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Old 9th Nov 2017, 6:05 pm   #1
Hoddbod
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Default Dansette Challenge 100 Switches

Hi. I've managed to destroy the ON/OFF switch on my Dansette Challenge 100. Are new switches available? If not my machine is junk.

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Old 9th Nov 2017, 6:21 pm   #2
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Default Re: Dansette Switches

I assume it's combined with either the volume or tone control. In what way is it broken?

A photo might help, someone may have something suitable.
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Old 9th Nov 2017, 6:40 pm   #3
Edward Huggins
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Default Re: Dansette Switches

Quote:
Originally Posted by Hoddbod View Post
Are new switches available. if not my machine is junk.
Well it certainly will not be junk!
Either a replacement volume/on/off control can be fitted or - easier - the broken switch bypassed and you switch off at the mains wall socket. You then just use the volume control in th normal way. What skills so you have to safely do this?
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Old 9th Nov 2017, 6:41 pm   #4
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Default Re: Dansette Switches

The Dassette Challenge uses the 14-3 amplifier (I don't know of a Dassette Challenge 100 but perhaps the same amp?)

The 14-3 amp has a 1M volume control (presumably log law) and a 25k tone control. The diagram doesn't indicate but the mains switch is most likely part of the volume control.

So you'll want a 1meg log pot with DPSW.
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Old 10th Nov 2017, 11:45 am   #5
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Default Re: Dansette Challenge 100 Switches

Hi. It is an off/on volume control switch. where do i get a 1 meg pot with a DPSW?
It was my own fault for damaging it. The Control knob snapped of and my clumsy attempts to repair caused the damage. The parts in the Pot. are all loose and the power can't be switched off. Can the pot be repaired?
thanks for your replies.
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Old 10th Nov 2017, 12:01 pm   #6
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Default Re: Dansette Challenge 100 Switches

Quote:
Originally Posted by Hoddbod View Post
The parts in the Pot. are all loose and the power can't be switched off. Can the pot be repaired?

Thanks for your replies.

Hoddbod.
Possibly and you've nothing to lose by trying.

See here:-

http://www.vintage-radio.net/forum/s...0&postcount=36
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Old 10th Nov 2017, 1:12 pm   #7
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Default Re: Dansette Challenge 100 Switches

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Originally Posted by Hoddbod View Post
where do i get a 1 meg pot with a DPSW?
These can be bought from Maplins. You may need to saw off the 1/4" spindle to the correct length and then make the 7 solder joints. Is this something you feel you can do safely? As I already advised, a much easier and cheaper option is to by-pass the switch and use the wall mains socket switch. Again if you have any doubt about doing this safely, you can place a Post on this site asking for help from someone local to you. Please advise that you have read and understood this.
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Old 10th Nov 2017, 1:31 pm   #8
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Default Re: Dansette Challenge 100 Switches

I don't think Maplin do 1M LOG pots with a mains switch, but I'm happy to be corrected if you can post a link Edward.
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Old 10th Nov 2017, 2:06 pm   #9
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Default Re: Dansette Challenge 100 Switches

Last time I needed one (also for a Dansette) they didn't, so I bought a 1 meg lin with switch *and* a plain 1 meg log then transferred the switch over.
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Old 10th Nov 2017, 2:49 pm   #10
Edward Huggins
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Default Re: Dansette Challenge 100 Switches

Quote:
Originally Posted by Station X View Post
I don't think Maplin do 1M LOG pots with a mains switch, but I'm happy to be corrected if you can post a link Edward.
You're dead right and I am corrected. I guess I was relying on a long ago purchase. Cricklewood do have a SPSW version I know. Even so, we've yet to hear back as to which option the OP will go for - replacement or bypass, with maybe an inline switch added.
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Old 10th Nov 2017, 6:29 pm   #11
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Smile Re: Dansette Challenge 100 Switches

Hi,
I've had the same problem with record players in the past. If originality isn't an issue, I've just fitted a double pole toggle switch to the motor board or around the back.
Another dodge is to fit a double pole in-line table lamp switch into the mains lead. Although accommodating the earth lead (if fitted) may be tricky.
Just a thought.
Cheers, Pete.
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Old 10th Nov 2017, 9:28 pm   #12
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Default Re: Dansette Challenge 100 Switches

https://www.bowood-electronics.co.uk...9f7460e10fbd55

Select 1M from the drop down list
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Old 10th Nov 2017, 9:42 pm   #13
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Default Re: Dansette Challenge 100 Switches

You could replace the damaged volume control with a non-switched one, and the tone control with a switched 22K. More work, but they're cheap to buy.
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Old 11th Nov 2017, 3:04 pm   #14
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Default Re: Dansette Challenge 100 Switches

Hi. Reply to Nuvistor. is it a switch unit.? And how do i wire it up?

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Old 11th Nov 2017, 3:27 pm   #15
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Default Re: Dansette Challenge 100 Switches

It is a volume control with switch, I am presuming that’s what is in the player at the moment so should be wired the same way.
They stock quite a few values so make sure you select the correct one.

Aplogies if it’s not what you were wanting.

Edit. If there is any doubt, contact Bowood, they are usually at radio rallies and are very helpful.
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Last edited by Nuvistor; 11th Nov 2017 at 3:32 pm.
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Old 12th Nov 2017, 9:49 am   #16
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Default Re: Dansette Challenge 100 Switches

If you find a new switch/control, confirm the switch is rated for our mains voltage, 230 volts, they usually are but best to be sure.
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Old 12th Nov 2017, 11:03 am   #17
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Default Re: Dansette Challenge 100 Switches

To Nuvistor.
Bowood Electronics List Pot 004 as Logarithmic track DP Switch.25 diam. 9.5 diam. hole. But does not give voltage. And how many connections does it have.?
Many thanks for your advice
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Old 12th Nov 2017, 11:21 am   #18
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Default Re: Dansette Challenge 100 Switches

It will have 7 connections. 3 for the volume control and 4 for the mains on/off. You must wire it up as an exact copy of the original.
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Old 12th Nov 2017, 11:34 am   #19
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Default Re: Dansette Challenge 100 Switches

The Bowood site states that it has a D.P. (Double Pole) switch, so there will be 7 connections, three for the potentiometer (Volume control), of which the centre terminal is the wiper (variable part), whilst the LH tag (as viewed from the rear) is normally the common, usually negative, connection and the RH tag the input, to which the signal is connected. The switch, at the rear, will have two pairs of tags, one pair switches the mains neutral, the other the mains Live. Wiring this pot. should be a simple matter of noting which wires are connected where on the old control and transferring them correctly to the new one. Most Importantly. Do not mix up the connections to the mains live and neutral leads. I am assuming the vcontrols on this player are hard wired, rather than fitted on a Printed circuit board.
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Old 12th Nov 2017, 1:26 pm   #20
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Default Re: Dansette Challenge 100 Switches

Edward and Livewire has given you very comprehensive answers, no point me repeating the information.
Should be a straightforward replacement.
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