... This probably doesn't answer your question,but I once had a troubleshooting call for flickering lights,and after literally racking my brain trying to find out what was causing it,found it to be an ordinary ink-jet printer,..that as the toner heaters were cycling on and off,... thus went the flickering,...I timed it down to the seconds.. every 24 seconds on the nose.. I unplugged it and the phenomenemenen stopped.. fancy that!! It was hard telling the H.O. that her annoying,flickering lights were caused by a puny printer...
Russ
