Integration - need help with voltage [resolved]

Kris · 10746

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Offline Kris

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on: September 07, 2021, 05:30:34 AM
Hi,

I finally installed Integration upgrade and all voltages after shunt regulator were on the spot.
After C4S install though, I got 106VDC on terminal 2 (should be 65-90VDC). Other voltages on terminal 18, 26 and 31 are perfect. Also, two LEDs on A side of C4S board close to A socket don't lit.
Please help.


Thank you,
Kris
« Last Edit: September 09, 2021, 12:47:20 AM by Kris »


Offline Paul Birkeland

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Reply #1 on: September 07, 2021, 05:46:13 AM
If you swap the tubes, does that high voltage move to the other side of your Reduction?

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Kris

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Reply #2 on: September 07, 2021, 06:13:06 AM
Yes, it does. Thank you Paul. I guess I shouldn't be using this tube anymore.
Off to ebay then.

Many thanks again,
Kris


Offline Paul Birkeland

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Reply #3 on: September 07, 2021, 06:20:53 AM
If the tube is super new, it can help to let it run for a few days to cook in.

We have found especially with Russian tubes, even brand new out of the box ones, that the plate voltage in a circuit like the Reduction or even the Crack will start out pretty high and not settle to proper levels until roughly 50-100 hours of use.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Kris

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Reply #4 on: September 07, 2021, 06:28:54 AM
I had this tube in my lightly used stock reduction for about two years, so I guess it's just going bed.


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