[sdiy] AceTone Rhythm Ace Full Auto Schematics

Oren Leavitt obl64 at ix.netcom.com
Fri Dec 20 19:56:42 CET 2013



On 12/20/2013 5:39 AM, Matthias Herrmann wrote:
> hi all,
>
> i got one off ebay and it needs quite a bit of repair, i fear.
>
> there is an annoying hum from the mains everywhere. i already earthed the chassis (safety), and i
> checked the huge filter cap. for more work i needed the schematics - the power scheme of this beast
> drives me crazy, and it looks like someone tried a little bit on this machine before me...
>
> i appreciated any help, you might want to contact me offline, since this is not strictly synth DIY.
>
> cheers,
> matthias herrmann
>
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>

Nice - I'd reflow/reheat all of the solder joints on both boards. The 
chassis is flimsy and causes the large pcb boards to flex if the unit is 
moved around. 40+ years of being bumped around is bound to loosen some 
stuff.
I have an FR-1 - A reflow, and a few replaced electrolytic caps worked 
wonders.

Enjoy!

- Oren



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