We have two of these excellent machines in addition to our Sony APR 5003 and Studer A80′s. The Tascam BR-20 was Tascam’s last and top of the range 1/4 inch reel to reel tape machine and available in two track stereo and stereo with centre timecode option.

The capstan drive in the BR20 is belt driven by a wide belt. Both belts in our machines looked OK but we’ve replaced all roller bearings, belts and pinch rollers in both of our machines anyway as a matter of course. These parts are still available from Teac UK via Acoustic Services on 01-844-347600.

Below is a simple explanation of how to change the capstan belt.

1. Unplug machine from mains power and move to a strong stable base.
2. Remove cross head screws from the rear panel and lift plate off. Depending on the type of plug in your country you may not be able to remove it completely.
3. You’ll now be able to see the capstan motor and it’s control board attached to it.
4. Remove the 4 cross head screws and gently lift the analogue audio output board away from the machine as in the picture above.
5. We now need to remove the whole capstan motor assembly with the control board still attached. Remove the 4 cross head screws right at the front of the assembly, NOT the six nearest to you when looking at this image. 
6. Carefully unclip the 4 cable connectors from the motor control board. The other connector cannot be removed from the board and must be removed where it connects to the other board.
7. The whole assembly can now be lifted out from the machine. Be careful to not snag any cables and remember to unclip the black cable ties.
8. You’ll now be able to unclip the control board from the assembly by carefully compressing the black clips with some needle nose pliers.
   
9. Now remove the six cross head screws holding the capstan motor assembly together. This is the only way to remove and refit the capstan belt. There’s not enough room to do it any other way!
10. Now you can remove the old belt and capstan shaft. It’s a good idea to clean the capstan with IPA where the old belt has run and reapply a little grease to the bearing end of the capstan.
11. Fit your new belt and reassembly is the reverse of dissasembly! Be careful though to not drop the screws into regions you can’t get them out of – luckily there aren’t that many on this machine but a long magnetic screwdriver is very useful.. just don’t get it anywhere near the headblock and heads!
    

This is something you don’t see everyday! An almost unused and boxed 1/4″ 2 track reel to reel tape machine, a Tascam BR20 one of their highest quality machines sometimes installed with a Timecode head for broadcast and editing applications.

This machine somehow turned up at an IT Recycling centre in Essex but is now in much safer hands transferring tapes, in particular a very large archive of library music on 10.5″ NAB reels owned by Mood Media Ltd.

As you can see this machine is in it’s original box, with packaging and first look at the heads show almost no head wear but some nasty oxide that took a while to clean off.

This machine needed little work to bring it back to spec, a new capstan belt, pinch roller, tape tension and speed setting and a full calibration.
The capstan belt change is the subject of another blog post here..

A recent addition to our video arsenal is this rare 1976 vintage 1/2″ colour reel to reel machine.

This has needed some work to get it functioning well such as new belts, hardened grease cleaned off the mechanism, etc but is now able to transfer colour recordings made in this format of reel to reel video.

A more detailed article on the repair of this will appear soon as will information about our other reel to reel video machines, the Hitachi / Shibaden EIAJ machine, the Sony CV-2100 skip field VTR and the enormous Ampex VPR-2B 1″ video machine… and we’ve got two of these!

Thanks to Rich at www.labguysworld.com for the JVC service manuals.

The regular service of analogue machines which will involve the mechanical alignment then electrical alignment / calibration is really important if you’re attempting to get optimum transfers and reduce any risk of damaging the potentially fragile tape.

While some of our machines are serviced by others we like to regularly check them and have gradually bought our regular servicing in house. Of course this needs specialised tools, test tapes and gauges, often totally unavailable new now.

On a lucky eBay day I happened to win one of these beauties, an Information Terminals M-300 gauge. This enables you to accurately set the tape guide height and also the head stroke. It is a universal gauge and can be used across many decks.

Nakamichi tape deck owners have had a hard time doing this part of their servicing as the original Nakamichi gauges are very very rare now as is this.

