EPROM Eraser not erasing New EPROM

[93 Formula]

I just bought a new eprom (in memcal carrier) for my 93 f-bod and read it in 
fine using the pocket programmer, but I cant seem to erase it. I am using 
the Datarase II EPROM eraser which I rigged so it would stay on with the 
cover off. I put the clear part of the eprom over the light and set the 
timer for the longest time 3 times and still I have no "FF's" appearing when 
I plug it in for the blank check in the pocket programmer. Am I missing 
something? The other side of my eprom has what appears to be the chip with 
the factory sticker on it, so I THINK I am putting the right side under the 
light. Could new eproms be NON programmable?
Jeff
Go.To/LilDemon
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