[Premium-Rx] O/T Tektronix 603a.

[davesc50 at tiscali.co.uk]

Hi All,

Apologies for the off topic post, but you are the most helpful

bunch of people out there when it comes to this sort of thing.

I have

just acquired a Tektronix 603a X-Y display that I was hoping to hook up

to one of my WJ-8617's.
Unfortunately it is DOA, not entirely 
surprising
as I only paid £5 for it....

Does anyone out there have any 
service
info on these?
It keeps blowing it's +20v HT fuse, which is 
rated at
1A.
If I stick my ammeter across the fuse holder (gingerly), 
its
drawing about 3A...

I need to isolate the +20v supply to trace the

fault, but their appears to be no service info available on the net, 
and the supply seems to connect to pretty much every PCB.
I have found 
a partial 603 manual, although it seems pretty different, and half the 
schematics are missing anyway.


Thanks,
Dave.S.