The pc is doing something. I just occasionally check up on it's progress, make an adjustment on the process and continues... Is turning off the filament the same as turning down the brightness? I realise there are HV potential inside, not being equipped with the right trainning and with HV tools, I'd rather do things on the outside. Thanks for the replies so far. Robert F ----- Original Message ----- From: J.Feldhaar To: Sent: Thursday, August 09, 2001 12:10 PM Subject: Re: [EE]:Monitor Life > Hi Robert, > > a good (but cumbersome) solution is to turn the filament off. Switching > is dangerous 'cos it might be at HV potential. Could be done with an > optocoupler... > This way the CRT screen won't age because is it not shelled with > electrons. > > Greets > Jochen Feldhaar DH6FAZ > -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu