Dlsmith
Member
Just got a EPROM eraser from China. I have several Intel's 2716 that just won't erase completely. I was able to erase some TI's 2516s. Has anyone else every had this problem?
Thanks...
Thanks...
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Just got a EPROM eraser from China. I have several Intel's 2716 that just won't erase completely. I was able to erase some TI's 2516s. Has anyone else every had this problem?
Thanks...
Just got a EPROM eraser from China. I have several Intel's 2716 that just won't erase completely. I was able to erase some TI's 2516s. Has anyone else every had this problem?
Thanks...
I have the same problem with older EPROMS. They are probably 35+ years
old and don't last forever
JD
Just got a EPROM eraser from China. I have several Intel's 2716 that just won't erase completely. I was able to erase some TI's 2516s. Has anyone else every had this problem?
Thanks...
I recently ditched it and bought a used Spectroline on ebay. It has two bulbs, so moar power. Haven't had a problem since.
I also bought one of the ebay chinese erasers. Instead they shipped me a 50 cent plastic bottle. Needless to say - the plastic bottle doesn't erase EPROMs. They wanted me to send bottle back before they would ship out the eraser. No way - would cost $9 to ship. Had to go thru paypal and to get my money back.
If you erase them too long that will also kill them.
I believe that is a popular myth. It's the programming process, the charging of the internal caps, that causes stress on the IC. The chips have a finite life span specified as a number of programming cycles. Minimum erasure times are specified but there's no maximum limit on the UV exposure. I once had a strong UV erasure box that I loaded with more than 20 chips at once and the mechanical timer stuck so it never shut off. I forgot to check it and left it there running for a couple of weeks. All the chips came out blank and programmed afterward just fine. I've been programming and UV erasing all sorts of chips since about 1988 to present and I've never seen an instance of over-erasing causing failure. People just assume that because it won't become blank that it was the UV that caused the problem. It wasn't. It was the last programming cycle.
Bill B.
Agreed.
Sometimes you can program one with a stuck bit with all zeros then erase it and use it without problems. If it'll erase after doing the all zeros it will program just fine.