EPROM Eraser not erasing New EPROM

[Shannen Durphey]

93 Formula wrote:
> 
> And the saga (of the dim-whitted newbie) continues...
> 
> Any other ideas?  I pulled the factory sticker off and lined up the hole in
> the eprom with a whole in the dataerase, and set the timer on max (24
> minutes) 3 times (It wont run without the timer) It STILL hasnt erased it
> according to the pocket programmer. Damn, could it be that these newer GM
> chips are write once only? Or could I try something else. If nobody has any
> other ideas, I may just have to try to erase my original 1993 chip instead.
> They shouldnt call these memcals EPROMs if you cant write to them.
> Jeff.
I've done enough chips from 92/93 cars to belive you're doing
something wrong.  I have a piece of tape over the first hole in the
eraser.  I set the chip in the second hole because it's larger.  My
timer's set to 7 mins.  Ive found it takes 2 or 3 times at this
setting to do the job, and I think it takes less time if I turn the
memcal around once during the process.  Have you erased chips
successfully before?  Maybe the problem's somewhere else?  Are you
picking the right eprom type in the PP software?
Shannen
> 
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