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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Re: Have you measured the voltages and do they match that marked on the schematic? nt posted by Ron Oehlert on March 5, 2007 at 14:42:49:
I finally figured out why I thought there were no voltages shown. I wasn't looking at the one posted here, I was looking at the one I used to build the phono pre. It must be an older version because it doesn't have the voltages on it. I just got through checking them and the 260 vdc going into the phono pre is right on, but the voltages at the plates are a little low. I got 138 instead of 145 on the first stage and 144 instead of 160 on the second stage. Still, that seems to be "in the ball park" as Joseph said, and I would think it should at least work. Same with the cathodes, they read 1.16 & 1.18, a little low but should still work. I also went back through the entire schematic and I can not find anything wrong. I also checked all the component values and they are correct. Danged if I know what is wrong!!
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Follow Ups
- Re: Have you measured the voltages and do they match that marked on the schematic? nt - Vinnie 15:45:20 03/05/07 (3)
- Break it down. - Stephen R 01:18:45 03/07/07 (2)
- Re: Break it down. - Vinnie 03:04:24 03/07/07 (1)
- Re: Signal tracing - Ron Oehlert 08:08:34 03/07/07 (0)
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