Dansette Bermuda Mk2 1968 - UK Vintage Radio Repair and Restoration Discussion Forum

ROCKINGHAM2 · 5th Feb 2017, 3:43 pm

Hi, I have just got my player working since purchasing it a few years ago, can you tell me what the humming noise is when I turn the power on and also the stylus that is fitted is an ST20, is that the correct one?

Thanks, Alan.

Nuvistor · 5th Feb 2017, 4:15 pm

We need to know the cartridge to say if the ST20 is correct, the cartridge could have been replaced at some time in the past. Photo may help.

Can you describe the hum, there at first switch on or after a few minutes? I think the player is valve but if you could confirm if it is transistor or valve that may also help.

Others will give better advice than I can but they need information to help.

Frank

Michael Maurice · 5th Feb 2017, 5:02 pm

Is the humming loud and does it start as soon as you switch it on?

If yes then the fault is almost certainly caused by failure of the main smoothing capacitor.

Edward Huggins · 5th Feb 2017, 5:03 pm

Quote:

Originally Posted by Nuvistor

I think the player is valve but if you could confirm if it is transistor or valve that may also help.

It is valve.

ROCKINGHAM2 · 5th Feb 2017, 7:16 pm

Hi,
Thanks for the quick reply, the hummimng starts has soon as you turn the power on, if the cartridge is the part that the needle sits in, I can't see any identification on it.
Alan

AC/HL · 5th Feb 2017, 11:35 pm

In which case, could you provide a photo or two?

ROCKINGHAM2 · 6th Feb 2017, 8:05 pm

Hi,
The cartridge is an SC11M

Nuvistor · 6th Feb 2017, 10:31 pm

Cannot help with the stylus.

The humming noise, the player uses a series heater chain for the valves, its possible they are fed from the motor so I can only think it is the motor you can hear.

The smoothing/reservoir capacitors mentioned earlier would only start the player humming after the valves warm up.

So you will probably need to check the motor and its mounting rubber bushes, unless others have a better suggestion.

Take note that this will be a live chassis player, take suitable precautions against electric shocks.
Frank

martinhog · 6th Feb 2017, 10:46 pm

That is the correct stylus for that cartridge, however, it's not the original cartridge.

Edward Huggins · 7th Feb 2017, 12:19 pm

If the cartridge currently fitted is a BSR SC11M, you can still get replacement styli for these. Are the deck transit screws turned down (as they should be) to reduce vibrations/motor noise transmission?

Nuvistor · 7th Feb 2017, 4:16 pm

Quote:

Originally Posted by Edward Huggins

Are the deck transit screws turned down (as they should be) to reduce vibrations/motor noise transmission?

Such a simple thing that it's automatic for those in the know, a good suggestion Edward.

Frank

ROCKINGHAM2 · 24th Sep 2017, 10:05 am

Hi,

When playing an LP record on auto, why does the stylus arm sometimes drop too early and not make contact with the record, also what is the humming sound when switched on and can it be eliminated.

Thanks
Alan

AC/HL · 24th Sep 2017, 10:49 am

If you haven't already, read through this thread: https://www.vintage-radio.net/forum/...ad.php?t=75401

Edward Huggins · 24th Sep 2017, 12:24 pm

The stylus set down position can be easily adjusted. Your Thread has a gap of several months. So - is the humming a new type of hum or the same as before? Your player is valved and the we assume the hum starts after warm up.

peter_sol · 24th Sep 2017, 4:52 pm

Is the hum there with the volume control at minimum.
If so how loud

5th Feb 2017, 3:43 pm	#1
ROCKINGHAM2 Retired Dormant Member Join Date: Feb 2017 Location: Middlesbrough, Teeside, UK. Posts: 4	Dansette Bermuda Mk2 1968 Hi, I have just got my player working since purchasing it a few years ago, can you tell me what the humming noise is when I turn the power on and also the stylus that is fitted is an ST20, is that the correct one? Thanks, Alan.

