Tuning Pitch Circuits

alaskamusic · Post by **alaskamusic** » Mon Mar 27, 2006 9:14 pm

I've had my Etherwave for a couple of months. The variation in humidity here (presumably) has made it necessary for me to adjust the pitch circuits.
I have to admit that, after removing all of the screws on the body of the unit,
I can't get it apart. Before I go prying any harder on the body, is there something more I need to disconnect that I've missed?

Maybe is just the finish that's sticking things up...

Thanks for your attention

WKR

Hutschi · Post by **Hutschi** » Wed Mar 29, 2006 9:26 am

If you have the same type as me, it is only necessary to remove the screws in the front and the back part of the top case (wooden covering).

But: you need special tools (a special screw driver) and may be you should have a manual to adjust the theremin. Otherwise, you make the things worse.

When I built my Theremin from a kit, I painted the case. After this, it did not work properly until the case was totally dry.

May be, adjusting the circuits may help you.

May be a radio engineer may halp you. Or, if you do not have the screw driver, you could ask the moog office. In my theremin kit, there was one.

Do not try a usual. It is from metal and will deadjust the parts by its presence.

alaskamusic · Post by **alaskamusic** » Wed Mar 29, 2006 2:08 pm

[quote="Hutschi"...it is only necessary to remove the screws in the front and the back part of the top case (wooden covering).

But: you need special tools (a special screw driver) and may be you should have a manual to adjust the theremin. Otherwise, you make the things worse.

When I built my Theremin from a kit, I painted the case. After this, it did not work properly until the case was totally dry.

May be, adjusting the circuits may help you.
[/quote]

Thanks. I've removed all of the described screws, so there's probably just a bit of sticky varnish to undo. I do have the manual and I had the plastic hexhead (octahead?) tool, but I managed to break it on another application.
Radio Shack should be open soon...

mondoflorida · Post by **mondoflorida** » Sun May 14, 2006 6:08 pm

I have the same problem. I have removed the four screws and the top will not budge. I've ran paper around the seams and have discover that something is still there holding the wood together where the screws had been. WTF?!

Hutschi · Post by **Hutschi** » Wed May 17, 2006 4:12 am

Hi,

did you remove the plugs before opening?

I checked the construction again.

In the bottom of the front board and the back board, there are screws, connecting them with the upper board. They are long, and you can remove them. I do not know exactly, where they used glue, because I have the kit and build my own myself.

Additionally, details may be other than in the kit, and there were several versions.

I could send pictures, but not in the forum here.

Best regards
Bernd

mondoflorida · Post by **mondoflorida** » Thu May 18, 2006 9:40 pm

It turns out that when they tightened the four screws that connect the top part of the cabinet, the threaded metal 'mollies' came out of the base just enough to prevent the top from coming off as it should normally. I use a couple butter knives to pry the damn thing apart, HA HA! No glue or dried paint to speak of. No problems with construction since. Except for trying to tune the thing while dealing with the resonance change once the cabinet was put back together. Moog technician Amos mentioned something about using a cabinet with holes drilled in the top. So, being that I had gigs lined up... I drilled holes in the top of my theremin to get access to L5 and L6. A simple fix and I am back in action!
I'd like to thank the folks at moog for responding so quickly to my panicky emails!!!