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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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Zenith F585W record changer
I'm trying to repair an old record changer that is part of a compact
stereo system. When I got it the turntable wouldn't spin. Apparently it was gummed up or something. After spraying some WD40 into the turntable bushing I finally got it apart and now the thing almost works. Now it is dropping the record on the tone arm. The tone arm moves in too soon or the record drops too late. Any ideas on what to look for and where? Too many moving parts for me Mike |
#2
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Zenith F585W record changer
You sort of answered your own question. These turntables are
mechanically complex for someone who is not used to them. There are radio and TV service shops that specialize in these types of repairs. If you feel you really like your unit, you should give it out for professional service, and have it done right. I am sure if you do some research you will find someone who will do this for you. I never use WD-40 in these types of motors, gears, and whatever. I disassemble all the mechanics, clean all the parts, re-assemble, and properly lubricate them where necessary. WD-40 makes a good un-seizing lubrication for rusted bolts, or very heavy duty type lubrication in industrial machinery, and etc. I never use it near electrical or electronic devices. It is also highly flammable when it comes to electrical applications. It can also damage electronic components. -- Greetings, Jerry Greenberg GLG Technologies GLG ============================================== WebPage http://www.zoom-one.com Electronics http://www.zoom-one.com/electron.htm Instruments http://www.zoom-one.com/glgtech.htm ============================================== Mike M wrote in message ... I'm trying to repair an old record changer that is part of a compact stereo system. When I got it the turntable wouldn't spin. Apparently it was gummed up or something. After spraying some WD40 into the turntable bushing I finally got it apart and now the thing almost works. Now it is dropping the record on the tone arm. The tone arm moves in too soon or the record drops too late. Any ideas on what to look for and where? Too many moving parts for me Mike |
#3
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Zenith F585W record changer
WD-40 makes a good un-seizing
lubrication for rusted bolts, or very heavy duty type lubrication in industrial machinery, and etc. WD-40 isn't even great for those purposes. It's a solvent, so it does work in unseizing stuck bolts, but it's terrible as a lubricant and there are better penetrants for unseizing stuff. WD-40 is primarily designed as a water displacer, hence the W and D. - Reinhart |
#4
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Zenith F585W record changer
The changer isn't worth the cost of a professional repair if it isn't
something simple. I was hoping someone could point me toward the area that controls the timing of the tone arm movement and record drop or point out common causes for the problem. It might be simple if you've ever had one apart. Otherwise... It has been decades since I worked on a record changer and I can't visualize that one but, in general, only a few things cause problems: the mechanism grease gets sticky and the rubber idler glazes over and slips. If sticky grease is the problem, take it apart and wash it out with some kind of solvent, then reassemble it. Sometimes a slipping idler can be buffed with emory cloth and be made to work again... more often it must be replaced. Common trouble spots include a sticking cycle wheel (wash and relube or just run it dry) and its components which include the end of record trip change mechanism lever. The lead-in groove arm drop position is adjustable on some changers but don't try to adjust out a fault caused by a gummy mechanism. If the turntable slows down or stalls in mid-cycle, the idler is probably bad. That's as far as my aged memory goes unless you can provide a pix of the underside of that changer. Ray |
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