UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV 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

Notices

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

Closed Thread
 
Thread Tools
Old 6th Feb 2021, 2:49 pm   #61
DMcMahon
Dekatron
 
DMcMahon's Avatar
 
Join Date: Apr 2019
Location: Worthing, West Sussex, UK.
Posts: 6,587
Default Re: Akai 1800 Check Out

Quote:
Originally Posted by ms660 View Post
The one in the photo also acts as a grounding point so far as I can see.

Lawrence.
Yes Lawrence you are correct, the top screw of the pillar which secures down onto the LC-503 board makes physical contact with some artwork that has to be grounded, there is no other connection on that artwork section that would pick up a ground connection elsewhere.

David
DMcMahon is offline  
Old 6th Feb 2021, 10:53 pm   #62
DMcMahon
Dekatron
 
DMcMahon's Avatar
 
Join Date: Apr 2019
Location: Worthing, West Sussex, UK.
Posts: 6,587
Default Re: Akai 1800 Check Out

Fitted quick disconnects to the speaker cables to make it a lot easier to reconnect/disconnect.
Attached Thumbnails
Click image for larger version

Name:	IMG_20210206_214526510.jpg
Views:	58
Size:	55.7 KB
ID:	226129  
DMcMahon is offline  
Old 27th Feb 2021, 4:50 pm   #63
Aub
Nonode
 
Aub's Avatar
 
Join Date: Mar 2005
Location: Nuneaton, Warwickshire, UK.
Posts: 2,034
Default Re: Akai 1800 Check Out

Any updates?

Cheers

Aub
__________________
Life's a long song, but the tune ends too soon for us all.
Aub is offline  
Old 27th Feb 2021, 5:27 pm   #64
DMcMahon
Dekatron
 
DMcMahon's Avatar
 
Join Date: Apr 2019
Location: Worthing, West Sussex, UK.
Posts: 6,587
Default Re: Akai 1800 Check Out

Will be soon, as always got sidetracked on other things and additionally family matters.

David
DMcMahon is offline  
Old 27th Feb 2021, 7:27 pm   #65
Aub
Nonode
 
Aub's Avatar
 
Join Date: Mar 2005
Location: Nuneaton, Warwickshire, UK.
Posts: 2,034
Default Re: Akai 1800 Check Out

Cheers David
__________________
Life's a long song, but the tune ends too soon for us all.
Aub is offline  
Old 8th Sep 2021, 1:16 pm   #66
Cobaltblue
Moderator
 
Cobaltblue's Avatar
 
Join Date: Dec 2010
Location: Exeter, Devon and Poole, Dorset UK.
Posts: 6,824
Default Re: Akai 1800 Check Out

Reopened my OP request.

Cheers

Mike T
__________________
Invisible airwaves crackle with life or at least they used to
Mike T BVWS member.
www.cossor.co.uk
Cobaltblue is online now  
Old 8th Sep 2021, 4:47 pm   #67
Aub
Nonode
 
Aub's Avatar
 
Join Date: Mar 2005
Location: Nuneaton, Warwickshire, UK.
Posts: 2,034
Default Re: Akai 1800 Check Out

Oh drat. I thought there was an update

Aub
__________________
Life's a long song, but the tune ends too soon for us all.
Aub is offline  
Old 8th Sep 2021, 7:06 pm   #68
DMcMahon
Dekatron
 
DMcMahon's Avatar
 
Join Date: Apr 2019
Location: Worthing, West Sussex, UK.
Posts: 6,587
Default Re: Akai 1800 Check Out

I asked for this closed Thread to be re-opened as I plan soon to get back and progress the 1800 (I can hear Aub thinking "about time"

Co-incidentally today received PM from Australia asking for some 1800 information that I will provide via this Thread.

David
DMcMahon is offline  
Old 8th Sep 2021, 9:09 pm   #69
DMcMahon
Dekatron
 
DMcMahon's Avatar
 
Join Date: Apr 2019
Location: Worthing, West Sussex, UK.
Posts: 6,587
Default Re: Akai 1800 Check Out

Photos attached show the 18 way connector that connects the electrical chassis wiring to the edge connector on the 8 track cartridge tape player unit. This is to support issue in Australia where connector has broken and all the wires have come out of the connector.

The connector pins are numbered 1 to 18, in first photo pin 1 with red wire is on the left hand side. In second photo the connector is rotated so that pin 1 with the red wire is on the right hand side. Pins 4 & 5 are linked at the connector with black wire going to pin 5, pins 10 & 11 are linked together with brown wire going to pin 11 & pins 17 & 18 are linked with mauve wire going to pin 18.

All the connections agree as far as I can see with the 1800L schematic.

Note that as referenced in an earlier Post some variants of the 1800 particularly Roberts clones may use a different 8 track deck, although the external wiring looks probably the same. But also note that the schematic for the Roberts 1725-8L III identifies the pins of the 18 way connector the opposite way, i.e. it identifies pin 1 (red wire) as pin 18 and so on until pin 18 (mauve wire) is identified as pin 1.

David
Attached Thumbnails
Click image for larger version

Name:	Pin 1 on left.jpg
Views:	60
Size:	76.3 KB
ID:	240882   Click image for larger version

Name:	Pin 2 on right.jpg
Views:	49
Size:	73.2 KB
ID:	240883  
DMcMahon is offline  
Old 8th Sep 2021, 9:48 pm   #70
mwezner
Diode
 
Join Date: Aug 2021
Location: Gold Coast, Queensland, Australia.
Posts: 1
Default Re: Akai 1800 Check Out

Thank you for the pictures. This will definitely help me get mine back together.
mwezner is offline  
Old 9th Sep 2021, 8:46 am   #71
DMcMahon
Dekatron
 
DMcMahon's Avatar
 
Join Date: Apr 2019
Location: Worthing, West Sussex, UK.
Posts: 6,587
Default Re: Akai 1800 Check Out

Hopefully you can get the connector wiring sorted OK.

My tape counter (ref Post 40) also has the crumbling metalwork but not as bad as yours.

David
DMcMahon is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 11:52 am.


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


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