--- In TekScopes@y..., "Bob H." <fisher_c_body@y...> wrote:
Good Evening
I have a 7704A mainframe that is in need of repair. I turned it on
this morning after not having been powered up for about 2 years.
The
trace was moving around erratically. Then I heard a sizzling sound
(never a good sound) and immediately turned it off but not before a
whisp of smoke emerged from the bottom of the scope.
I live in the Atlanta metro area and would like to find a company or
individual who is able to repair it.
Also I am in need of a horizontal sweep module. I'm not sure what
model I am looking for. This scope will be primarily used for audio
frequency applications. Any hints or suggestions would be very
helpful.
The modules I have are 2 7A26 and 1 7A16P that is also in need of
repair.
Any help would be greatly appreciated.
Often the Tantals for Supply Decoupling having a short.
The Chokes which are located before them then usualy smoke.
(at least in the last week i have repaired a 7A26 with such a failure)
For mostly audio frequencies a 7B53(A) would be the right choice for
the time base plug in.
Jorgen
dj0ud