IO-18 scope

[Dan Olson]

Hi,
        I just joined this list, and am sending this mail right off as I
would like to get started this weekend.  I have a Heathkit IO-18 scope
that's in rough shape, and I need some help figuring out how to go about
initially trying it out.  It looks like it might have been exposted to
either a little weather, or at least some condensation, as there is a
little surface rust on the transformer (and a couple other small spots) as
well as a little currosion starting on the case inside.  Maybe you can
tell me if my initial plan sounds reasonable or not.  For starters, I
think if the transformer or CRT were to end up being dead, there is
probably little point for me to keep going.  I don't own a varriac (sp?)
but I've heard of a trick of using a light bulb in series to drop voltage,
would this be a good way to check out the transformer for shorts?  I was
thinking it might be worth replacing some or all of the caps just to be
safe, does sound reasonable?  I'm concerned that I might run the risk or
frying something otherwise, and I would have a tough time finding
replacement tubes.  Does anyone know where I might find a schematic or any
info about this scope?  Any suggestions would be greatly appreciated!

        Dan

Sponsored by the City of Tempe 

Listserver Submissions:  heath at listserv.tempe.gov
Listserver Subscription: listserv at listserv.tempe.gov - "subscribe heath 'name' 'call'"
Listserver Unsubscribe: listserv at listserv.tempe.gov - -"signoff heath"