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 Audio (record players, hi-fi etc)

Notices

Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment.

Closed Thread
 
Thread Tools
Old 23rd Jan 2022, 10:39 pm   #1
Vinyl Queen
Diode
 
Join Date: Jan 2022
Location: Sheffield, South Yorkshire, UK.
Posts: 2
Default Motor needed

Hi guys
New to the forum and wondered if anyone can help me.

Big vinyl fan, just acquired a Pilot tube amp record player with Monarch deck. I believe it to be a BSR UA12.

I am in need of a new motor or advice please
Attached Thumbnails
Click image for larger version

Name:	CFA11B3F-1221-40AC-839E-02EAC446B1EA.jpg
Views:	130
Size:	134.6 KB
ID:	250320   Click image for larger version

Name:	F0061E55-320A-46CE-A79E-1DD1AF88955D.jpg
Views:	153
Size:	80.4 KB
ID:	250321  
Vinyl Queen is offline  
Old 23rd Jan 2022, 10:49 pm   #2
paulsherwin
Moderator
 
paulsherwin's Avatar
 
Join Date: Jun 2003
Location: Oxford, UK
Posts: 27,788
Default Re: Motor needed

Can you describe the symptoms? Motor failure is very unusual.
paulsherwin is online now  
Old 23rd Jan 2022, 11:25 pm   #3
Vinyl Queen
Diode
 
Join Date: Jan 2022
Location: Sheffield, South Yorkshire, UK.
Posts: 2
Default Re: Motor needed

We plugged it in. It played for around a minute and then we could smell burning and saw smoke and it stopped.
See photo.
Attached Thumbnails
Click image for larger version

Name:	067D865F-0D3F-4019-AAD0-8B13266EB494.jpg
Views:	247
Size:	92.9 KB
ID:	250325  
Vinyl Queen is offline  
Old 24th Jan 2022, 12:23 am   #4
Herald1360
Dekatron
 
Herald1360's Avatar
 
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,528
Default Re: Motor needed

That looks well toasted! Unusual failure. Off chance- was the player set for 120V supply, perhaps?
What's the Pilot Model? It's possible a short in the amplifier could burn out the motor windings if a motor tap is used for heater supplies.
Ultimately a replacement motor or deck could probably be sourced, but a careful service of the valve amp may well be needed to avoid a further meltdown!
__________________
....__________
....|____||__|__\_____
.=.| _---\__|__|_---_|.
.........O..Chris....O
Herald1360 is offline  
Old 24th Jan 2022, 12:28 am   #5
Herald1360
Dekatron
 
Herald1360's Avatar
 
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,528
Default Re: Motor needed

Edit:

Looks like a Super 10 RC123

https://www.radiomuseum.org/r/pilot_super_10_rc123.html
__________________
....__________
....|____||__|__\_____
.=.| _---\__|__|_---_|.
.........O..Chris....O
Herald1360 is offline  
Old 24th Jan 2022, 9:38 am   #6
Edward Huggins
Dekatron
 
Join Date: Sep 2015
Location: Southwold, Suffolk, UK.
Posts: 8,302
Default Re: Motor needed

This would have used a motor tap for the "U" series valves. A 90V tapped donor motor from a suitable BSR UA12 or BSR UA14 will be needed. However a used (and more commonly available) replacement UA14 deck might be the easiest option.
__________________
Edward.
Edward Huggins is offline  
Old 24th Jan 2022, 11:36 am   #7
Nickthedentist
Dekatron
 
Nickthedentist's Avatar
 
Join Date: Jan 2005
Location: Oxford, UK.
Posts: 17,820
Default Re: Motor needed

To reiterate what Chris said, don't just fit a new motor. Find out if there's anything which killed it first!
Nickthedentist is offline  
Old 24th Jan 2022, 12:50 pm   #8
Herald1360
Dekatron
 
Herald1360's Avatar
 
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,528
Default Re: Motor needed

Having looked at the service info, (available here: https://www.service-data.com/product...26/6261/a14926 ), it would seem there is no motor tap but instead a dropping resistor for the valve heaters. The motor is connected via switches directly to the incoming mains supply.

So... it looks like a simple motor failure, unusual, but......

The suggestions for motor replacement are still valid- if you get one with a tapped winding, just ignore the tap.

There is still a need for an informed check and service to the valve amplifier. There are a few cheap and easily replaced parts (if you can solder) which can fail just with time and may cause other rather expensive parts to fail!
__________________
....__________
....|____||__|__\_____
.=.| _---\__|__|_---_|.
.........O..Chris....O
Herald1360 is offline  
Old 24th Jan 2022, 2:25 pm   #9
Heatercathodeshort
Dekatron
 
Heatercathodeshort's Avatar
 
Join Date: Jun 2005
Location: Warnham, West Sussex. 10 miles south of DORKING.
Posts: 9,145
Default Re: Motor needed

I may be wrong here but by the look of the picture the motor fitted does have a 90V tap.
I have never had a BSR motor fail and I must have repaired a large number of these over the years. Something odd here especially as it worked for a while.
By the look of the motor it appears to have an incorrect mangled fixing screw on the right.
It looks as if someone has been fiddling with the motor or replaced it and wired the mains across the 90V tap. A lot of heat has been produced. John.
Heatercathodeshort is offline  
Old 24th Jan 2022, 3:26 pm   #10
Herald1360
Dekatron
 
Herald1360's Avatar
 
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,528
Default Re: Motor needed

The deck looks like it's a 4-speed one.....
__________________
....__________
....|____||__|__\_____
.=.| _---\__|__|_---_|.
.........O..Chris....O
Herald1360 is offline  
Old 24th Jan 2022, 4:36 pm   #11
Chiltern
Heptode
 
Join Date: Dec 2008
Location: Somerset, UK.
Posts: 553
Default Re: Motor needed

Not sure if the BSR UA12 is a 3 or 4 speed unit, I do have this 4 speed motor if it is any use, it has a 90v tap.

Alan
Attached Thumbnails
Click image for larger version

Name:	ASIDSCN9246.jpg
Views:	63
Size:	46.4 KB
ID:	250413   Click image for larger version

Name:	ASIDSCN9247.jpg
Views:	60
Size:	49.1 KB
ID:	250414  
Chiltern is offline  
Old 24th Jan 2022, 6:33 pm   #12
Edward Huggins
Dekatron
 
Join Date: Sep 2015
Location: Southwold, Suffolk, UK.
Posts: 8,302
Default Re: Motor needed

Both the BSR UA12 and UA14 are 4 speed units.
__________________
Edward.
Edward Huggins is offline  
Old 24th Jan 2022, 9:40 pm   #13
Sideband
Dekatron
 
Sideband's Avatar
 
Join Date: Oct 2003
Location: Croydon, Surrey, UK.
Posts: 7,550
Default Re: Motor needed

Definitely needs proper investigation before a new motor is fitted. It does look like the motor has been messed with.
__________________
There are lots of brilliant keyboard players and then there is Rick Wakeman.....
Sideband is offline  
Old 25th Jan 2022, 7:52 am   #14
Diabolical Artificer
Dekatron
 
Diabolical Artificer's Avatar
 
Join Date: Jul 2009
Location: Sleaford, Lincs. UK.
Posts: 7,639
Default Re: Motor needed

That blue tape looks like a past attempt at a repair, indicative of a motor running on borrowed time.

Andy.
__________________
Curiosity hasn't killed this cat...so far.
Diabolical Artificer is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 2:28 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.