[sdiy] DX7 diagnostics help

[Bob Weigel]

Sounds like you just lost the backup battery and there are gibberish 
settings in memory.  You need to get the E! manual online.  I think 
there's a link to it on my website.  I've been through this but can't 
recall the buttons right now to get to enabling sysex etc.  Anway you 
should be able to just sysex a bank of sounds on when you get the memory 
protect switched off  and the sysex enabled. -Bob

mrmike wrote:

> I've got a DX-7IIfd with a Grey Matter E! card in it.  It hasn't been  
> used  in years, but was functioning correctly. I fired it up last 
> night, and it has a problem:
>
> It boots, and I get the E! v 1.20 message on the LCD. LEDs, etc. seem 
> to be ok.
> Problems:
>      I can't change patches, and the unit produces no sound (at least 
> with this patch).
>     Split mode button looks like it works (two patches appear in LCD)
>     There are some garbage characters at the end of each line in the LCD.
>     Turning the volume up just gives hiss.
>
> I'm not at all familiar with the E! card, so it could be straight user 
> error. I've found the manual online, but troubleshooting help is 
> sparse there.
>
> I haven't tested MIDI out.
>
> Anybody have any suggestions on how to go about fixing this? Should I 
> remove the E! card, or is there some way to reset it? Could this be a 
> battery issue?
>
> Thanks for any help!
>
> mrmike
>
>