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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: More Info Provided! posted by Eli Duttman on December 24, 2016 at 08:10:13:
Yes, it does draw 750mA more current than the 5U4GB. I know what some here on AA do is to check the rectifier winding under load and assume that if there is >5V then they are OK. My own feeling is that if 750mA is a strain on the power transformer then that's not a very robust piece of equipment and not worth the thousands that it costs.I bought an infrared thermometer on Amazon for less than $20. Another test one can do is to use the infrared thermometer to check the temp of the power transformer with a 5U4GB after the unit is fully warmed up and then do the same with the 5AU4 to see if there is an appreciable difference.
In the end though, there is either something wrong with the amp if 5U4GBs rectifiers are failing or the user is using 5U4G or 274B rectifiers which can't handle the current.
Edits: 12/24/16
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Follow Ups
- RE: More Info Provided! - Palustris 11:09:10 12/24/16 (1)
- RE: More Info Provided! - Eli Duttman 11:28:59 12/24/16 (0)
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