Tjaart, for more `geek fun', replace that `energy hog' ballast with a solid state unit ;-) There has been a lot of amusing, to say the least, suggestions for erasing EPROM devices. I still think the Dataerase II is the best buy for both engineering prototypes and hobbyist. A few years ago I called them about ordering a replacement UV tube should mine fail. He laughed, saying it's cheaper to send it back and they will fix it for $12 including shipping. He went on to say, the tubes rarely fail. I can back that up with years of use and `abuse'. It costs less than $50. "Arc welders", heh, heh, `gawd'... ;-) - Tom >I've been using a 6W Philips UVB tube for about 2 years. The tube cost >about >$8.5 and the ballast & starter cost about $4.5 It erases a PIC in under >3 >minutes. Like you said - making your own is more fun. (and us geeks need >all >the fun we need) > >-- >Friendly Regards > >Tjaart van der Walt