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| Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment. |
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29th Jun 2021, 11:00 am
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#1 |
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Diode
Join Date: Jun 2021
Location: Bampton, Devon, UK.
Posts: 2
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Dansette Viva - no audio
Hi. Newbie to this group. I have some experience on fixing vintage stuff but been a while since last did one. I have been gifted a Dansette Viva record player. The component board inside is dated 17 Feb 1965.
It seems to work from a record deck perspective i.e. deck spins, arms work and speed can be changed. The UL84 lights up and gets hot. The rectifer (UY85) doesn't seem to heat up and can't see it glow - although it does warm up a bit possibly because it is next to the UL84. There is no audio at all i.e no clicks, hisses, white noise, scratching when touching the stylus - nothing. I have used another speaker and same. I am wandering around the board with an AVO but only get so far and don't have a circuit diagram. Any clues people? Thanks |
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29th Jun 2021, 11:27 am
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#2 |
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Dekatron
Join Date: Sep 2015
Location: Southwold, Suffolk, UK.
Posts: 8,344
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Re: Dansette Viva - no audio
The UY85 may slightly glow, but it still might have failed. If so there will be no HT supply, hence no sound. With your AVO, there should be c.220V from the UY85's Cathode. Also check the largish surge resistor for continuity which connects to its Anode. If the amplifier eventually tests out OK and the fault lies with the cartridge, then you can buy a direct replacement TC8H (listed as "H TC8") for £35-00. Be avised though that even if "brand new", this cartridge will not be suitable for playing Stereo LPs - and most LPs are.
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Edward. |
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29th Jun 2021, 11:56 am
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#3 |
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Moderator
Join Date: Dec 2010
Location: Exeter, Devon and Poole, Dorset UK.
Posts: 6,880
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Re: Dansette Viva - no audio
Hi Jon and welcome to the Forum
You can get the circuit here: https://www.service-data.com/product...15/1483/a11115 The UY85 and UL84 are in series so if the UY85 isn't glowing then there are a couple of possibilities that spring to mind: The UY85 has gone to air (the silver getter likely turned white) The UY85 has developed an internal short in the filament (got one that did that) Cheers Mike T
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Invisible airwaves crackle with life or at least they used to  Mike T BVWS member. www.cossor.co.uk |
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29th Jun 2021, 12:28 pm
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#4 | |
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Diode
Join Date: Jun 2021
Location: Bampton, Devon, UK.
Posts: 2
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Re: Dansette Viva - no audio
Quote:
The speaker has a tear in it which i'll need to replace but it is pretty lo-fi anyway so could probably get away with it as it is. Thanks for your help |
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29th Jun 2021, 1:48 pm
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#5 |
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Dekatron
Join Date: Feb 2007
Location: Leominster, Herefordshire, UK.
Posts: 16,536
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Re: Dansette Viva - no audio
Small tears in speaker cones respond well to tissue paper and diluted PVA (wood) glue patches.......
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....__________ ....|____||__|__\_____ .=.| _---\__|__|_---_|. .........O..Chris....O |
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30th Jun 2021, 10:12 am
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#6 |
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Octode
Join Date: Aug 2015
Location: Glasgow, UK.
Posts: 1,853
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Re: Dansette Viva - no audio
Just to endorse what Chris said above, a 50/50 mix of PVA/water and some tissue paper will fix any small tears but we don't know how extensive it is - picture please?
If you have any of the mix left over then apply this sparingly across the entire paper cone which will help to strengthen it. I know that others have recommended UHU or Copydex but I've never had any issues with PVA/water. 
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