New To Shindo

[chriskeating]

Jerome,

Great tip.

I'll check the tubes later.

Thanks,

[chriskeating]

Originally Posted by pitchperfect

Chris,

The amp should not make that buzz/noise when you touch the volume control.

The advice you received from other members is sound, regarding the interconnects and such. Shindo or A23 interconnects are designed to work within the parameters of Shindos grounding techniques.

But in this case, it sounds like an issue with the volume potentiometer grounding to the chassis Most likely it had taken a hit during shipping and loosened it ever so slightly. Snugging the nut that holds the pot on - ever so slightly - causes the lock washer to bite into the paint for better chassis grounding. It doesn't take much, just a gentle snug.

Remove the knobs and front acrylic faceplate. This will allow access to the volume potentiometers nut, which you can tighten down. There is a 'toothed' washed under this nut that you are tightening down, which cause grounding to the metal chassis under the paint. Use the appropriate size nut driver or wrench to do so. I recommend loosening it a bit, then tighten it down a slightly harder than it was. This will better ground the potentiometer/washer to the chassis.

This is worth a shot. PM me offline if you need further assistance.

-M

** PS. DO NOT over tighten, as you will damage the potentiometer. They are delicate. **

If this turns out to not solve the problem, the potentiometer is damaged and needs replacement.

HI Matt,

I think your diagnosis is correct in that I can sort of wiggle the volume control and the buzz either gets louder or goes away. I also can touch the buzzing control with one hand and then touch a ground wire with the other and the buzz disappears. Now I understand why simply hooking a ground wire to a chassis screw did not solve the problem.

I'm going to attempt to tighten the nut as you suggest. I see that that volume and input knobs have tiny holes that probably contain some sort of set screw. The holes are really tiny. Do you know if there is a tiny allen screw in there or some type of push pin retainer?

Thanks,

[NeilNZ]

It's a REALLY tiny grub screw in those Apetite knobs, like 3/64 or 5/64 or something.

[pitch perfect]

Originally Posted by chriskeating

HI Matt, I see that that volume and input knobs have tiny holes that probably contain some sort of set screw. The holes are really tiny. Do you know if there is a tiny allen screw in there or some type of push pin retainer?

Thanks,

A very tiny .89m hex key is required for those particular knobs... I use a Bondhus brand..

[chriskeating]

Thanks, I'll pick one up and carefully tighten the nut.