Blankety blank blank.

[Sandy]

I had this same problem with some older 2716's and 2732, they would not
erase. I left them in for hours! I asked this same question, Is it a UVA vs
UVB problem? I think that the lowcost dataerase mentioned something about
this, but can't exactly remember.  The solution to the problem was to get a
bunch of 2817's and shine it on.  Check your programmer for compatibility,
mine needed an adapter board.

Sandy

At 09:51 PM 8/12/98 -0600, you wrote:
>Well, since I've read that an ultra violet lamp can erase
>eproms, I tried it.  Set a timer for 3 mins with my lamp on
>the chip,checked it with the burner, not blank.  5 mins, 10
>mins, 20 mins; not blank.  Got to "The heck with it" and
>left it on for an hour (with six chips under it), still not
>blank.  What gives?
>
>Lamp reads "UV-A Ultra Violet" and "BLE-270W". Wrong
>frequency?  Knowing how well my CSH fits, I made sure to
>take the stickers off the little window.  Left one in the
>sunlight for a (long) while, and it was blank when I
>checked.  
>
>Yes, I know this is crude.  Yes, I know an eraser is the
>proper way.  Yes I'm going to buy one.  In the mean time,
>why won't these chips erase?
>
>Shannen
>