5th Feb 2017, 4:15 pm	#2
Nuvistor Dekatron Join Date: Aug 2013 Location: Wigan, Greater Manchester, UK. Posts: 9,433	Re: Dansette Bermuda Mk2 1968 We need to know the cartridge to say if the ST20 is correct, the cartridge could have been replaced at some time in the past. Photo may help. Can you describe the hum, there at first switch on or after a few minutes? I think the player is valve but if you could confirm if it is transistor or valve that may also help. Others will give better advice than I can but they need information to help. Frank

5th Feb 2017, 5:02 pm	#3
Michael Maurice Moderator Join Date: Feb 2006 Location: Wembley, Middlesex Posts: 7,225	Re: Dansette Bermuda Mk2 1968 Is the humming loud and does it start as soon as you switch it on? If yes then the fault is almost certainly caused by failure of the main smoothing capacitor. __________________ Forum Moderator http://www.michaelmauricerepairs.co.uk/

5th Feb 2017, 7:16 pm	#5
ROCKINGHAM2 Retired Dormant Member Join Date: Feb 2017 Location: Middlesbrough, Teeside, UK. Posts: 4	Re: Dansette Bermuda Mk2 1968 Hi, Thanks for the quick reply, the hummimng starts has soon as you turn the power on, if the cartridge is the part that the needle sits in, I can't see any identification on it. Alan

5th Feb 2017, 11:35 pm	#6
AC/HL Dekatron Join Date: Nov 2003 Location: Heckmondwike, West Yorkshire, UK. Posts: 9,642	Re: Dansette Bermuda Mk2 1968 In which case, could you provide a photo or two?

6th Feb 2017, 8:05 pm	#7
ROCKINGHAM2 Retired Dormant Member Join Date: Feb 2017 Location: Middlesbrough, Teeside, UK. Posts: 4	Re: Dansette Bermuda Mk2 1968 Hi, The cartridge is an SC11M

6th Feb 2017, 10:31 pm	#8
Nuvistor Dekatron Join Date: Aug 2013 Location: Wigan, Greater Manchester, UK. Posts: 9,433	Re: Dansette Bermuda Mk2 1968 Cannot help with the stylus. The humming noise, the player uses a series heater chain for the valves, its possible they are fed from the motor so I can only think it is the motor you can hear. The smoothing/reservoir capacitors mentioned earlier would only start the player humming after the valves warm up. So you will probably need to check the motor and its mounting rubber bushes, unless others have a better suggestion. Take note that this will be a live chassis player, take suitable precautions against electric shocks. Frank

6th Feb 2017, 10:46 pm	#9
martinhog Pentode Join Date: Aug 2005 Location: Ashford, Kent, UK. Posts: 204	Re: Dansette Bermuda Mk2 1968 That is the correct stylus for that cartridge, however, it's not the original cartridge.

7th Feb 2017, 12:19 pm	#10
Edward Huggins Dekatron Join Date: Sep 2015 Location: Southwold, Suffolk, UK. Posts: 8,338	Re: Dansette Bermuda Mk2 1968 If the cartridge currently fitted is a BSR SC11M, you can still get replacement styli for these. Are the deck transit screws turned down (as they should be) to reduce vibrations/motor noise transmission? __________________ Edward.

24th Sep 2017, 10:05 am	#12
ROCKINGHAM2 Retired Dormant Member Join Date: Feb 2017 Location: Middlesbrough, Teeside, UK. Posts: 4	Dansette Bermuda Mk 2 Hi, When playing an LP record on auto, why does the stylus arm sometimes drop too early and not make contact with the record, also what is the humming sound when switched on and can it be eliminated. Thanks Alan

24th Sep 2017, 10:49 am	#13
AC/HL Dekatron Join Date: Nov 2003 Location: Heckmondwike, West Yorkshire, UK. Posts: 9,642	Re: Dansette Bermuda Mk2 1968 If you haven't already, read through this thread: https://www.vintage-radio.net/forum/...ad.php?t=75401

24th Sep 2017, 12:24 pm	#14
Edward Huggins Dekatron Join Date: Sep 2015 Location: Southwold, Suffolk, UK. Posts: 8,338	Re: Dansette Bermuda Mk2 1968 The stylus set down position can be easily adjusted. Your Thread has a gap of several months. So - is the humming a new type of hum or the same as before? Your player is valved and the we assume the hum starts after warm up. __________________ Edward.

24th Sep 2017, 4:52 pm	#15
peter_sol Octode Join Date: Aug 2003 Location: Welwyn Garden City, Herts. UK. Posts: 1,906	Re: Dansette Bermuda Mk2 1968 Is the hum there with the volume control at minimum. If so how loud