Yikes...I have one of those I was counting on using when I finish cleaning out the lab. A schematic would be good.
KJ On Sun, Jun 14, 2026 at 8:00 PM Robert Armstrong via cctalk < [email protected]> wrote: > Yeah – I don’t know much about the ELT320 technology, but if it’s really > an electroluminescent panel then it needs somewhere around 100V of AC to > light up the pixels. There’s a section on the lower left of the PCB that’s > clearly some kind of switching power supply; my guess is that’s a good > place to start. But a schematic would be really (really!) handy. > > > > Bob > > > > From: Glen Slick [mailto:[email protected]] > Sent: Sunday, June 14, 2026 3:55 PM > To: [email protected]; General Discussion: On-Topic and Off-Topic Posts > Subject: Re: [cctalk] Planar ELT320 Schematics? > > > > On Sun, Jun 14, 2026, 3:34 PM Robert Armstrong via cctalk < > [email protected]> wrote: > > Darn - my beloved Planar ELT320 terminal has died. I was just sitting > there using it and suddenly the screen went blank. The keyboard still > works > and the power LED lights, so not a simply power supply failure. > > Does anybody have a schematic or service manual for these guys? It's one > of my favorite terminals - not only does it have a beautiful orange/amber > EL > display, but it's also way smaller and lighter than any VTxxx terminal of > the era. > > > > Thanks > > Bob > > > > I also have an ELT320 that failed with a completely dead screen quite a > while ago. I haven't done anything to troubleshoot it yet. My wild guess > without anything to back it up is that maybe a high voltage inverter board > for driving the display died. Maybe I'm lucky and it's just bad capacitors. > I need to open it up again and take another look. > >
