I've got a 565, and a Mac Tools ET2020 which is a 565 with different firmware for automotive use. The ET2020 has a bad power supply. For whatever reason, sitting around with dead batteries kills the supplies. I'd bought one off eBay, and it worked before I got it (confirmed it was the same unit). When I got it, you could hear a faint click, but no display. Both seller and I were baffled. There is a 565 that's been listed on eBay for sometime as new, but clicks, with no display.
Does anyone have schematics of the PS, or understand what fails? We seem to be able to get schematics of every other Tekyronix scope, just not these. Barring that, would anyone in the states be willing to pull the glass from the ET2020 and transplant it to my working 565? I really want the automotive features of the 2020. Obviously , you could copy the firmware for others to use.