<snip>
>
> >Recently acquired a 7200/90 that doesn't want to work.
> All internal
> >cables, connections and cords appear fine, but I get
> nothing after the
> >startup chime - no video signal, not even a flicker on the monitor.
> >Power supply seems to be powering everything up, but
> nothing happens.
> >Changed PRAM battery, just in case - nothing. Swapped out
> logic board -
> >no joy. The unit doesn't even seem to be attempting to
> find a valid
> >system folder to load: Disk Tools floppy inserted at
> startup - nothing;
> >System Software CD-ROM and four-finger salute - the same.
> RAM DIMMs
> >(two 16s from my 8600) are good.
<\snip>
the problem might be your Dimms, the 8600 uses EDO the 7200 uses FPM,
see:
http://www.mactoolbox.com/guides/ramfaq/ram.html
the following is a clip from their page:
"There are two types of DIMMs. Standard and DIMMs with the words EDO
in front. It stands for Extended Data Output and has a 5% to 25%
faster access/seek time than standard DIMMs. BUT and VERY importantly
some PowerPC Mac's CAN�T use them. For instance the most notorious is
the 7200, if you use EDO DIMMs you do permanent damage to the main
CPU. PLEASE check with you Apple local reseller and let them advise
you on the RAM upgrade is you IN ANY WAY UNSURE about the memory chips
needed, that�s their job."
Hope this is of some help.
Ben
--
PCI-PowerMacs is sponsored by <http://lowendmac.com/> and...
Small Dog Electronics http://www.smalldog.com | Refurbished Drives |
- Epson Stylus Color 740 Printers refurbished $79 | & CDRWs on Sale! |
Save on Mac software -- Shop Software Outlet.com
<http://lowendmac.com/ad/software.outlet.html>
Star Wars Complete Collection on Video CD - $32.97
Back to the Future Collection on Video CD - $15.97
EurekaMovies.com <http://lowendmac.com/ad/eureka.html>
- - - - -
PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml>
Send list messages to: <mailto:[EMAIL PROTECTED]>
To unsubscribe, email: <mailto:[EMAIL PROTECTED]>
For digest mode, email: <mailto:[EMAIL PROTECTED]>
Subscription questions: <mailto:[EMAIL PROTECTED]>
Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/>
Using a Macintosh? Get free email and more at Applelinks!
<http://www.applelinks.com>
