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grizzly1
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Post subject: TEAC A-2340SX REEL MOTORS DEAD Posted: May Wed 24, 2023 8:57 pm |
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Joined: Jan Thu 01, 1970 12:00 am Posts: 525
Location: Manchester, NH
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As from the title, my problem. Neither motor engages when hitting play, FF, or rewind. Capstain motor working fine. I suspect the relays as the service manual suggests K1 relay, R1/K3/C5 for right reel, R2/K3/C20 for left reel. I will attempt to check this out further but was hoping someone with a bit more experience with this model could offer up some advice as to how the relays are energized. Please and thank you!
Thanks Griz
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Barry H Bennett
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Post subject: Re: TEAC A-2340SX REEL MOTORS DEAD Posted: May Wed 24, 2023 10:28 pm |
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Joined: Nov Wed 30, 2016 6:35 pm Posts: 13879
Location: Sunbury, Ohio 43074
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Is that one of the Teac decks that has a remote plug on the back? It would be a 10 or 12 pin "octal" type socket. If there is a socket there, and no bypass plug in it, none of the controls will work.
Check that first. If the plug is missing, you can order them either as pulls from dead decks, or someone on Ebay is making them for about $15. That's way cheaper than finding the plug, figuring out the wiring, and making one.
If not, I'll dig into it deeper for you.
_________________ Preserving the hist. of electronics, one boat anchor at a time! :) https://www.bbtvtestequipment.com
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grizzly1
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Post subject: Re: TEAC A-2340SX REEL MOTORS DEAD Posted: May Thu 25, 2023 3:01 am |
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Joined: Jan Thu 01, 1970 12:00 am Posts: 525
Location: Manchester, NH
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Did not know that ! There is no remote plug - I will look into that further but any part # would be helpfull. Found that info in the manual after downloading it - getting one ordered.
Thanks for the info
Griz
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SteveT
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Post subject: Re: TEAC A-2340SX REEL MOTORS DEAD Posted: May Thu 25, 2023 3:41 am |
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Joined: Mar Tue 03, 2009 10:12 pm Posts: 2408
Location: Great Bend, Kansas 67530
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Don't have the service data handy but does this model have tape sensor levers that have to be held up by the tape to activate the reel motors?
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grizzly1
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Post subject: Re: TEAC A-2340SX REEL MOTORS DEAD Posted: May Thu 25, 2023 3:51 am |
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Joined: Jan Thu 01, 1970 12:00 am Posts: 525
Location: Manchester, NH
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yes i do believe that - I won't know if problem solved until I get the dummy plug as I have verified Barry's input.
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Don Cavey
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Post subject: Re: TEAC A-2340SX REEL MOTORS DEAD Posted: May Thu 25, 2023 12:40 pm |
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Joined: Jan Thu 01, 1970 12:00 am Posts: 15384
Location: Fernandina Beach, FL 32034
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grizzly1
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Post subject: Re: TEAC A-2340SX REEL MOTORS DEAD Posted: May Thu 25, 2023 12:53 pm |
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Joined: Jan Thu 01, 1970 12:00 am Posts: 525
Location: Manchester, NH
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Yes - I do not have a remote but that is the machine -
Griz
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Tbirdkid
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Post subject: Re: TEAC A-2340SX REEL MOTORS DEAD Posted: May Thu 25, 2023 1:36 pm |
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Joined: Aug Sun 23, 2015 5:01 pm Posts: 1458
Location: Deptford NJ
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Was it working previously...or is this a recent purchase?
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grizzly1
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Post subject: Re: TEAC A-2340SX REEL MOTORS DEAD Posted: May Thu 25, 2023 1:55 pm |
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Joined: Jan Thu 01, 1970 12:00 am Posts: 525
Location: Manchester, NH
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I inherited it from my old friend that passed away a few years ago. I don't think it was working at the time but I know it worked at some point because I have some of his tapes.
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Barry H Bennett
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Post subject: Re: TEAC A-2340SX REEL MOTORS DEAD Posted: May Thu 25, 2023 2:23 pm |
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Joined: Nov Wed 30, 2016 6:35 pm Posts: 13879
Location: Sunbury, Ohio 43074
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I'm not sure why folks pull these plugs out. I've had several through the shop missing the bypass plug. All I can think is that they DO have the remote, or did, and did not send it in with the deck for repair. But you definitely need either the remote, or the bypass plug. Otherwise, none of the transport functions work, period. There's no point in going further until you have one of the above plugged into that socket.
_________________ Preserving the hist. of electronics, one boat anchor at a time! :) https://www.bbtvtestequipment.com
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grizzly1
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Post subject: Re: TEAC A-2340SX REEL MOTORS DEAD Posted: May Thu 25, 2023 3:00 pm |
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Joined: Jan Thu 01, 1970 12:00 am Posts: 525
Location: Manchester, NH
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Barry H Bennett
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Post subject: Re: TEAC A-2340SX REEL MOTORS DEAD Posted: May Thu 25, 2023 3:02 pm |
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Joined: Nov Wed 30, 2016 6:35 pm Posts: 13879
Location: Sunbury, Ohio 43074
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grizzly1 wrote: Workin on getting one I know. I was helping the other helpers 
_________________ Preserving the hist. of electronics, one boat anchor at a time! :) https://www.bbtvtestequipment.com
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dberman51
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Post subject: Re: TEAC A-2340SX REEL MOTORS DEAD Posted: May Thu 25, 2023 9:33 pm |
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Joined: Jan Thu 01, 1970 12:00 am Posts: 5166
Location: Boston, MA
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Ampex machines are the same -- remote control or bypass plug must be in place.
-David
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grizzly1
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Post subject: Re: TEAC A-2340SX REEL MOTORS DEAD Posted: Jun Wed 07, 2023 3:22 am |
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Joined: Jan Thu 01, 1970 12:00 am Posts: 525
Location: Manchester, NH
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Got the plug in today. Front panel controls are alive but do not work correctly. Stop works OK, Rewind (<<) works OK, Play (>) acts like fast forward, Fast Forward (>>) pulls up the pinch roller but the take up reel does not move. Seems like Play and FF are reversed. Suggestions appreciated.
Griz
Interesting, I just looked at the manual and the buttons on this unit have the play and FF reversed from the manual. I will get a picture posted tomorrow. Starting to wonder if the buttons somehow got swapped.
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Barry H Bennett
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Post subject: Re: TEAC A-2340SX REEL MOTORS DEAD Posted: Jun Wed 07, 2023 9:36 am |
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Joined: Nov Wed 30, 2016 6:35 pm Posts: 13879
Location: Sunbury, Ohio 43074
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The top three buttons are FF-REW-STOP The bottom three are REC - PLAY - PAUSE
When you hit play, does the pinch roller engage? A common problem with these is the pinch roller arm is frozen or sluggish due to glue that was formerly grease.
_________________ Preserving the hist. of electronics, one boat anchor at a time! :) https://www.bbtvtestequipment.com
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grizzly1
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Post subject: Re: TEAC A-2340SX REEL MOTORS DEAD Posted: Jun Thu 08, 2023 2:24 am |
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Joined: Jan Thu 01, 1970 12:00 am Posts: 525
Location: Manchester, NH
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I came to the conclusion the play and ff buttons were reversed. Why i don't know, but easy to swap after taking off the front panel. I noticed the pinch roller wqs not turning when it engaged the capstan. I apparently forgot a washer and the cover piece was binding it up which in turn stopped the take up from turning as it pinched the tape.
Thanks to all for the inputs, working well now after lube, new belts etc.
Project complete
Griz
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