Which middle-of-the-line receiver do I save?

[tmad40blue]

Hello all,

After a great summer working as a counselor up at Interlochen Arts Camp, I came back to several vintage mid-fi SS components, all in need of some degree of repair. Since I lack the knowledge, patience, and courage to attempt the repairs myself, I want to have a tech do the work for me. I suspect that my budget will quickly become an issue, so I guess I'm looking to repair the "most worthy" of the units, if you catch my drift.

Here's what I've got:

Harmon Kardon
HK-750 integrated: Signal is heavily distorted in one channel, regardless of source.
HK-330i integrated: Dead. Does not give any indication of turning on.
HK-825 preamp: Needs some TLC but otherwise in OK condition.
HD-500 CD Player: The arm that catches the CD doesn't catch the CD unless I physically push it down.

Technics
SA-425 Receiver: Was working fine, heard a pop and then no sound from either channel. Speaker relays do not trip anymore.

Are there any gems here, something that is highly regarded that I would really want to repair and use? What about the opposite, are there any on the list that I might want to stay away from for one reason or another?

Thanks!

 

[Ruxman]

I don't know anything about Harman Kardon, but I would throw away that Technics. It's not worth your time or effort.