S.E.X. Failed Resistance Check

alecksbee · 510

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Offline Paul Birkeland

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Reply #15 on: November 27, 2024, 09:29:55 AM
That is the correct reading for that terminal with no tubes installed if your meter is able to ignore the big capacitor there.

Paul "PB" Birkeland

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Offline alecksbee

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Reply #16 on: November 27, 2024, 11:12:12 AM
Quote from: Paul Birkeland on November 27, 2024, 09:29:55 AM
That is the correct reading for that terminal with no tubes installed if your meter is able to ignore the big capacitor there.

Noted, so would it be safe to assume all of the terminals that read like that are good to go? Also, does the slight resistance reading for T15 raise any concerns?


Offline Paul Birkeland

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Reply #17 on: November 28, 2024, 06:32:57 AM
You can tighten the screws a little bit, but 2 Ohms is plenty close to 0 for these purposes.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline alecksbee

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Reply #18 on: November 28, 2024, 10:07:41 AM
Quote from: Paul Birkeland on November 28, 2024, 06:32:57 AM
You can tighten the screws a little bit, but 2 Ohms is plenty close to 0 for these purposes.

Sounds good, thank you so much for your help Paul, I really appreciate it.


Offline jdm

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Reply #19 on: November 28, 2024, 11:00:08 AM
Are those probes connected to the meter properly for measuring R's?  Not familiar with that meter.


Offline Paul Birkeland

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Reply #20 on: November 28, 2024, 11:20:51 AM
You are correct, the probes aren't in the right holes.  the "A" hole is only for measuring current. 

Thankfully the shunt that's present wont throw off the DC resistance readings, but it would still be a good idea not to have that in there (and you could make some fun sparks if you measured DC voltages and accidentally had the meter probes set up to read current).

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline alecksbee

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Reply #21 on: November 28, 2024, 11:25:47 AM
Quote from: Paul Birkeland on November 28, 2024, 11:20:51 AM
You are correct, the probes aren't in the right holes.  the "A" hole is only for measuring current. 

Thankfully the shunt that's present wont throw off the DC resistance readings, but it would still be a good idea not to have that in there (and you could make some fun sparks if you measured DC voltages and accidentally had the meter probes set up to read current).
Quote from: jdm on November 28, 2024, 11:00:08 AM
Are those probes connected to the meter properly for measuring R's?  Not familiar with that meter.

Good catch, thanks guys


Offline alecksbee

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Reply #22 on: November 28, 2024, 12:02:18 PM
I was able to sneak away from the family and do some voltage checks, certainly at a good time now that I won't blow up my new multimeter thanks to jdm! Everything looked well within range, and I'm currently pumping out some tunes as I type this! For reference:

T2: 77.4V
T3: 17.5V
T4: .005V
T5: 0V
T6: 382V
T7: 399V
T10: 378V
T16: 79.7V
T17: 16.7V
T18: .0009V
T19: 0V
T20: 383V
T21: 400V
T24: 380V
H2/H5: 3.28V/3.28V
H4/H7: 3.09V/3.07V


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