[sdiy] wonky JX3p

[Senso]

Indeed, the JX-3P has no factory reset.
There are two OS chips possible. It either has a 2764 Eprom or a a 
MASK ROM labeled TMM2356P-624.

Senso

>A friend of mine asked me to look at his JX3p. Initially it supposedly
>only needed some keys cleaned but by the time he got it here it clearly
>had some other issues.
>
>When I turn it on all the lights but the LFO turn on and stay red. I
>checked fuses and reset the cables so far but haven't gotten into anything
>else.
>
>Has anyone seen this symptom before? Any suggestions on what could be
>going wrong or things to look at to try and fix it?
>
>I did some poking around and apparently there is no hard reset on a JX3p.
>There is mention of a few different ROM versions but on opening it up I
>didn't see anything that popped out as a specific OS ROM.
>
>Any/all help appreciated.
>
>THanks
>

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