Bottlehead Forum
Bottlehead Kits => Crack => Topic started by: mjekot on September 02, 2015, 05:17:34 PM
-
As the title suggests, I have a roaming T-6 and T-10 on voltage check.
I bravely plugged in my amp tonight. The tubes powered up and glowed nicely. The little red LED's glowed too! So far, so good I thought.
All terminals seemed to check out OKAY with the exception of T-6 and T-10 - See below for my readings. T-21 might be a little high but within the 10-15% threshold
Terminal Voltage (VDC unless otherwise specified)
1, 75-90 78.4
2, 170 169.4
3, 0 0.1
4, 170 169.6
5, 75-90 78.1
6, 0 Roaming
7, 100 101.2
8, 0 .06
9, 100 104.0
10, 0 Roaming
11, 0 0.8
12, 0 0.1
13, 170 169.8
14, 0 0.2
15, 185 189.9
20, 0 0.5
21, 206 211.6
A1, 90 78.6
A2, 0 0.4
A4, 0 0.4
A5, 0 0.4
A6, 90 78.7
A7, 0 0.3
A9, 0 0.4
B1, 90 78.8
B2, 170 169.5
B3, 100 101.9
B4, 90 78.8
B5, 170 169.8
B6, 100 104.8
B7, 0 0.4
B8, 0 0.4
What should I be looking into??
Thank,
Mark
-
What does it roam between?
There might be a few mV of voltage (1mV is 0.001V), which isn't abnormal, and isn't anything to be concerned about.
-PB
-
Paul,
I rechecked this AM and got the same results.
The Roaming on T-6 was roughly between 31.0 and -7 mv
The Roaming on T-10 was roughly between 48.0 and -10 mv
The values changes very rapidly (say about 4x per second so it was difficult to be exact) and was not steady. Example - 18, 12, -8, 26. 16. 0, 14, -9
All other terminals hold steady where they should be.
I shot a video of the reading just so I had reference.
-
You are still way under a volt, there's no issue here.
-PB
-
Thanks for the reply and assurance Paul. It is good to have a second set of eyes. On to the next step!
Mark