Osborne 1 monitor questions

From: Tony Duell <ard_at_p850ug1.demon.co.uk>
Date: Thu Aug 28 17:11:00 2003

> > Unfortunately I don't have an HV probe at the moment,
> > so I'm being cautious about poking around the CRT.
>
> Well, using a screwdriver, pry up the cap over the HV lead on the CRT so
> you can get at the metal --- and draw an arc to see if HV is present. Use

No, please _DON'T_ do that. You can burn out semiconductors all over the
instrument -- in this case you could damage ICs on the CPU board, etc.

> an insulated screwdriver, and don't tie it to ground. You should see a

Admittedly it's less likely to do damage if the screwdriver is earthed
through a high impedance (the handle and _you_ (!)), but I still wouldn't
risk it.

-tony
Received on Thu Aug 28 2003 - 17:11:00 BST