Re: Any IIe hardware hackers?

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

Wow!  Let me post it one more time.

Odd.  Wonder why it stuttered?


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

"Henry" <apl2research@comcast.net> wrote in message 
Vu2dnUIczthRy3XeRVn-oA@comcast.com">news:Vu2dnUIczthRy3XeRVn-oA@comcast.com...
> 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!
>>
>
>
>