[sdiy] Ensoniq ESQ-1 Serving Questions

[dragons]

Hi,
I think it would be worth upgrading to the latest version of eproms, ( 
is that 3.5 ? ) but I don't know if that would solve the problems you 
mention.
have you disturbed any of the wiring / connectors when you changed the 
battery ?
it should be possible to check the diodes on the keyboard matrix by 
using a dvm on diode check.
hope you can get things fixed.
regards Peter

Kyle Stephens wrote:
> I got an Ensoniq ESQ-1 recently (thanks again Tim!). Thusfar it does not work however. I was sold it under that premise, so I knew what I was getting into.
> 
> When I turn it on, it says the memory battery's low and I should replace it. I checked it with my meter, and it was indeed low, and right now the keyboard's in front of me a fresh battery.
> 
> It still does not get past a screen telling me the name, make, model and OS, as it did before replacing the battery even (even with a low battery it's supposed to still function). No amount of button pushing or doing the system reset button combo press has any effect.
> 
> Might replacing the EPROMs solve my issues? I can't think of anything else.
> 
> 
> Another quirk is a small set of keys are dead for the synth engine, but work with the MIDI according to Tim. The 3rd G# to the 4th D# are the offending keys. Tim reckoned one of the diodes in the scanning matrix are dead, but how would one go about checking that?
> 
> I've the keyboard assembly in front of me now, and it's rather clever imo - there's two buss wires for measuring the attack time, as actuated by a small length of fine spring attached to each key, with the other end soldiered to the diode and so on.
> 
> 
> _Kyle
> 
> 
>       
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