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Sony TC 854 4

If your going to trace the problem down to its root cause, then you really need to get a service manual, and trace the proablem down with an oscilloscope.

But, even if you do this, and you identify, and replace the affending part, I guarantee you that you are going to find other caps will be going out not very long after you replace todays bad capacitor. Yes there are a LOT of caps in there, so this is no trivial job. However, if you go to all this effort, then at least you shouldn't be having any more capacitor failures for another 20+ years. The TC-854 is a nice enough machine that it is genuinely worth this kind of fuss. Not all that many others are IMHO.
 
ok thanks I will do what you say on the caps soon. But for now it is stored away in the closet with a cover on it until I get ready to fix it.
 
[digging up an old thread....]

I acquired one of these a while ago, and it works really quite well. I just had the heads reconditioned by JRF Magnetics. The only problem I've had is with the tape slipping behind the first pinch roller. I can't seem to figure out what's out of alignment; I've tried to align the two guides with limited success. It actually doesn't work half bad if I just take that roller off. Is it possible the capstan itself is out of alignment? I haven't looked inside yet.
 
Sony tc-854-4

I have a tc-854-4 if any body wants a copy of service manual with the schematics or a copy of the owners manual let me know and ill try to scan them for you. Don
 
I have a tc-854-4 if any body wants a copy of service manual with the schematics or a copy of the owners manual let me know and ill try to scan them for you. Don
trying to contact Don and request the service manual w/schematics for Sony 854-4
and ask him to copy and quote a price for copying and shipping to zip code 90275.
can call me at 310.373.6104

Jim Scrimger,
 
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