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Old 12th Aug 2017, 12:03 am   #1
jay_oldstuff
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Join Date: Jan 2005
Location: Hyde, Greater Manchester, UK.
Posts: 1,074
Default EPROM eraser won't erase.

Ive put this hear as its computer related, and wasn't sure where else to put it.
I have one of those cheep chinease Eprom erasers (mains UV lamp in a box) and have used it for a few years now. I recentely got a number of used 27C64 eproms for a couple of projects i have in mind so tonight I tryed blanking a couple for a project, put them in set timer for 20 min. but still contain there data so gave them 30 min, still the same so grabbed a few from stock incase those i'd baught had gone bad, tried eraseing them but still the same. the lamp is lighting as you can see the light round the drawer but no erasure. has anyone else had this? can the lamps light but fail to emit UV?

Jay
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