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Longespee · 3rd Mar 2023, 7:30 pm

Indeed the electrolytics on the osc and amp boards gave me the same feeling as all were fine and tested good ( I had so many probelms I can't remember exactly which it was), that said I replaced many of them only to find that they hadn't helped my problem, next to go were the transistors which still didn't help, I eventually found my bad cap was C2 1990pf on the amp board, rightly happy but frustrated I put the transistors back, I really wanted to put the electrolytics back!!! but didn't, I lifted many of the board resistors too all were perfect.

C8 I would definitely as it's a Hunt's, I think I put a Mustard in there.

I did find rotary contact on S4 was a problem and the wafer was riding under it because of a broken phenolic, that was a job lol. The more I think back this machine has been a big pain, but it ( when working ) does such a great job.

3rd Mar 2023, 7:30 pm	#50
Longespee Pentode Join Date: Jun 2009 Location: Leominster, Herefordshire, UK. Posts: 246	Re: AVO VCM 163 Meters Indeed the electrolytics on the osc and amp boards gave me the same feeling as all were fine and tested good ( I had so many probelms I can't remember exactly which it was), that said I replaced many of them only to find that they hadn't helped my problem, next to go were the transistors which still didn't help, I eventually found my bad cap was C2 1990pf on the amp board, rightly happy but frustrated I put the transistors back, I really wanted to put the electrolytics back!!! but didn't, I lifted many of the board resistors too all were perfect. C8 I would definitely as it's a Hunt's, I think I put a Mustard in there. I did find rotary contact on S4 was a problem and the wafer was riding under it because of a broken phenolic, that was a job lol. The more I think back this machine has been a big pain, but it ( when working ) does such a great job.