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Re: Cooked something in my Platinum IIe

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a2retro wrote:
> I very stupidly tried to attach on of my logic probe leads to the R/W
> line on a card in my platinum IIe while it was still powered on and I
> believe I crossed that signal with the -12v line above it.
> 
> When I turn on the IIe I now get a constant beep through the speaker
> and video is filled with a constant character (not sure of the value
> but it looks like a block but not solid, made from dots).
> 
> From another IIe, I tried swapping out all available socketed chips
> but it did not resolve the problem. There are still quite a few I
> would not be able to swap out without desoldering them.
> 
> Does anyone know the IIe well enough to determine which chip, cap or
> resister may be fried?

If I'm not mistaken, the DRAM chips in the Platinum //e are not
socketed.

It seems reasonable that one or more DRAM chips are fried...

-michael

NadaNet 3.1 for Apple II parallel computing!
Home page:  http://home.comcast.net/~mjmahon/

"The wastebasket is our most important design
tool--and it's seriously underused."

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Thread

Cooked something in my Platinum IIe a2retro <a2retrosystems@gmail.com> - 2011-04-05 10:09 -0700
  Re: Cooked something in my Platinum IIe "Michael J. Mahon" <mjmahon@aol.com> - 2011-04-05 14:59 -0700
  Re: Cooked something in my Platinum IIe Geoff Body <gbody4@bigpond.com> - 2011-04-05 21:51 -0700
    Re: Cooked something in my Platinum IIe a2retro <a2retrosystems@gmail.com> - 2011-04-05 23:26 -0700
  Re: Cooked something in my Platinum IIe rich12345 <aiiadict@gmail.com> - 2011-04-06 08:01 -0700

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