• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

Need help for a sick Kenwood 700C

A

antiproanti

New Member
Hey everyone!
So I've been having problems for a while with my 1975 kenwood 700c preamp (part of the whole 700 Supreme 3-tier system, 700m (main amp), 700c (preamp/volume control/eq), and t (tuner)...a beeeeeautiful system that ive loved dearly for many years)
it's been cutting out and not giving me a full signal and whatnot randomly for a while, i took it to a local electronics place and they figured out the power transformer in the 700c unit is going bad, the problem is they said its a very hard part to come by and they arent having much luck in finding a new one for me...

So my question is does anyone out there by any chance have an old 700c power transformer unit i could buy, or know where I might be able to get one?
it's Part # L03-0100-05 / SM-60224

I know a few years ago I talked to echowars about a full refurbishment of the 700c which i unfortunately cant afford right now (believe me, i would LOVE to have his treatment done otherwise) but if he or anyone else out there maybe has an old parts system or something they could gut i would be ever so grateful!
 
Register to hide this ad
i would look for a new one with same specs and install it .. i cant find the manual for it so cant recommend one .
 
antiproanti said:
i took it to a local electronics place and they figured out the power transformer in the 700c unit is going bad,
Click to expand...
:bs:

Complete and utter bullshit.

This is what 'techs' (loosely used, in this instance) say when they want your diagnostic fee but are too lazy or too stupid to fix the problem. The money you spent for that so-called 'estimate' could have gone towards a restoration.

I swear, it seems like most of these repair places stay in business by taking in work, collecting their fee for the estimate, and telling the customer that 'it isn't worth fixing', or 'we can't get parts', or 'it's got a bad transformer'.

Pack it up and send it here. By the time I'm able to get around to rebuilding it, you could have saved $10 a week and covered the rebuild cost. ;)
 
Power transformers rarely ever go bad... a large majority of the time when a tech says that its BS.
 
EchoWars said:
:bs:

Complete and utter bullshit.

This is what 'techs' (loosely used, in this instance) say when they want your diagnostic fee but are too lazy or too stupid to fix the problem. The money you spent for that so-called 'estimate' could have gone towards a restoration.

I swear, it seems like most of these repair places stay in business by taking in work, collecting their fee for the estimate, and telling the customer that 'it isn't worth fixing', or 'we can't get parts', or 'it's got a bad transformer'.

Pack it up and send it here. By the time I'm able to get around to rebuilding it, you could have saved $10 a week and covered the rebuild cost. ;)
Click to expand...

Good call EW. I hear story after story of audio owners getting taken by repair shops with tech school grads in the back room. Luckily, I'm very well taken care of.
 
wow guys, thank you so much...i was getting a bit suspicious that was the case though hoping not, but you're right...im gonna snag it back from the shop and send it to EW (many thanks again man, i'll contact you via email for more details)
Being a computer tech myself I guess I should know better, but i tend to try to think the best of people...(that'll definitely bite you sometimes)
Anyway, i greatly appreciate the input, this system is too important to me to take any more risks on...i just hope they know what theyre doing enough to not have screwed anything up by now.
 
Last edited:
They may not be trying to rip you off...they may simply be really stupid (or just in the wrong line of work).
 
While said tech might well be an idiot of monumental proportions, transformers can go bad in preamps. I had an Adcom GTP-400 that was tossed in the trash because the transformer primary opened. Bought a new one from Adcom stuck it in and eventually discovered a ceramic cap in the rectifier circuit had shorted (causing the original failure). A shorted ceramic cap? Seriously - WTF?

As said earlier, power transformers in solid state gear rarely go bad, doubly so for preamps. Tube equipment is another story.
 
You must log in or register to reply here.
Back
Top Bottom