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Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment. |
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20th Sep 2021, 2:33 pm | #21 |
Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,528
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Re: Record player ID and repair.
Cost is the logic here. Isolating transformers are dearer than an extra tapping on a motor winding that has to be there anyway or a dropper resistor.
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20th Sep 2021, 4:56 pm | #22 |
Hexode
Join Date: Aug 2005
Location: Lincoln, Lincolnshire, UK.
Posts: 261
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Re: Record player ID and repair.
I agree with Edward. My first thought on seeing the photo was that this is an early Fidelity player for exactly the reasons he has already stated.
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20th Sep 2021, 6:39 pm | #23 |
Dekatron
Join Date: Jun 2005
Location: Warnham, West Sussex. 10 miles south of DORKING.
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Re: Record player ID and repair.
Surprisingly a UF86 was made as this Mullard price list shows. I have never seen one in the flesh. J.
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20th Sep 2021, 6:42 pm | #24 |
Dekatron
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 13,454
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Re: Record player ID and repair.
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20th Sep 2021, 6:50 pm | #25 |
Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,528
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Re: Record player ID and repair.
Engage brain before posting! I was thinking of 40 or 50V heaters rather than a modest 12.6V but the EF86 is only a 200mA heater. I guess the five bob saving was the deciding factor.
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21st Sep 2021, 5:54 pm | #26 |
Dekatron
Join Date: Jun 2005
Location: Warnham, West Sussex. 10 miles south of DORKING.
Posts: 9,145
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Re: Record player ID and repair.
Oddly a guy is selling some valves in the wanted section and one of them is a UF86! Tales of the Unexpected signature tune spins in my head.. J.
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30th Sep 2021, 11:30 am | #27 |
Tetrode
Join Date: Aug 2020
Location: Dorking, Surrey, UK.
Posts: 88
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Re: Record player ID and repair.
sorry guys, pressure of work and life took me away for a few days ... looks like it's all been going on in my absence!
I've had a quick look but i can't see any easy way to get under the 'hump' which i presume hides the valves etc, I can't see my obvious fasteners and don't want to force it... Does anyone know how to get into it? excuse my ignorance if it's something simple I've missed! Last edited by JimFromSurrey; 30th Sep 2021 at 11:31 am. Reason: typos |
30th Sep 2021, 11:36 am | #28 |
Moderator
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Location: Ipswich, Suffolk, IP4, UK.
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Re: Record player ID and repair.
Do I spy three screws along the top of the hump?
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30th Sep 2021, 12:46 pm | #29 |
Moderator
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Re: Record player ID and repair.
One manufacturer did make a record player specifically for use for both AC & DC mains using two sets of UL valves one set used as an inverter to power the motor.
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1st Oct 2021, 11:10 am | #30 |
Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,528
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Re: Record player ID and repair.
This has been mentioned before:
https://www.vintage-radio.net/forum/...58&postcount=7 Anyone know the make/model?
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....__________ ....|____||__|__\_____ .=.| _---\__|__|_---_|. .........O..Chris....O |
1st Oct 2021, 11:25 am | #31 |
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Re: Record player ID and repair.
Back on topic please.
Can anyone advise the OP as to how to gain access to the valves?
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Graham. Forum Moderator Reach for your meter before you reach for your soldering iron. |
1st Oct 2021, 11:43 am | #32 |
Nonode
Join Date: Jun 2013
Location: Surbiton, SW London, UK.
Posts: 2,801
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Re: Record player ID and repair.
Remove the 3 screws - the rexine coating of the cover may have stuck after a long
period, so use a spray oil along the edges and allow to penetrate. Using a screwdriver, if you insert it where the mains cable enters at rear, gently force up the cover panel. |