Re: Any IIe hardware hackers?

["Henry" <apl2research@comcast.net>]

Hello.

I can burn you a new PAL for the IIe or email you the JEDEC file if you want 
to burn one yourself.

Just email me or post a message here and let me know what you'd like to do. 
I may even have an IOU and MMU if you really want some extras.


Henry S. Courbis
www.GSE-Reactive.com
Apple II Series Legacy Hardware - Come take a look at what we have to offer!

"nonmaskable" <mikedl@comcast.net> wrote in message 
1139272957.035141.151460@o13g2000cwo.googlegroups.com">news:1139272957.035141.151460@o13g2000cwo.googlegroups.com...
> Hi.  I'm trying to repair a IIe mainboard.  This is my first time
> working with an Apple IIe, and the custom PAL, IOU, and MMU make fault
> tracing difficult for me since I don't have any known good substitues.
>>From looking with a scope, it looks as if the PAL is getting the main
> three clock inputs (14M, 7M, and 3.5M) fine, but not putting out VID7M.
> Am I right in assuming that this means that the PAL is bad, or is
> there another failure (e.g. the PAL control signals) that could explain
> it?  Since replacement PALs aren't around it would mean the end of the
> mainboard.
>
> Thanks!
>