[sdiy] Siel Mono too out of tune to adjust

[Andre Majorel]

On 2008-08-22 22:56 +0200, Andre Majorel wrote:

> The tuning on my Siel Mono has drifted so much that it cannot be
> fixed with the fine tune tab below the joystick any more.
> 
> The corresponding preset, Pc4, is already fully anti-clockwise so
> it cannot be adjusted that way either.
> 
>   http://www.teaser.fr/~amajorel/mono/schematics/contacts_1.png

Solved (finally). There is a tiny Phillips screw on the joystick
assembly that clamps the shaft of the pot. Loosen it, put
everything in neutral position, turn the shaft until the Mono is
in tune, tighten down the screw and you're done. On mine, that's
when the voltage on pin 6 of ICc4 is about +1.21 V.

So it probably wasn't the aging of the components, just a
mechanical problem.

-- 
André Majorel http://www.teaser.fr/~amajorel/