Bottlehead Forum
Bottlehead Kits => Crack => Topic started by: rat3hat on June 27, 2021, 06:24:11 AM
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The right channel stopped working. I thought it was the headphone jack so I desoldered, re-soldered a few times. I'm pretty convinced it is not the connections on the headphone jack. Tubes glow on both sides.
Crack has speedball. I went and did some re-measuring from the speedball manual. The small board passes all voltage checks.
On the large board, OA seems irregular/ fishy measuring ~125V. OB seems regular, but also measuring similar ~125V. Range is specified at 75-100V.
These could be red-herrings/non-issues and the one channel working may be something else. I can't really tell!
Any thoughts welcome.
Thank you
Chris
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What are the OA/OB voltages on your small board?
125V is higher than I would expect for normal operation. Are there any mods in this amp?
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Hi Paul.
The small board measures were in-range. I'll have to measure tonight again.
There are no mods in the amp (normal crack + speeball).
-Chris