3 Oct
2007
3 Oct
'07
6:31 a.m.
Zane,
After erasing thousands of eproms, I have not experienced a maximum ttme.
You can try to erase them again. I personally have left eproms under an
eraser for days, with no ill effects on the eproms.
If another tour under the eraser doesn't work, then you have two bad eproms.
Over the years, I made a living replacing defective eproms on telecom
equipment.
If they do erase, mark them, because my experience tells me they will fail
when trying to reprogram. Or they would be a good starting point for board
failure troubleshooting and repair.
phil