Recently I moved house and set up a new workbench. In order to "improve" the old one, I scrapped the old filament bulb bench light with a new fluorescent magnifier lamp as advertised by several suppliers. Whilst it works very well as a lamp, it causes havoc when used near sensitive electronic circuits due to its high RF radiation from the high frequency inverter that drives the tube. My advice is that if you have built something that seems to be behaving strangely, before you tear it to bits, turn off any fluoro lights you have on and try it again!! I am going back to incandescent bench lighting!!!