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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Re: 7189s in Dynaco ST-35 - Ouch! posted by steven oda on July 21, 2002 at 17:08:49:
Hi SteveThanks for the information. The light bulb idea is a good one which I will definately use. My Dad was trained as an electrican in the 30s and I remember him using a similar trick to test circuits.
A couple of things about the Dynaco which don't seem to fit in with your post - The St-35, I think, is ss rectified - correct me if I'm wrong. The tube complement is 4 - 6BQ5s and 2 - 12DW7s (7247). So can I just go directly to the lightbulb stage.
I don't mind doing live Voltage checks but I am not familiar enough with this circuit to know which are the A+ B+ C+ and D+ lines. Again I have only played with the foreplay so know the B+ circuit is the power circuit but beyond that I'm lost.
Any advice would be welcome
thanks
Bryon
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Follow Ups
- Re: 7189s in Dynaco ST-35 - Ouch! - Bryon 17:56:38 07/21/02 (1)
- Schematic - steven oda 18:16:55 07/21/02 (0)
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