The Workbench

Re: The usual broken wiper problem on the BM 1900

yachadm — Sat, 23 May 2009 14:54:38 GMT

Dave,

Can you post a picture of this, with dimensions and Ohmic value?

There is an old electronics shop here, which just put up for sale a whole bunch of NOS Ruwido slider pots.

Let's see if there's a match here.

Menahem

Re: The usual broken wiper problem on the BM 1900

Dillen — Sun, 03 May 2009 12:38:00 GMT

I haven't found any good replacements for those potentiometers.
My advice would be to give it another go, and use a better glue and/or clean better.
I've repaired countless and never saw an already glued one back here.
Clean everything, the brass parts should be rough'ened a bit using a glasshair brush or similar, and then
superglue it back together, leave overnight and put back together.
Use the real cyanoacrylate stuff, not the cheap tubes.

Martin

The usual broken wiper problem on the BM 1900

dave1900 — Sun, 03 May 2009 11:06:04 GMT

Hello everyone - what is the current state of play regarding the balance/bass/treble sliders on the 1900? Last time the sliders went wonky on my BM1900 I had to do that minute surgery of glueing all that parts back together, but alas the fault has returned and I don't fancy spending hours rebuiling the wiper/slider again.

Has anyone found a replacement part yet?

thanks