| Electronics > Repair |
| [Done] Dumpster find high-end turntable Sony PS-4300 is it worth repairing? |
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| agent_power:
Hi all I found this turntable next to a dumpster on the road. It turns on and spins (and squeaks a little), but it's missing the counterweight and the automatic mechanism doesn't do anything. The cartridge and needle probably need replacing too and the audio cable is chewed up. Is this too far gone or worth repairing? I see that it's hard to find parts for it. Maybe it would be possible to machine or 3D-print a counterweight, if it doesn't have to be the exact one? |
| Gyro:
It looks as if it was expensive in it's day (~1976). It's direct drive, so the squeaking is a little worrying, maybe dry bearing. Whether the arm bearings are damaged is a bit of a lottery until you can get it to exactly balance and seesaw. You might get away with a new stylus at it probably has a moving magnet cartridge. As far as the counterweight, I don't think you will get anywhere with 3D printing (insufficient mass and attractiveness) unless you could incorporate a little lead slug. A better idea would be to get an aluminium cylinder turned. O rings are a good but basic way of fitting it onto the arm stub, as they would stop it sliding and provide some mechanical decoupling. Looking at images on the web, the original rotated on a coarse screw thread with the usual scale graduations. Best of all would be to go back to the dumpster and try to find the original as it probably fell off! I found an image of the underside, changing the arm cable would be a simple job. You have nothing to lose except time and the danger of disappointment at any stage... |
| BILLPOD:
Good Morning Agent_power, The fact you are asking opinions tells me you 'kinda want to'. Also ask yourself what would you do with it if you did rehabilitate it: would you use it or sell it? Myself, I would attack the motor issue and see if you can get rid of the squeaks and see if the speeds of the turntable are correct. Only after those items are taken care of would I attack other problems. If you can't get good spin on the turntable, the other problems are a moot point. That is my opinion. :popcorn: |
| agent_power:
--- Quote from: Gyro on October 27, 2024, 12:57:17 pm ---Best of all would be to go back to the dumpster and try to find the original as it probably fell off! I found an image of the underside, changing the arm cable would be a simple job. You have nothing to lose except time and the danger of disappointment at any stage... --- End quote --- Hi all, thanks for your suggestions. I actually went back to look for it and didn't find anything. It could very well be that it was dumped due to its condition. Yeah I'm mostly afraid of getting a replacement weight and then finding out it was for nothing --- Quote from: BILLPOD on October 27, 2024, 01:55:11 pm ---Good Morning Agent_power, The fact you are asking opinions tells me you 'kinda want to'. Also ask yourself what would you do with it if you did rehabilitate it: would you use it or sell it? Myself, I would attack the motor issue and see if you can get rid of the squeaks and see if the speeds of the turntable are correct. Only after those items are taken care of would I attack other problems. If you can't get good spin on the turntable, the other problems are a moot point. That is my opinion. :popcorn: --- End quote --- As I don't have any high-end turntable I would probably really use it myself. It's too ugly to be resold. If I get it spinning smoothly I will pursue further repairs, otherwise I'll probably part it out. Will get back to you with some results |
| agent_power:
Someone enlighten me, I took the motor apart and it seems to be maintenance free except for this ball at the bottom. Now that I see it I probably didn't even need to take the motor apart. What do clean and lubricate this ball with? It has some sticky grease on it. Do I understand correctly that the shaft doesn't need lube or would some fine oil be ok? Thanks |
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