Oscilloscope question

In message <m1DK1qR-000IxxC at p850ug1> ard at p850ug1.demon.co.uk (Tony Duell) wrote: The 466 and 468 are both storage scopes - the 466 is electrostatic (analogue) storage, the 468 is digital storage. I've got a 466 here - it's a lovely scope and parts are still available from various people (Deane Kidd for one). I should know - I've just had to buy a new knob for the horizontal position control on my 466 after slipping while adjusting the handle... the scope flew forward and the knob got cracked. I didn't notice the crack until the knob shattered completely :( If you're after the custom chips, Sphere Research (<http://www.sphere.bc.ca>) have got stocks of some of them. The only part that IIRC is difficult to get for 466 scopes is the motor for the cooling fan. I suppose you could replace the motor/impeller assembly with a 120mm axial blower though. Ah, but the 466 manual has pull-out schematics and parts lists for every single major module (basically every single PCB). I try and avoid recent hardware due to the lack of schematics and service data, although the same applies (to a lesser degree) to older equipment. I'm after a maintenance manual for a Solartron 7150 - I've got the operator's manual but I want the schematics for reference (in case I end up fixing it at some point). I also want to know which chip(s) to pull and read out in an EPROM burner. Firmware ROMs don't last forever :) Speaking of which, the Tek 466 manual also includes a hex dump of the 6301 (?) PROM that runs the storage subsystem. Tek even included a state transition diagram... Later. -- Phil. | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB, philpem at philpem.me.uk | ViewFinder, 10BaseT Ethernet, 2-slice, http://www.philpem.me.uk/ | 48xCD, ARCINv6c IDE, SCSI ... Govt investigations contribute more to amusement than knowledge.