Tube Check

Toys4Boys · 3822

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Offline Toys4Boys

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on: September 26, 2023, 05:34:57 AM
The manual indicates that it can be difficult to see the EF86 tubes glow and I didn't when I tested the tubes as per the manual, pg. 44. I metered the plus/minus and it was 6.3V, if memory serves. I am working on the assumption that if the tubes are getting the proper voltage at this early stage that they are probably fine?


Offline Paul Birkeland

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Reply #1 on: September 26, 2023, 05:54:54 AM
If you measured the voltage at pins 4 and 5 on the EF86 socket and saw about 6V between them, that would be sufficient.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Toys4Boys

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Reply #2 on: September 26, 2023, 08:30:23 AM
Thank you Paul.


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