It's safe, much safer than not doing it. Lots of times. I connect the croc clip directly to the aquadag connection, usually an uninsulated wire or spring stretched across the back of the tube, this is the other end of the capacitor formed by the tube. You may not hear any discharge, there may be none, but poke the end of the screwdriver into the hole that the HT cap clips into and keep it there until you lift the cap and visually confirm that it has connected. I did a load of scrap monitors like this recently and the only ones that had any residual charge were the ones that I'd powered that day to see if they were worth saving. Lee. .. ___________________________________________________________ Yahoo! Messenger - NEW crystal clear PC to PC calling worldwide with voicemail http://uk.messenger.yahoo.com