Julian Wolfe wrote: Check the capacitor and diode on the video board first. They often fry. Bill

Well, you were right. Something did blow on the VT100 video board, and in a bad way. It looks very much like it was that diode you speak of, cause there's a huge burnmark on the board at the contact points of the diode. If that's not an "I died" indicator, I don't know what is. Can anyone tell me what diode to buy to replace it? I'm thinking of getting a replacement video board, and then replacing the diode on that, just in case it took something else with it. The whole "y" trace has a brownmark around it that the diode was connected to, and that has a big cap next to it. All in all, this has been a lot easier than I thought to work on. Thanks for all your help, Tony, and everyone else too! -----Original Message----- From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Tony Duell Sent: Saturday, November 05, 2005 7:03 PM To: cctalk at classiccmp.org Subject: Re: Discharging a VT100 CRT The PSU rarely fails, and if it does, it's one of the nicest SMPSUs to repair since all the control circuitry is on the 'isolated side', the drive to the chopper transistor being transformer coupled. Very often one of the diodes on the vidoe board fails -- one of the diodes that rectifies the output from the flyback transformer to produce the CRT voltages. This is often the reason that the flyback fails in the first place. I would look at those first. -tony