Vintage Turntable Repair

[@MrDavidriese]

Nice video! I felt like Spock watching Kirk figuring out how to fight the Gorn in Arena. "He knows!"

[@JakevonSlatt]

Lol! I actually didn't realize it was a closed loop system until I checked the service manual!

[@rpointer07]

Jake, I'm going to try this to correct my beloved Sony PS-X45! Thank you for your content!!

[@JakevonSlatt]

Let me know if it works!

[@bellowphone]

Great gizmologizing, there. Now you've got a better turntable than you could probably buy new these days. I have a fine old belt drive Technics turntable that has played me many hours of music back in the day. The problem with it is that the motor bearings are worn out (it is now a Rumble King turntable). Replacing motor bearings would ordinarily not be a problem, except that in this case the housing for the motor is an amorphous plastic structure which is molded into the board itself. To disassemble it and replace the bearings would involve actually cutting the housing apart, and then most likely fabricating brackets to remount the assembly. I haven't looked at it in about two decades, and I never looked too deeply "under the hood", but my memory of it is that it just wouldn't be worth the effort.

[@JakevonSlatt]

Thanks Len! Yeah, there is a special place in heck for engineers that un-serviceable components!

[@sheep1ewe]

Great video as always! I guess those where quite expensive when it was new.

[@JakevonSlatt]

I just looked and a non-working one was selling for $250 on Reverb. I'm sure that's more than they were originally!

[@sheep1ewe]

​@@JakevonSlatt In my country HiFi things marketed at the "golden ear" club people often are ridiculously expensive, especialy if it is marked "tube amplifier" (if it's also marked Hammond, Marchall, B&O or something similar it tend to go up even higher...)(despite the fact i just bought a tecnically much better 1950s original tube ampifier hidden inside a damaged radio cabinet for about 6$ in the charity shop... which is interesting since people seem to just thow away all the parts inside those old cabinets and installing a 10$ China made circuitboard that realy sound like complete crap and an even worse speaker and call it a "restoration" before they try to sell it...). Ha ha

[@JakevonSlatt]

I think it's a truism that if you are old enough to have the funds to purchase "audiophile" equipment you are too old to hear the difference! My brother-in-law recently brought me a Mcintosh MC240 that he found in a barn. It was covered in rat poop and missing most of the tubes. We cleaned it up, spent about $100 on new tubes and sold it in a day on eBay for $2500. I kind of wanted to keep it but those tube amps are no good for the Oontz oontz stuff I listen too!

[@sheep1ewe]

@@JakevonSlatt Ah, those where realy beautiful! I can imagine sitting and watching the tubes at night. But, honestly i had probably done the exact same thing. I hawe currently only a duo block i built from scratch from old surplus military transmitter valves and the old radios, but that's just because it's my hobby to screw on old radios in the afternoons, tubes has in reality a lot of limitations, i agree with that, unless of course one are realy fanatic and build an entire rig with proper old scool horns, maybe in the future i will, but not now... ha ha Fun fact is that kC3 tubes where used in German weather balloons during the war, it had an electric heatercoil for thermal compensation on the outusde and transmitted a dynamic graph from an aneroid and as i assume a thermometerhead.

[@discoecultura76]

This detection head is a terrible problem, I once damaged the one on my PS-T25 and replaced it returning its speeds 33 and 45 to normal.

[@CherylTooy96]

Hello, do you have any experience repairing turntables with a built-in 45 adapter? Something like the Magnavox MX1700.

[@JakevonSlatt]

I’m afraid I don’t, sorry!

[@arrya5372]

Very nice find! Impressive work. I've had this model for two years now and I gotta say: these Sony's are underrated. AND fully automatic!? A very nice turntable indeed. I just bought a second on the used market a few days ago. The first one I I got started giving me a noticeable hum. When I move the rca cables in the rear of the table the hum got worse. Seems like something is loose or frayed. Any tips on where to look for a solution? Thank you should you respond.

[@JakevonSlatt]

That should be an easy fix! The audio side is completely separate from the main electronics and it should be easy to find the loose connections.

[@Padraigp]

How could i run a digital radio reciever through a valve radio to get that nice sound?

[@JakevonSlatt]

This Reddit thread talks about how, and the risks, www.reddit.com/r/vintageaudio/comments/1z01xl/how_would_i_ad_a_line_in_into_this_tube_radio/?rdt=32802