Vintage DD turntables. Are we living dangerously?


I have just acquired a 32 year old JVC/Victor TT-101 DD turntable after having its lesser brother, the TT-81 for the last year.
TT-101
This is one of the great DD designs made at a time when the giant Japanese electronics companies like Technics, Denon, JVC/Victor and Pioneer could pour millions of dollars into 'flagship' models to 'enhance' their lower range models which often sold in the millions.
Because of their complexity however.......if they malfunction.....parts are 'unobtanium'....and they often cannot be repaired.
128x128halcro
Dear Halcro, There is nothing as cruel as the thruth.No wonder only a small part of the human kind pretend to be interested in the real truth: the scientist. I want mention the assumptions about the spead of light and their reaction about possible refutation of Einstein. Refusing to except anything else is some evidence of the mentioned 'pretending'. Why do you want to scare us? From the other thread in which you are also involved it follows that there are no good TT's whatever. I was not able to comprehend the arguments but well to understand the conclusion. My only consolation is the fact that I never bought those astronomic expensive plinths nor the similary expensive TT.

Dear Lew, There is one Victor TT 101 on the German ebay for
1000 Euro and if you like to prove that you are right you
are welcome to try. Halcro warned me just in time to avoid
my temptation.

Regards,
I have to agree with Lewm on this one. I made my living for decades servicing all sorts of audio gear. I would regard it as highly unusual to see a chip failure!!

That is worth repeating: I would regard it as **highly unusual** to see a chip failure!!

Usually you see dirty switches and controls that result in poor speed regulation, electrolytic caps failing- that sort of thing.

So I would see an explanation like this as a bid for a lower price on a prospect.

Now, if you live in a tropical environment, the chips are in a little more danger, from corrosion. If you want some simple protection, you can 'pot' the chips with silicon sealer, the clear kind similar to aquarium sealer. I should point out though that in tropical environments the circuit boards in general are in great danger, so usually you have other concerns that far outweigh the chips... In non-tropical environments this is probably not an issue.

These days I do far less servicing than I used to, but I still maintain my own vintage analog synthesizers that I play in my band. They use a lot of unobtainium chips too! I would say the major force that causes the price of such ICs to rise on eBay is mis-diagnosis of other problems in the synth (usually bad connectors and electrolytics)! I see it all the time....

Dear �Nandric, Go ahead and buy that TT101, if you want it. Here is a URL for the owners manual AND the service manual, which can be downloaded from Vinyl Engine:

http://www.vinylengine.com/library/jvc/tt-101.shtml

Armed with the service manual, any really good technician worthy of the name can repair the TT101, save for the "unobtainium" chips, that might not be so unobtainable. To add to Ralph's cautionary comments, I would say that the first thing to do after acquiring a vintage dd with unknown service history is to have all the electrolytic capacitors replaced. After 20-30 years, it is quite likely that at least some of the caps are leaky or otherwise defective. Leaky caps can lead to destruction of one of those precious ICs. Also note (Mgreene) that no vendor asked me to purchase the Denon chip in bulk. I had the choice to buy only one or as many as I wanted.

In the US, Bill Thalmann of Music Technologies in Springfield, VA, can repair any of these tables, is extremely smart and honest, and is an audio hobbyist as much as we all are. Music Technologies has a website.
Dear Lew, I am not a brave man and have no intention whatever to prove enything. This peculiar TT 101 was already bought and returned to the seller by Halcro. I would never dream to prove Halcro wrong in enything. But I thought that you wanted to prove something so this info about German ebay was meant for you. Ie I am willing to buy the thing for you but this would be an unnecessary
postage complication: from Hong Kong to Holland and than
from Holland to the USA. You can buy the thing directly by
the seller in Hong Kong (Foxtan or so).
However I need to mention that I just got from Moldova
( no typo) the plinth for my SP 10 MK II. For $ 180 all included. With 4 leayers of MDF and black spray. The problem however is I have no idea what to do with this TT.
No place in my living room for a second TT and my bedroom
is already occupied with some other stuff.

Regards,
Dear Nandric, I read a little about the new data that call into question the actual speed of light. Compared to other previously existing data that confirm the Theory of Special Relativity, I think the data from CERN are rather weaker. I am going with Albert on this one.