Just purchased a Kenwood VT-181 ac millivolt meter and it is working perfectly.
The only thing which is a little bit annoying me, is the litte offset between the input voltage attenuator scale
and its rotary knob. I want to correct it by taking that knob of the shaft and re-adjust it.
But: how do I take that knob from the potmeter shaft? I first tried to see if I could remove a disk on the knob
to get access to the screw but I failed. What is the way to do it here without damaging the knob?
Looking into the VT-181 manual did not show anything on this matter.
The only thing which is a little bit annoying me, is the litte offset between the input voltage attenuator scale
and its rotary knob. I want to correct it by taking that knob of the shaft and re-adjust it.
But: how do I take that knob from the potmeter shaft? I first tried to see if I could remove a disk on the knob
to get access to the screw but I failed. What is the way to do it here without damaging the knob?
Looking into the VT-181 manual did not show anything on this matter.
How much is this offset? Does it impede operation? If not, I would take a deep breath and try to relax and not worry about it.
You can try pulling the knob. With some luck it's a splined shaft and, if so, you can just put the knob back on rotated by one notch. With less luck it'll be a D-shaped shaft. In that case you'll be stuck with the offset.
If the knob doesn't move when you pull on it, I'd look to see if there's a setscrew. Loosen the screw, rotate the knob to your liking, tighten the screw.
Another common way of affixing knobs is with a claw-like thing that's internal to the knob. See if the front of the knob is a cap that can be pried off. If so, you'll likely find a hex nut under it that you loosen. You'll then have to pull the knob a bit, turn it to your liking, and tighten the hex nut.
Tom
You can try pulling the knob. With some luck it's a splined shaft and, if so, you can just put the knob back on rotated by one notch. With less luck it'll be a D-shaped shaft. In that case you'll be stuck with the offset.
If the knob doesn't move when you pull on it, I'd look to see if there's a setscrew. Loosen the screw, rotate the knob to your liking, tighten the screw.
Another common way of affixing knobs is with a claw-like thing that's internal to the knob. See if the front of the knob is a cap that can be pried off. If so, you'll likely find a hex nut under it that you loosen. You'll then have to pull the knob a bit, turn it to your liking, and tighten the hex nut.
Tom
I found some knob examples for you.
Splined shaft:
D-shaped shaft:
That claw thing I mumbled about. This one is attached with a screw that's hidden under a cap, but I've seen hex nuts used in that spot too.
Tom
Splined shaft:
D-shaped shaft:
That claw thing I mumbled about. This one is attached with a screw that's hidden under a cap, but I've seen hex nuts used in that spot too.
Tom
"See if the front of the knob is a cap that can be pried off"
That is what I described above and highlighted is bold type, but could not find the correct expression for "cap" so I wrote "disk".
Reading your advise to simply try to pull on the knob was the solution!
And then I simply did a re-adjustment, then pushed it on the shaft again.Problem solved!
Thanks a lot with displaying those pictures, learned something!
Joe.