Hello. I was curious on how the content of an UV-eraseable EPROM chip degrade when it's being erased. So, i put a picture into a chip from a TV test signal generator (M27C512), powered it up, and put an UV erasing lamp next to it, expecting pixels to go pop.... pop... pop pop popopopopop or something. Instead, nothing happens. The lamp normally erases this chip in 10 seconds, yet in as much as 30 seconds i waited not a single pixel disappeared. Granted, the distance is a bit higher that usual (things in the way to put it flush against the chip), so intensity will be less, but can it be so much less than not a single pixel disappears? Does the power being applied neutralize the erasing somehow? If i pull the chip out and put it under the lamp for a second, it shows lines of half-erased pixels. Also, is it harmful in any way to the surrounding electronics - like, would there be any voltage spikes from photons charging up the bits that can propagate outside, or erased bits latching up in current draining states, or etc?