Re: Help diagnose dead //e?

[Wayne Stewart <waynejstewart@gmail.com>]

Your picture is exactly what you get if you have no processor
installed. You likely need a replacement 65C02 but you could check to
see if the Rocketchip isn't loose. Maybe it wasn't fully seated when
installed and has worked it's way loose.

On Jul 17, 6:01 pm, Brian Bernstein <brian.bernst...@gmail.com> wrote:
> I recently pulled my old Apple //e out of storage and the three shoe boxes of disks to archive data via ADT. Everything worked great until I left it running unattended for 3 hours. It looked frozen and Control-Reset wouldn't do anything.
>
> It seems like the machine was freezing up but is now frozen. After the first failure, I was able to turn off the machine for a bit and then it'd work for a bit, but then it'd freeze again. Sometimes I'd see the "Apple //e" boot banner but nothing, or just a blank screen. Sometimes I'd get to a prompt and it'd blink a while and then the cursor would just freeze. Now when I turn it on, I just get a strange pattern on the screen (see link)
>
> http://dronefone.com/nntp/dead2e.jpg
>
> Before I start pulling lots of things out, a few thoughts:
> 1. It was plugged in through the old Kensington System Saver. No reason to think it is failed, but this should protect against minor power spikes. It had this for years.
>
> 2. It has a 5MHz RocketChip accelerator (direct 65C02 replacement). It was on fast mode at the time. I don't think heat was ever an issue with this machine. However, perhaps it fried and the pattern is what a //e would do if it had no CPU installed?
>
> 3. It had all 8 (7+aux) slots populated. Removed a Micromodem ][ and a serial card and it didn't make a difference.
>
> 4. ADTpro was connected using a SSC clone (simply labeled "Serial //" but obviously has SSC ROM since "IN#2 / Ctrl-A" reports "APPLE SSC:"). This card has worked FINE for years, but even after removing it and dropping it into my IIgs it hasn't worked again.
>
> I'm thinking it is either the power supply or Rocketchip. Not wanting to swap parts out just yet, but I figure the screen shot would help.
>
> Any ideas? I really want to get my old friend working again!
>
> thanks!