[Test-Equipment] TEK 1502 TDR info needed

VE6JY Don Moman VE6JY Don Moman" <[email protected]
Sat, 21 Dec 2002 02:01:35 -0000


My recently acquired Tek 1502 TDR has (at the very least) power supply
problems. The +14 is OK but the +26, +10. +5 and -5 are all way low.
Appling external  26v to to 26v test point brought up a  bright dot on the
CRT, so there is some functionality there. Obviously the horiz/vert circuits
aren't getting the PS voltages they need yet, but at least the CRT/Hi
Voltage is likely OK.

Checking with a home brew Huntron style checker shows lots of suspicious
signatures on the various diodes etc but without knowing what is in
parallel, it can be misleading.

Just wondering if anyone has or can point me to a schematic of the power
supply. A google search didn't bring up anything obvious.  I may eventually
need a service manual but if I can get the power supply  up and running,
that would be a good start.

73 Don
VE6JY