Hey, just completed my Bottlehead Crack!
I thought everything went great, all ohms and voltages seem right, but for some reason the right channel has a low hum that increases with volume, but at full volume it goes away.
Also, I notice that the rear LED gets brighter as the hum gets louder, but then also goes dark at full volume.
Additionally, the right channel is MUCH quieter than the left, really almost silent compared to the left.
Also, when adjusting volume, the right channel is very scratchy whereas the left is nice and smooth.
Switching inputs and RCA cables and things prove that it's not the source.
I've tried resoldering all over but nothing seems to fix it. It would help if anyone could point me to likely culprits.
Seems like maybe a grounding issue or something in the right channel but I can't seem to get it to go away.
Thanks!
Voltages:
1. 67.8
2. 176.5
3. 0
4. 176.7
5. 66.6
6. 0
7. 97
8. 0
9. 94.5
10. 0
11. 0
12. 0
13. 177.3
14. 0
15. 197.5
16. 0
17. 0
18. 93.1
19. 0
20. 218
21. 0
22. 0