.
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A1: 76 instead of 90
That's OK, the 12AU7 is just conducting like a new tube.
A6: 0 instead of 90
A6 ties to T1, are they both reading 0? Do both LED's glow on the 9 pin socket? Do both halves of the tube light up?
B1: 148 instead of 90
B1 should be wired to A6 through terminal 1. You can't have 148V at B1 and 0V at A6 without a wiring error present.
Focus on these for now, the rest of the odd voltages are odd because of these.
-PB
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I really appreciate it. I will review tomorrow and report back.