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N_Cook N_Cook is offline
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Default Fudge/kludging old style switch

On 19/11/2015 19:39, Gareth Magennis wrote:


"N_Cook" wrote in message ...

Ona 1983 Roland Juno 6 synth, so would like to keep original looking.
Easy to wire in some modern replacement.
One of those rotating arm , but slide switch action that used to be
common on amps and tapedecks of the 1970s. 3 position mode switch.
The arm that looks metal but is thin aluminium cylinder over plastic.
Broken away , and missing, from the internal rocking bit.
Switch action is good , but how to fit a shaft?
Cannot simple drill and tap/glue a shaft as there is a fixing/pivot rivet
that goes through that area.
I've sintride fine cone-rasped 4 undercut holes radial to this central
position. I intend 4 bend stiff wires and epoxy going in there , and a
thin walled aluminium pcb stand-off cylinder, that would normally take a
long bolt, slid over those 4 and then epoxied in aswell.
Anyone been here before, or better idea?





These Juno's are rapidly increasing in value. At present £800+.
Funnily enough I got one in today.

Had one a few weeks ago that had one shonky switch of the type you are
describing, but declined to attempt to fix it, as it still worked,
albeit in a very wobbly manner.
(I didn't fancy risking turning a wobbly working switch into a totally
useless one)

I did manage to repair a damaged slider by dismantling and judicious use
of epoxy, but the amount of work you are prepared to undertake is well
beyond my interests.

Good luck.



Gareth.


Another switch problem is the LFO trigger switch, it is conductive
rubber. As found and not working, about 400R. Got inside and turned the
active pad 90 degrees, now 100R. Hopefully on repowering that sw will
now work. Other problem was break at the socalled strain releif of the
mains cable