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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: No, those suckers get really hot posted by vinnie2 on April 18, 2016 at 18:12:21:
Some variation is normal but shouldn't be drastic. Begin by drawing a really accurate schematic, make a photocopy for the second channel and then record the DC voltage to ground at each of the tube terminals, the power supply points, etc. It can really help to zoom in on a Problem. One possibility is that those silver mica caps leak, causing the 45 on that side to conduct way too much and then putting a big voltage across the tube's bias reaistor and frying the capacitor. Some voltage checks with a digital multi meter or vacuum tube volt meter will get it all sorted out. The grid oh the 45 should be 0VDC.
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- RE: No, those suckers get really hot - maxhifi 04/18/1620:00:35 04/18/16 (0)
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