hifi engine

Manual Library / TEAC

TEAC A-4010S

Stereo Tape Deck

add a review add a review

TEAC A-4010S

Description

The TEAC A-4010S 4-track stereo tape deck is high quality equipment designed for the serious audiophile who desires a tape deck containing all the features required for interconnecting to a component stereo system or for expanding a console unit to provide tape recording/reproducing capabilities.

The A-4010S deck has an extra playback head for automatic reverse play, eliminating the need to turn the tape over when the end of the reel is reached.

Specifications

Track system: auto reverse, 4-track, 2-channel, stereo system

Heads: 2 x playback, 1 x erase, 1 x record

Motor: 2 x reel, 1 x capstan

Reel size: up to 7 inch reel

Tape speeds: 3 34  7 12 ips

Wow and flutter: 0.12% (7 12 ips)

Frequency response: 30Hz to 20kHz (7 12 ips)

Signal to Noise Ratio: 50dB

Crosstalk: 40dB

Input: 80mV (line), 0.25mV (mic)

Output: 0.5V (line)

Dimensions: 17 3/8 x 17 7/16 x 8 1/2 inches

Weight: 44lbs

Downloads

instruction/owners manual  English

14459+ service manual  English

If you have any problems opening files please read the download FAQ. All files are provided under strict licence and reproduction without prior permission or for financial gain is strictly prohibited.

If you have additional documentation please consider donating a copy to our free archive.


Comments

re: A-4010S playback

I fired-up my 4010s after setting idle for 25 years. Had to replace the capstan drive belt. Everything works but there is no output from the right channel after 3-4 minutes of playing. The UV meter stop responding. So I'm thinking the problem is Q1 or Q3 for the right channel preamp. So, are these components located on the same circuitboard as the 3 relays? And are they off the shelf components?

Thanks
Francis

re: A-4010S

I am rebuilding a Teac 4010s. Got it all cleaned, lubricated, new belts.
The play, fast, rewind, FF buttons will not stay engaged. All of the motors work, everything seems to be functioning, but the buttons. How are they locked in? I see a coil, are they solenoid locked? any help would be appreciated. Also looking for a VU meter cover.
Thanks
Gary

re: A-4010S

The only button that stays in is the Fast Forward button. That is what the solenoid does. If once you press play it plays the tape then that is the normal operation.
I own a 4010 SL and a 4010GSL

re: A-4010S

I finished replacing the capstan belt (on the inner track - i.e. nearest to the front metal cover) and putting oil where needed but I am having problems. Specifically, and with the front metal cover removed so that I can see what is going on, with the power on, when I simply move the automatic shut off lever to the far left/on position, the belt and flywheel start spinning and will only stop when I move the lever back to the right. However, if I then hit the run button, nothing happens; that is, the reels are stationary and do not move in either direction. A related but different problem is that, with the front cover back on, none of the start, forward, or reverse buttons work - they are all in a non-functioning mode, flat to the metal cover and not protruding from the cover and working. Any help would be much appreciated. Thanks. Mike

re: A-4010S

Hi Mike,
I lost track of you. I did not look into HFE for weeks. So the belt was gone?
This new problem has me stumped.
How did you put on the belt? Did you remove the transport from the wood case? Then remove the back metal cover on the transport, the 4 -5 screws holding the deck assembly on lifted it all out of the way and install a new belt from behind?
You must have repositioned some of the mechanics or remounted the deck ass'y wrong. Sounds like a relay is not getting activated. There are 5-7 relays on that deck that operate the transport.
I will post if I can think of anything.
Frank

re: A-4010S

Hi Frank, Did some, but not most, of what you describe. With the belt came a set of instructions that did not require dismantling everything. From the back, what I did loosen was the bar across the back of the capstan and, having removed the screws holding the capstan in place from the front, was able to weave the belt in from the back and around the flywheel and pulley in the center. Didn't really move or dismantle anything else so I'm a little puzzled and everything seemed to go back in place in the right order and as it should.

