Capstan motors of Teac X7 rotate only manually (very stiff)
Reel to Reel Teac X7 has dual capstan motors. Worked fine several months ago. After lack of use, the capstan motors would not move the tape on playback. After rotating them manually to test for gumminess now they rotate only when substantial torque is manually applied, not by their own power. They rotate together (drive belt still connected, maybe?). I tried a drop of oil, no help. The service manual gives no clue how to take the machine apart or what may be wrong. Is there a book or some source of information which can help? Can the motors be lubricated? Is that the problem? Or do the motors have to be replaced? Are they available? Should I take it to a repair facility?
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Re: Capstan motors of Teac X7 rotate only manually (very...
Allied electronics still has these small motors. They probably won't have the same part numbers though. You will need the printed information from the motor as well as accurate dimensions for an accurate comparison.
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In order to maintain tape control and tension the reels always pull lightly in opposite directions during PLAY mode. The capstan moves the tape in the desired direction at a precise speed. If the capstan doesn't engage the tape BETWEEN itself and the pinch roller you'll get the reels battling over control of the tape. Check the tape routing.
It's a 4-head reversable deck where the Forward tracks are arranged across the physical tape surface, front-to-back as follows:
ForwardLeft ReverseRight ForwardRight ReverseLeft
...so it sounds like the Reverse playback heads are engaged at the same time you play Forward, so you would hear those adjacent tracks backward. If you play the tape in the Reverse direction, is the Forward program audible (but backward)?
If so and in otherwise high fidelity, something in the Forward/Reverse head selection may be hosed.
Or, if the out-of-phase tracks are mushy and low volume, the physical tracking of the tape across the heads could be WA-A-A-A-Y bad. That would probably be visible as sideways distortion in the tape path. Shine a high-intensity light on the tape where is passes over the heads, then reverse it while watching where it sets up on the heads. It should be centered on the heads and not change its orientation when reversed. Compare where it tracks in motion with the probable visible wear marks (shiny bars across the heads perpendicular to the travel) where the tape has polished the heads over the years.
Or, the heads are so worn the coils pick up signals from their neighboring tracks.
yes, one nice overhaul will fix..(this can be done by you if you are daring...when u open take apart you will find a metal strip like band..I had used a bandaid for brakes the gauze side) you need new brakes (just like a car it is run down) on the reels in order for it slow & stop when it suppose to...or you can search and find a good old fashion repairman..(sorry I dont know of none)...for dragging, before playing all open reels fast fwd to one end then rewind it back to the beginning now hold the blank reel with that little bit catch tape try to tighten full side tape by going slightly going the other way not trying to stretch nor pop the tape.....now press play
You need to replace the motor run capacitor. It's a small aluminum can looking thing with three wires right next to the motor; they often leak paraffin wax into the bottom of the case when they overheat. Whether or not yours has leaked it's easy to replace if you can use a soldering iron. Search eBay for a Sony reel to reel 1.5uf 250VAC motor run capacitor - they're less than $15 and come with detailed instructions. Please waitImage not available
Did you ever get your schematic? I recently got the Model 260 and it has the original owner's manual. I could try scanning the page for you, if you still need the info (if you think that would help you).
The probem as told on another site (sorry, can't remember to give proper credit) is that the pinch roller is not making contact with the capstan. THis is exacly what happened to my 1800 after sitting for a long time with no use. THe solution was to manually excersize the lever going to the solenoid to unstick the mechanism. Then, voila, pinch roller pinches, tape moves, UVW1800 happy again.
Are you talking about a wheel or a belt? If it is a belt you can go to a vacuum cleaner shop and match one up( make it just a little small) and it will work just fine. I have done this with perfect results.