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 > Other Vintage Household Electrical or Electromechanical Items

Notices

Other Vintage Household Electrical or Electromechanical Items For discussions about other vintage (over 25 years old) electrical and electromechanical household items. See the sticky thread for details.

Closed Thread
 
Thread Tools
Old 30th Sep 2023, 10:54 am   #1
pudwink
Pentode
 
Join Date: Jan 2011
Location: Nottingham, Notts. UK.
Posts: 207
Default 1975 Sinclair Black Watch Help If Possible

Hi All
I have been after one of these watches for years and recently purchased one but as normal with these it is faulty when batteries are put in it you get a led lighting up so it has some life.
I have removed the module and the back circuit has some issues
As you can see in the pic there is a break and a track lifted on the red side and track lifted on the blue side but can't work out if they should be connected to anything.
If anyone can help I would be very grateful.
Many Thanks
Attached Thumbnails
Click image for larger version

Name:	Sinclair Watch Circuit.jpg
Views:	317
Size:	17.5 KB
ID:	285786  
pudwink is offline  
Old 30th Sep 2023, 11:03 am   #2
Cobaltblue
Moderator
 
Cobaltblue's Avatar
 
Join Date: Dec 2010
Location: Exeter, Devon and Poole, Dorset UK.
Posts: 6,857
Default Re: 1975 Sinclair Black Watch Help If Possible

I think I know where my Black Watch is if so I'll drag it out of hiding later hopefully in the mean time someone will have one to hand.

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 30th Sep 2023, 9:45 pm   #3
Robsradio
Heptode
 
Join Date: Nov 2010
Location: Isle of Wight, UK.
Posts: 557
Default Re: 1975 Sinclair Black Watch Help If Possible

Most of these were killed by static discharge, all the nylon clothes back in the day and a plastic case didn’t help, hope it isn’t dead as they were a horological milestone in the 70s
Robsradio is offline  
Old 30th Sep 2023, 10:02 pm   #4
Cobaltblue
Moderator
 
Cobaltblue's Avatar
 
Join Date: Dec 2010
Location: Exeter, Devon and Poole, Dorset UK.
Posts: 6,857
Default Re: 1975 Sinclair Black Watch Help If Possible

Mine wasn't dead at the time of non use just that LCD's had arrived.

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 1st Oct 2023, 4:13 pm   #5
Cobaltblue
Moderator
 
Cobaltblue's Avatar
 
Join Date: Dec 2010
Location: Exeter, Devon and Poole, Dorset UK.
Posts: 6,857
Default Re: 1975 Sinclair Black Watch Help If Possible

Well I found it and weedled it out of its case (fortunately I still have the assembly instructions)

These pics help?

Looks as if the Flexi PCB is substantially different

Cheers

Mike T
Attached Thumbnails
Click image for larger version

Name:	20231001_160852.jpg
Views:	181
Size:	56.8 KB
ID:	285844   Click image for larger version

Name:	20231001_160857.jpg
Views:	163
Size:	64.4 KB
ID:	285845   Click image for larger version

Name:	20231001_160901.jpg
Views:	162
Size:	62.5 KB
ID:	285846   Click image for larger version

Name:	20231001_160956.jpg
Views:	172
Size:	96.7 KB
ID:	285847  
__________________
Invisible airwaves crackle with life or at least they used to
Mike T BVWS member.
www.cossor.co.uk
Cobaltblue is online now  
Old 2nd Oct 2023, 12:55 am   #6
pudwink
Pentode
 
Join Date: Jan 2011
Location: Nottingham, Notts. UK.
Posts: 207
Default Re: 1975 Sinclair Black Watch Help If Possible

Hi Mike T
Thank you for taking the time to upload your pictures this is the problem I am having the only pics I can find of the flexi pcb are different to my version.
You say you have the assembly instructions is there anything on there that may be of use to me.
Many Thanks
pudwink is offline  
Old 2nd Oct 2023, 8:07 pm   #7
Cobaltblue
Moderator
 
Cobaltblue's Avatar
 
Join Date: Dec 2010
Location: Exeter, Devon and Poole, Dorset UK.
Posts: 6,857
Default Re: 1975 Sinclair Black Watch Help If Possible

Sadly not much there is some detail of the tracking but I don't know how accurate it is

I'll attach the pictures sadly the instructions were damaged some time ago due to a water leak.

Cheers

Mike T
Attached Thumbnails
Click image for larger version

Name:	20231002_200117.jpg
Views:	91
Size:	35.0 KB
ID:	285882   Click image for larger version

Name:	20231002_200041.jpg
Views:	91
Size:	31.8 KB
ID:	285883  
__________________
Invisible airwaves crackle with life or at least they used to
Mike T BVWS member.
www.cossor.co.uk
Cobaltblue is online now  
Old 2nd Oct 2023, 8:42 pm   #8
Sideband
Dekatron
 
Sideband's Avatar
 
Join Date: Oct 2003
Location: Croydon, Surrey, UK.
Posts: 7,566
Default Re: 1975 Sinclair Black Watch Help If Possible

I seem to recall there were a couple of versions of these watches. A friend of mine built one but never got it working. (I think it was static damage). He sent it back to Sinclair and they simply replaced it....with one that looked identical but had a date function.

I seem to recall that it ate batteries...at least the one I built did. I did get it very accurate though....better than a second a week (which is rubbish by todays standards.....)
__________________
There are lots of brilliant keyboard players and then there is Rick Wakeman.....
Sideband is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 5:12 pm.


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.