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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Perished vinyl turntable mat
On a Technics SL QL1 otherwise failure of traverse.
The mat had turned rigid and fragile leaving light oil on the underlying platter. What has caused this (unknown history) ? is the oily stuff dangerous to human or materials? -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://home.graffiti.net/diverse:graffiti.net/ |
#2
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Perished vinyl turntable mat
On Jan 24, 9:07*am, "N Cook" wrote:
On a Technics SL QL1 otherwise failure of traverse. The mat had turned rigid and fragile leaving light oil on the underlying platter. What has caused this (unknown history) ? is the oily stuff dangerous to human or materials? -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list onhttp://home.graffiti.net/diverse:graffiti.net/ Well I wouldn't eat it but I'd clean it off with alcohols or my favorite, Xylene. Xylene DESTROYS styrenes but I assume the platter is cast aluminium (UK spelling?) which would not be bothered at all. If you're skittish about xylene wear gloves but in small amounts it doesn;t seem to bother my skin. GG |
#3
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Perished vinyl turntable mat
wrote in message
... On Jan 24, 9:07 am, "N Cook" wrote: On a Technics SL QL1 otherwise failure of traverse. The mat had turned rigid and fragile leaving light oil on the underlying platter. What has caused this (unknown history) ? is the oily stuff dangerous to human or materials? -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list onhttp://home.graffiti.net/diverse:graffiti.net/ Well I wouldn't eat it but I'd clean it off with alcohols or my favorite, Xylene. Xylene DESTROYS styrenes but I assume the platter is cast aluminium (UK spelling?) which would not be bothered at all. If you're skittish about xylene wear gloves but in small amounts it doesn;t seem to bother my skin. GG I know a chemist who is always banging on about phthalates, the dangerous to himans softener in soft plastic, in the environment. I am aware of powercords stored around perspex deck covers or "rubber" grommets stored in perspex drawers exuding something that "melts" the hard plastic. But then a bottle of culinary/dental clove oil , tipped over, and leaking will weld ball-point pens together. Anyone know chemically what this oil is that is presumably the softener in such "rubber" mats and grommets etc? -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://home.graffiti.net/diverse:graffiti.net/ |
#4
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Perished vinyl turntable mat
That oil (of cloves) is Eugenol. there is a good entry on Wikipedia about
it. "N Cook" wrote in message ... Anyone know chemically what this oil is that is presumably the softener in such "rubber" mats and grommets etc? -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://home.graffiti.net/diverse:graffiti.net/ |
#5
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Perished vinyl turntable mat
"N Cook" wrote in :
Anyone know chemically what this oil is that is presumably the softener in such "rubber" mats and grommets etc? http://en.wikipedia.org/wiki/Phthalates -- bz 73 de N5BZ k please pardon my infinite ignorance, the set-of-things-I-do-not-know is an infinite set. remove ch100-5 to avoid spam trap |
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