UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Vintage Tape (Audio), Cassette, Wire and Magnetic Disc Recorders and Players
Register FAQ Forum Rules Calendar Mark Forums Read

Notices

Vintage Tape (Audio), Cassette, Wire and Magnetic Disc Recorders and Players Open-reel tape recorders, cassette recorders, 8-track players etc.

Reply
 
Thread Tools
Old 19th Jul 2013, 5:51 pm   #1
ronbryan
Octode
 
Join Date: Jan 2003
Location: Guildford, Surrey, UK.
Posts: 1,005
Default Akai VT-110 reel-to-reel monochrome VTR

Does anyone have any dismantling instructions for this early (1970s) reel-to-reel Akai VTR?

The internal lead-acid batteries are useless, but it powers up with an external 12V supply applied and a motor can be heard to run all the time, but the symptom when play is pressed is that the take-up spool doesn't rotate and tape spill occurs.

In addition, neither fast forward nor reverse wind operate. The capstan motor runs, so I want to check to see if any belts that drive the other functions are perished.

Taking out all of the five obvious screws in the top plate, plus removing the pinch roller is not enough to release the plate. I'm reluctant to dive in too deeply without the help of a service manual in case some critical adjustment is disturbed. Is anyone familiar with this machine please?

Ron
Attached Thumbnails
Click image for larger version

Name:	Akai-VT-110_web.jpg
Views:	91
Size:	120.1 KB
ID:	82101  
ronbryan is online now   Reply With Quote
Old 19th Jul 2013, 7:04 pm   #2
radiotechnician
Tetrode
 
Join Date: Jan 2013
Location: Powell River, British Columbia, Canada.
Posts: 73
Default Re: Akai VT-110 reel-to-reel monochrome VTR

I do have the service manual here for the VTS 110. Section II ,
Case Removal has 9 photos showing how to remove the mechanism from the case.

Firstly, the great peril of these machines is breaking off the drum head pole pieces.
Until the transport is repaired no attempt at tape loading should be tried.

I did work on these machine in the 70's with the Akai Service Engineer
who was assigned to our shops because replacing and aligning head poles
had to be done with an optical fixture. (we had t wait until no buses were
on the street as they shook the building making task impossible)

Steps :
1 remove battery
2 remove 6 screws on bottom
3 front escutcheon remove 4 screws (where batt jack is)
4 (where monitor jack is) remove 2 screws
5 (where camera jack is) remove 1 screws
6 remove head cover, remove waeel cover (their spelling) short cover
adjacent head cover remove pinch roller screw and wheel
7 remove tape guide roller, remove sub pinch waeel
8 mechanical panel remove 4 screws
9 the chassis is free from case

The images in the manual are overlaid with red writing that needs a
magnifying glass to read.


Of all the tape machines, in all the world, good luck in messing with
this one

5
__________________
Steve Dow
VE7ASO
radiotechnician is offline   Reply With Quote
Old 19th Jul 2013, 7:45 pm   #3
ronbryan
Octode
 
Join Date: Jan 2003
Location: Guildford, Surrey, UK.
Posts: 1,005
Default Re: Akai VT-110 reel-to-reel monochrome VTR

Thanks Steve for your helpful detailed reply. I'll see how far I get with the dismantling without the photos.

If anyone in the UK has a manual, perhaps I could borrow it.

Ron
ronbryan is online now   Reply With Quote
Old 19th Jul 2013, 8:20 pm   #4
radiotechnician
Tetrode
 
Join Date: Jan 2013
Location: Powell River, British Columbia, Canada.
Posts: 73
Default Re: Akai VT-110 reel-to-reel monochrome VTR

If you want a scan of the two pages with the instructions, drop me an email.
I'll end them in full resolution where the red does show up.

Because the post originates from my ham station, I must have a name and a postal
address in the request, or a valid Amateur Radio Call sign.
S.
__________________
Steve Dow
VE7ASO
radiotechnician is offline   Reply With Quote
Old 23rd Jul 2013, 5:48 pm   #5
ronbryan
Octode
 
Join Date: Jan 2003
Location: Guildford, Surrey, UK.
Posts: 1,005
Default Re: Akai VT-110 reel-to-reel monochrome VTR

I've followed Steve's instructions (thanks Steve) and removed the deck from the case. In the unlikely case of anyone else doing this, please note that there is also a need to remove the tracking knob screw and knob (step 8a) before the deck will finally come from the case.

I've had a look at the deck and have found that the square section belt driving the take-up reel is broken and an idler tyre (possibly only used for ff and re-winding the tape) has turned to black gunge. Other belts and idlers appear ok as they have not yet turned to gunge or broken.

Does anyone know whether generic idler tyres to fit an estimated 19mm diameter wheel are still available?

I also need a square section belt with a 2mm side and 150mm circumference.

Ron
Attached Thumbnails
Click image for larger version

Name:	Idler-and-belt-1_web.jpg
Views:	64
Size:	106.2 KB
ID:	82219   Click image for larger version

Name:	Gungy-Idler_web.jpg
Views:	58
Size:	91.2 KB
ID:	82220   Click image for larger version

Name:	Capstan-belts.jpg
Views:	62
Size:	136.7 KB
ID:	82221  

Last edited by ronbryan; 23rd Jul 2013 at 6:00 pm. Reason: Added belt information
ronbryan is online now   Reply With Quote
Old 23rd Jul 2013, 6:55 pm   #6
Michael Maurice
Moderator
 
Michael Maurice's Avatar
 
Join Date: Feb 2006
Location: Wembley, Middlesex
Posts: 3,977
Default Re: Akai VT-110 reel-to-reel monochrome VTR

cricklewood electronics can supply you with a belt and terrys rubber rollers will rebuild your roller for you.

Michael
__________________
Forum Moderator

www.tv-hifi-repairs.com
Michael Maurice is offline   Reply With Quote
Old 24th Jul 2013, 9:30 am   #7
ronbryan
Octode
 
Join Date: Jan 2003
Location: Guildford, Surrey, UK.
Posts: 1,005
Default Re: Akai VT-110 reel-to-reel monochrome VTR

Michael

Thanks for posting the links for belts and idler repair. I'm now trying to work out how to remove the idlers from the mechanism, so I can clean up the mess.

Ron
ronbryan is online now   Reply With Quote
Old 24th Jul 2013, 8:03 pm   #8
radiotechnician
Tetrode
 
Join Date: Jan 2013
Location: Powell River, British Columbia, Canada.
Posts: 73
Default Re: Akai VT-110 reel-to-reel monochrome VTR

This is the deck mechani layout.
Attached Thumbnails
Click image for larger version

Name:	Akai mechani 1.jpg
Views:	68
Size:	140.7 KB
ID:	82258  
__________________
Steve Dow
VE7ASO
radiotechnician is offline   Reply With Quote
Reply

Thread Tools



All times are GMT. The time now is 6:22 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at http://www.vintage-radio.net.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright ©2002 - 2014, S&P Technology.