A member of the naktalk mailing list though recently borrowed our gauge and has had it measured and will soon have a small batch CNC machined and made available. These remanufactured gauges will have a few small modifications to improve the design.

Thanks to Willy at www.willyhermansnervices.com many more tape deck transports will be able to be aligned correctly.

We’ve been honored recently to have won a large contract to help in the digital migration of an extensive educational video archive by the transfer from U-matic archive copies to uncompressed video files.

While the archive had been stored in an suitable environment and rarely if at all played, they had not survived well. The Sony branded tapes from the 1970′s and 1980′s all exhibited binder hydrolysis or sticky shed syndrome. We were still able to get good transfers though using our range of umatic machines, particularly the Sony BVU-950P and For-A Time Base Corrector.

www.mowbraywoodwards.co.uk

We’ve recently been happy to be involved, with Mobray Woodwards Solicitors,  in the audio transfer of important evidence in a  local Crown Court case.

Even given the poor quality or the recordings, made on the slowest tape speed of 1.2 cm/s we were able to make transfers to CD which were clear and understandable with CD track markings for easy access to specific sections of the audio.

Microcassettes, until recently, were used regularly for voice recording in small, portable dictaphone type of machines. Their fidelity is not high but when used for voice it is usually acceptable.

Greatbear are able to transfer all formats and speed of microcassette in addition to 1/2 speed standard cassettes that were common for voice recording of interviews and meetings in the police service, inquests, etc.

For more information on high quality audio tape transfer and restoration please visit our transfer pages.

Over the last 12 months we’ve seen this side of our business grow and adapt to the range of transfer needs that individuals, businesses and media creation organisations have.

We are able to support a wide range analogue and digital, consumer and professional video formats from the late 1970′s onwards such as: Betamax, VHS, SVHS, VHS-C, Video 2000, 8mm, Hi8, uMatic, Betacam, miniDV, DVCAM, etc.

We offer straight video transfer to DVD and a higher quality transfer service to DV or  uncompressed AVI which can then be supplied on hard drive, edited, encoded to a very high quality DVD or supplied on digital tape.

We pride ourself on our positive, friendly service and are happy to give advice over the phone or by email. When you call us you won’t be stuck in a voicemail system or told we’re an internet company so don’t like speaking on the phone!

Feel free to contact us by phone or email.

I’ve had these belts sitting around for a few months now and they’ve finally come around on my to do list. Thinking this would be nice and easy like the Teac C-3x belts I whipped the cover off my 234 eager to put it back to work transferring those thousands of undiscovered bedroom gems that must be around in peoples’ cupboards.

Tascam 234 4 track tape transport

Looked nicely laid out and well constructed as all this old Tascam equipment seems to be. I thought I’d just take the transport out and it’d be easy. There are just two belts in the 234, the capstan belt and the belt that moves the transport up and down. This cam mode belt had stretched and come off and the capstan belt had pretty much disintegrated. Once I start I find it hard to stop and this isn’t a quick job the first time, you need to be methodical and patient, good screwdrivers help too.

Well here comes the process, it seems pretty daunting at first when you see how many boards, cables and bits you have to remove and disassemble to replace the belts.

(more…)

Recently a customer sent me a VHS tape for transfer which looked like this:

I didn’t even attempt to play it in my machines as I didn’t want to be cleaning the transport all day but I did find an interesting U.S. based company that specialises in restoration of very damaged video tape.

http://www.videointerchange.com/video_recovery.htm

I have no direct experience of this company but from their site they seem very knowledgeable and can transfer some very, very obscure formats from the past.

Growing up in the 1970′s and 80′s I had a lot of these and still do but they’re covered in my scrawly handwriting unlike the fine collection here:

http://zabava.septem.cz/Blbustky/obrazky/kazety/

I think this is originally form a Japanese site that ‘disappeared’ from the web some time ago – it’s nice to see it back anyway! I’m tempted to do my own version with the huge piles of tapes I own and love and have collected recently.