The guidance I have had is that for a PSU an analogue 'scope is fine.
For
logic then a logic analyser is what you need. Are you talking about
some
other category of hardware?
Regards
Rob
IMO, keep it simple for the moment. If you are not used to using a
'scope and you are only intending to repair your PSU at the moment, stay
with an analogue dual-beam 'scope with a bandwidth of 20 MHz or so.
There are excellent ones available cheap on eBay or other places.
Philips, Gould, Hameg or Kenwood made decent 'scopes. It will also do
fine for audio and even some video work, should the need arise. Learn to
use that, then if you really think you need something better, replace
it. Tektronix 465 is a lovely 'scope but IMO overkill for what you need
at the moment. OTOH, if you anticipate getting deeper into repairing
stuff, by all means get a Tex 465, 475. HP 180 'scopes are nice too.
/Jonas