Alex Holden wrote:

> I have an ordinary 8W eraser. Do you think it would recover a 16c74/JW
> device if I left it in for long enough (I think I did try it for about two
> hours before giving up and throwing it in a drawer).
>
Gawd, this thread again.  :-)

Mine is 14W.  I've erased _many_ protected 16C74 and 74A JWs without a
problem.  If programmed with a PICStart Plus, 1 to 2 hours is about
right.  If programmed with a ProMate II, it can take significantly
longer.

--Matt