Re: Dead DX7 Mark I - Repair questions -- Help!

"[email protected] [YamahaDX]" <[email protected]> 30 Jan 2019 03:50:32 +0000
Newsgroups gmane.music.equipment.yamaha-dx
Message-ID <[email protected]>
Hi again - As this thread appears to have gone a bit off topic (in a fun way, no doubt), please forgive me in advance for reposting here -- as I'm afraid my newer questions may have gotten buried at this point. Thanks again!  

 - Seth 

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 1) Which EPROM size should I order? I will already have an extra 27C256 on-hand, as I need that for my Hammond XB-2.

 
2) Which particular SRAM should I order?
 
3) Assuming I figure out to burn EPROMs, which version should I burn? SER-7? Or another version from the forum here (v1.8, v1.9?) I couldn't figure out what's different about each. I read about active sensing, and it would be great to shut that off.


 4) The key thing that I liked about E! was it gave me full 0-127 (not 0-99) per MIDI; will any of the newer ROMs give me that MIDI standard?
 

 5) Assuming I get to the point where I'm ready to format (either via E! or as stock), are there any instructions of how to do so via MIDI SysEx as I don't have a ROM cartridge on-hand? Worried that will be a major road block.
 

 Thanks again, everyone! I'll keep you all posted as to how things go.
 

 - Seth