In Reply to: What did he do to it? (nt) posted by Chip647 on May 8, 2021 at 14:55:57:
Well according to John S. aka deafbykhorns my amp had the following issues:
1) 5 bad cathode resistors (parallel 620ohm) at the 845.
2) 4 resistor way out of spec (various plate and bias)
3) Bad caps at 10v supply.
4) Some leaky cathode caps at the input tubes.
You can check out the photo to see the parallel 620 ohm resistors John removed and what he replaced them with. I hope John responds to this because I forget what the minor mods he did were...
Thetubeguy1954 (Tom)
Central Florida Audio Society -- SETriodes Group -- Space Coast Audio Society
Full-range/Wide-range Drivers --- Front & Back-Loaded Horns --- High Sensitivity Speakers
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Follow Ups
- RE: John Repaired These Problems! - thetubeguy1954 12:05:54 05/09/21 (12)
- RE: John Repaired These Problems! - Todd A. 15:51:18 05/14/21 (8)
- RE: John Repaired These Problems! - morricab 04:43:11 05/18/21 (2)
- RE: John Repaired These Problems! - Todd A. 19:27:54 05/18/21 (1)
- RE: John Repaired These Problems! - morricab 11:28:55 05/19/21 (0)
- RE: John Repaired These Problems! - thetubeguy1954 20:03:31 05/14/21 (4)
- RE: John Repaired These Problems! - Todd A. 09:03:04 05/15/21 (0)
- RE: John Repaired These Problems! - rivervalley817 20:53:06 05/14/21 (2)
- RE: John Repaired These Problems! - thetubeguy1954 13:00:01 05/17/21 (1)
- RE: John Repaired These Problems! - rivervalley817 19:59:57 05/17/21 (0)
- RE: John Repaired These Problems! - kyle 06:55:18 05/10/21 (2)
- RE: Here we go..... - deafbykhorns 13:00:53 05/10/21 (1)
- RE: Here we go..... - kyle 14:28:52 05/10/21 (0)