First question to start the process: with power on, when I move the automatic shut off lever below the right-hand reel, does that automatically engage the flywheel - with mine, it does? Second, is the only way to stop the flywheel to release the shut off back to its far right position? Third, with out the reels attached, the system and controls, with the front cover off, seem to work fine, but when I attach the reels, it doesn't have enough juice to turn them; could that be a gummed up oil situation? Finally, as noted in my earlier note, I seem to have other problems when I re-attach the front cover, like the control basically sticking flat to the cover and not able to be pushed in or to retract. Thanks so much. Mike

re: A-4010S

Am sure this is a pretty basic question but, after years of not playing my Teac, I set it up today and when I hit play, nothing happened. When I took off the reels, however, the shafts of both reels spun in both forward and reverse, but with the reels attached, nothing, either forward or reverse. Any thoughts on how I can fix the problem/ Many thanks.

re: A-4010S

Frank, thanks very much. The pinch roller works and it all works if I hit fast forward or fast reverse, but in regular play mode it "engages", if you will, but doesn't turn. That said, if I remove the reels and hit play, the spokes on which the reels sit turn just fine. Any further thoughts? Thanks.

re: A-4010S

Is your pinch roller engaging, that is, is it moving up to the capstan?
Can you tell if the capstan motor is running? The shut off arm on the right side turns on the motor, just move it to the left a little. You can also take off the back panel, I think there are only 8 screws, then you can see the motor running.
If the PR is not engaging, the shaft it pivots on is all gummed up from old grease.
If PR is engaging and motor is running, your belt is probably bad if not dissintegrated.
Frank

re: A-4010S

Frank, thanks very much. The pinch roller works and it all works if I hit fast forward or fast reverse, but in regular play mode it "engages", if you will, but doesn't turn. That said, if I remove the reels and hit play, the spokes on which the reels sit turn just fine. Any further thoughts? Thanks.

re: A-4010S

Did you take the back off of the tape deck cabinet?
You can then see if the motor is running.
If so, I would guess your belt is shot.
I have seen many where the belt just desintagrates.

re: A-4010S

Have taken both the front and back panels off and the belt is shot. Was about to remove the 4 screws holding the capstan in place and one of the screws would appear to be directly behind a mass of wires (2nd screw in from the right as you look down on the unit from the rear). Any suggestions on how to reach that screw? Related questions: once the screws are removed and the capstan is movable, does it easily pull out from the front sufficient to then reattach a new belt? thanks so much! Mike

re: A-4010S

thanks - will begin to take it apart and see what's going on.

re: A-4010S

reel holders not holding, drill a hole kinda close to the opening, in back of the holder, jam in a piece of metal and the rubber closest to the hole will push out and create a tighter grip

won't record, make sure the pinch roller is FULLY dis-engaged or it won't kick into record

re: A-4010S

MY 4010S had a worn out slipping belt which I replaced. Now it plays the tape too fast. Slow speed 3-3/4 sounds almost like 7-1/2. I cannot figure out what is causing that.

re: A-4010S

The belt is running on the 50 Hertz side of the flywheel and capstan motor. Open it up and place the belt on the other slot.

re: A-4010S

Picked a A4010s up. Cleaned and lubed but am having problems with the left input. It does pick up signal but it's very weak Hardly registers on the meter even when the input level is all the way up. Prerecorded tapes output sound good on left and right but any sound going into the machine only registers well in the right meter. Switched the left and right cables going in so I know it's not the stereo output. Cleaned the source switch again as well as the level dial and the input plug. Left mic input works fine. Any ideas were to go from there?

re: A-4010SL

I was looking at the diagram for lubrication and it just points to the motors, capstan assembly and Pinch roller. Where do you exactly put the oil? I was looking for a small hole or some point where it looks like it what do some good, but didn't see one.
thanks
tom

re: A-4010SL oiling

There are small clear tubes that lead from behind the reels and go into the motor. I think, repeat "I think", these are to direct the oil into the bearing. I am considering putting a drop of oil into one and see if it works.
Does anyone know if this is correct?

re: A-4010SL oiling

I'm pretty sure the little tubes are indeed there to direct oil to the bearing. Make sure the tubes are still connected at the other end.

re: A-4010S

I performed some maintenance on my 4010S.
I replaced the main belt and cleaned and oiled the pinch roller arm shaft.
After reassembly things are not right.
Now when I try to play forward the left hand reel turns CW (It should turn CCW)
and when I try to play reverse the right hand reel turns CCW (It should turn CW).
What need I do to correct the situation?

re: A-4010S

I received an email from David Davis after referring my concern to him. He said:

"Not to worry..... that’s how it works. Take up reel goes the direction to take up tape. The supply wheel runs opposite to maintain tension. With no tape loaded, it does what you saw."

