UK Vintage Radio Repair and Restoration Discussion Forum

UK Vintage Radio Repair and Restoration Discussion Forum (https://www.vintage-radio.net/forum/index.php)
-   Vintage Tape (Audio), Cassette, Wire and Magnetic Disc Recorders and Players (https://www.vintage-radio.net/forum/forumdisplay.php?f=35)
-   -   Akai VT-110 reel-to-reel monochrome VTR (https://www.vintage-radio.net/forum/showthread.php?t=98002)

ronbryan 19th Jul 2013 6:51 pm

Akai VT-110 reel-to-reel monochrome VTR
 
1 Attachment(s)
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

radiotechnician 19th Jul 2013 8:04 pm

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

ronbryan 19th Jul 2013 8:45 pm

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

radiotechnician 19th Jul 2013 9:20 pm

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.

ronbryan 23rd Jul 2013 6:48 pm

Re: Akai VT-110 reel-to-reel monochrome VTR
 
3 Attachment(s)
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

Michael Maurice 23rd Jul 2013 7:55 pm

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

ronbryan 24th Jul 2013 10:30 am

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

radiotechnician 24th Jul 2013 9:03 pm

Re: Akai VT-110 reel-to-reel monochrome VTR
 
1 Attachment(s)
This is the deck mechani layout.


All times are GMT +1. The time now is 8:24 am.

Powered by vBulletin®
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Copyright ©2002 - 2023, Paul Stenning.