Richard, Thanks for the follow-up. I sent the email to the aol address listed on the installation instructions, not the route66studios emial address - my bad. I've resent the email along with a related email on another matter regarding the order. Thanks for your attention to this matter. Jon --- In Ensoniq-VFX-SD@yahoogroups.com, "Rish" <rish@...> wrote: > > Jon > That does not sound like an EPROM issue but a bad display or diode on the PS, could be a bad set of EPROM's. > I can always supply you with a second set of EPROM's but I have not received any such Email from you as you have stated here. > > Richard at Route 66 > ----- Original Message ----- > From: jondl_2000 > To: Ensoniq-VFX-SD@yahoogroups.com > Sent: Tuesday, April 26, 2011 4:34 PM > Subject: [Ensoniq-VFX-SD] SD-1 EPROM Upgrade Questions > > > > I've recently attempted the OS 4.1 EPROM upgrade to my SD-1 having purchased the chips and sequencer diskette from Rt 66 Studio. > > The upgrade was unsuccessful and the SD-1 would only boot to a partially illuminated display that would slowly fade to dark... > > I attempted to fallback to the previously installed EPROMs only to have the same issue following power on. > > Having searched this lists archives, I found this thread from sometime ago: > > http://launch.groups.yahoo.com/group/Ensoniq-VFX-SD/message/2581 > > Since the description appeared to match the issue I'd encountered, I replaced both 2 Amp fuses (I have replacement 1.5 Amp fuses on order) and was able to restore the SD-1 using the previous EPROMs, but not the new EPROMs. > > I've double checked the provided installation instructions and feel certain I have the EPROMs installed correctly. I've posted a question to Route 66 Studios, but expect it may be some days before I receive a reply. When I have the new EPROMs installed and power on the unit - all I have is a dark display with no prompt to reinitialize the unit. > > Does anybody have suggestions as to what else I might try to affect a successful upgrade? > > I'm hesitant to make further attempts without a plan of action as I'm concerned the pins on either set of EPROM's will wear unnecessarily from too many installations and removals. > > Thanks in advance for any guidance you may have to offer. > > Regards, > > Jon >
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Re: SD-1 EPROM Upgrade Questions
2011-04-26 by jondl_2000
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