re: A-4010S

My 4010 will not reverse. When I press the button, I hear what sounds like a faint solenoid and then nothing happens. I know the motor actually is supposed to reverse so I'm thinking it's a stuck solenoid. I can't seem to download the manuals because the pages come out blank only for the 4010. Does anyone have any ideas on either issue? Thanks!

re: A-4010S

Hello,
I recently acquire a Teac A-4010S that needs a new belt. When I opened the back to get to the capstan mounting screws, I noticed two wires twisted together and soldered, with the solder joint just hanging there in the air. I looked for a place to re-connect them, assuming they had been attached somewhere, but could not find a place they obviously came from. The wires are each white with red and blue stripes. I have a picture of them I could send to anyone who is willing to look at their machine and tell me where they go. Of course, it is possible that they should be where they are, and maybe insulation has dropped off the solder joint.

If there is a way to post the picture here, I'll be happy to do that too, but I can't see how to do that.

I just found the gallery and uploaded my picture there. Title "Teac A-4010S rear view"

Thanks in advance for any info.

Strickce

re: A-4010S

I found where the wires came from, remote connector pin 8.

re: A-4010S

Just a note to thank you for your speedy response to my request for a user manual for my Teac A-4010S tape deck

Record monitor latency

Hey,

I'm new to this site and not sure if this is the proper place to ask questions. If it's not, I'm sorry, and would you please direct me to where I can as this question? Otherwise, here goes. I've recently replaced the capstan belt on my teac a-4010s. Most everything is working well, however I've found that there is some latency between the record and playback. The delay is noticeable in many instances. Example: When i record from a microphone to the tape deck and set the monitor to tape, there is a noticeable delay from when i speak to when the sound comes out of the monitor (like a slap back only longer.) Another instance of this can be heard when recording L and R separately. Example: If I record guitar to left channel and then go back to record vocals on the right, they end up noticeably out of sync. Is this caused by the distance between the record and playback head? Is it possible to decrease the latency? Any help would be appreciated.

Thank you,

Daniel

Reel Holders

The black rubber reel holders loose their grip.
Where can I get good new ones?
Ebay ones are old and worn out, too.

golfnut6's picture

re: Reel Holders

An emergency fix for me was a metal binder clip -- OIC® Small Binder Clips at Office MAX. Not too pretty; but they work so well that I gave up trying to find acceptable rubber ones on eBay. There is a photo in my gallery (TEAC4010sReelHolder).

grebnesi's picture

re: Reel Holders

I use the old time liquid rubber cement. I dip a toothpick into the cement as deep as the hole in the reel holder. I then slowly apply the cement evenly around the inside of the hole. I only apply the cement to the sides, not the bottom. I do one or two applications and let the holder rest between applications face down until the cement cures. A day is enough to let the cement set up. My holders hold like new.

Reel holders

Go to Lowes. Buy some large rubber stoppers in the nut and bolts section. Drill a hole in the center of the smaller side of the stopper. Sorry, can't remember what size, but it works great and isn't hard to figure out.

re: Reel holders

I found some standard grommets with a small hole in the center that work perfectly as reel holders. You could probably find them in a well equipped old fashioned hardware store with the drawers that have all kinds of small parts.

oldtvradio's picture

manual service

I found this site....by search.
I am amazed about the many models....and the rapid download of pdf details.
Will return with more comments after checking the vintage tape TEAC A 4010S.
My past experiences with equipment allowed me to open and view..and do some service.
This give me the details needed to maintain....use and service.

Teac a4010s

Please im looking for the Capstan Drive Belt For the TEAC A4010S open reel tape recorder
Thank you

l caballero

re: Teac a4010s

I purchased two of these belts several years ago from DAE

Teac belt

Also can be bought from Teac, probably the same belt, about the same price too. Email them if you'd rather have the factory replacement. From my recent order:

The drive belt, part number 5534692001, is available at $13.80 each. Please add $5 for postage/freight per order for UPS ground service within CONTINENTAL USA plus local and state sales taxes where applicable.

belt for Teac 4010S

Hi,Can be purchased on Ebay,capstan drive belt,just replaced mine.

This website is not affiliated with or sponsored by TEAC. To purchase A-4010S spares or accessories, please contact the company via their website or visit an authorised retailer.