Tube DIY Asylum

RE: Did you pull one leg of the resistor before measuring them? (n/t)

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Sidewinder

A

In Reply to: RE: Did you pull one leg of the resistor before measuring them? (n/t) posted by FenderLover on July 03, 2015 at 18:14:20

No, I didn't. The bad resistor was open, but after installing the new 210k resistor, both channel's plate resistor measure the same-about 210k ohms. I've been playing music through this amp for about 3 hours now and everything seems to be fine. So, should I leave it as is or change the resistors to 100k as indicated in the color code and schematic?
David

Follow Ups:

grid-leak resistor - FenderLover 00:57:04 07/04/15 (2)
I'd leave the resistance value at whatever was in the amp --- as long as the amp was working well. Value of this resistor effects the bias of the tube. And the overall quality and balance of the music.

Edits: 07/04/15
- RE: grid-leak resistor - Sidewinder 01:26:49 07/04/15 (1)
  Thanks. I think I'll take your advice and leave it as is. It's been running for about 10 hours now and it still sounds good. Any thoughts on the use of a slow-blow fuse instead of the fast acting one?
  Regards,
  David
  - fuses - FenderLover 07:45:33 07/04/15 (0)
    I was kinda puzzled at the manufacturer's use of fast-blow fuse. Tube amps are notorious for blowing out fast-blows, esp on cold startups.
    
    You should email them, to be sure that it is safe to go to Slo-blo.

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