> From: Paul Kavicky
>
> I’ve recently purchased an eprom programmer with the intent
> to burn new chips for my Chroma Polaris. Is a Hitachi
> HN27C64G-15 one that works? If not please advise which to
> get. Mine has the common version 5 chips in it now, but since
> it’s opened up for troubleshooting (due to it locking up) I
> thought about burning a version 9 set instead that I was sure
> didn’t have bitrot. Thanks for any advice, I’m trying to
> become better skilled at taking care of my vintage synths.

There's no reason not to burn the version 11 that's on the rhodeschroma.com site.

See what part number your EPROMs are. If they're not listed in the burner software, you can look them up on the web to see what programming voltage they need, and choose an EPROM type that uses the same voltage. That's the most important variable--you don't want to whack a 12V EPROM with 25V.

--

Ciao, Paul D. DeRocco
Paul mailto:pderocco@...