Re: II+ beeps but then reacts very oddly

[Don Bruder <dakidd@sonic.net>]

In article <44faf257$0$26946$9b4e6d93@newsspool4.arcor-online.net>,
 Linards Ticmanis <ticmanis@gmx.de> wrote:

> Hello,
> 
> I've managed to halfway rescue my II+ from the realm of the dead, by
> replacing every 74XX chip I could easily get a hold of, and it's now in
> the realm of the undead it seems. The 74LS175 at board position B1 was
> the one that got it over the first threshold.
> 
> Specifically, it now does go "beep" when I turn it on, but the screen
> shows just an array of question marks (i.e. $FF bytes in screen memory,
> I believe), and it's not being cleared, doesn't display "APPLE ][", and
> no prompt appears. It does boot from a connected disk, though the
> drive's stepping sounds odd (too slow), the text display remains
> nonsensical (it seems to be showing some other memory area, not PAGE 2
> either), and the stuff that's visible on screen when the loaded program
> switches to graphics mode has only remote similarity to what should
> appear. Speaker sounds sound "wrong" in an odd way, like they're being
> played a bit too slowly or with some stuttering. Earlier or later the
> booted program will just reboot.
> 
> I can blindly type "GR", "HGR", "HGR2", or "TEXT", and I do get a
> reaction - but in HGR mode most of the screen doesn't get cleared, while
> in HGR2 mode most of it does get cleared, but some dots remain behind.
> In GR mode it's obviously switching to that mode but not clearing
> whatever memory area it's showing there.
> 
> This is certainly the oddest failure mode I've ever seen in an Apple.
> Any idea what might be going on?
> 
> (if you get this twice I'm sorry, it means that your news server doesn't
> honor cancels).
> 
> Thanks for any help,

Sounds like scragged RAM to me...

What happened? Did it take a lighting hit or something?

-- 
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