Vintage DD turntables. Are we living dangerously?

On the subject of "are we living dangerously", I would like to report to anyone who followed my travail with the TT101 on the "other" thread, where it was OT, that after my TT101 ran reliably for more than a week on our kitchen counter, I decided to spare my wife the sight of it and brought it down to my basement system, where I hope to use it. I plugged it in and turned on the Power, due to my (our?) conviction that keeping it powered on was advisable. I left it alone for about a week, because I was preoccupied with other issues. At that point, I tested the function again, ever the paranoid. Now the TT101 was malfunctioning again exactly as it had been doing previously: It starts up and runs for about 90 seconds. While running it displays speed errors, typically 33.32 or 33.34. Then it shuts itself down with no braking and the platter coasts to a stop. At this point, I have spent several hundred dollars with a machinist making alu parts to beef up the QL10 plinth, based on my previous confidence that the TT101 had healed itself. Out of curiosity, I moved the TT101 back up to our kitchen counter. In that locale, it malfunctioned for a while, just as it had done in the basement. However, within about a half hour, it had "healed" itself again, and now it is working perfectly, every time, on the kitchen counter. I am absolutely sure this problem is due to a poor electrical contact somewhere in the circuit, because the problem is associated with moving the unit around. I do not think this has anything to do with my basement or witchcraft. My plan is to take the top panel off and re-solder every contact on every switch. I am also concerned about the many multi-prong plugs that connect the various circuit boards. I don't know how to disassemble them in order to access the soldered joints within, but any one of them could be a culprit.

Thus I declare that the TT101 is the most "dangerous" vintage Japanese direct-drive tt of them all. I've never had any problems with any of the 5 or 6 others that I have owned that did not respond to the simple expedient of replacing the electrolytic capacitors.

Don't deny it. It is witchcraft!

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"Witchcraft", written by Harold Arlen and Johnny Mercer, is absolutely one of my favorite songs from the Great American songbook. But no one is running her fingers through my hair when I contemplate the TT101. Nor does the TT101 give me a "sly come hither stare". Voodoo, maybe.

Lew.

You may be onto something with the multi-prong plugs. It is likely that the individual male and female pins are crimped. Over time with dissimilar metals, wire and pin, along with a bit of humidity, electrolysis is possible/probable. I have with some gear pulled these connectors apart, cut the wire and soldered it back on to the pin. It is a real PITA since the new connection has to fit back into the plastic holder.
You could of course simply bypass the plugs altogether and solder the pairs.

Good luck with the Witch hunt.

Surprise, surprise! Thuchan is, his words, "now back to the DD camp."

Welcome back! :-)

PS, That's one lovely looking Sony PS-X9.


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