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Restoring a Pioneer PL-630 Turntable

Discussion in 'DIY' started by pustelniakr, Dec 12, 2006.

  1. pustelniakr

    pustelniakr Silver Miner at Large Subscriber

    Messages:
    6,181
    Location:
    Tucson, AZ
    Tri-Flow is a teflon-bearing light lube (spray). The carrier evaporates away, leaving the residual lubricating elements behind. Spray a bit of Tri-Flow into its cap, and dip into the liquid with a wooden toothpick. Apply what you pick up to the motor shaft where it exits the housing, until you see a nice indication of wetness (but not too much). Both ends, if they are visible and accessible ( I don't remember). Spin the shaft for a bit, to distribute the lube, while it is still wet.

    Enjoy,
    Rich P
     
  2. Drugolf

    Drugolf AK Subscriber Subscriber

    Messages:
    2,677
    Location:
    Boise
    Great thanks, easy enough. Basically trying to get a little of the lubricant down into the shaft I am guessing. ?

    Also, the work I am doing is on a 610 - the non automatic version of teh 630. The user controls are therefore quite different with less of them. The 610 does not have a Start/Stop button which you dont have anything on for cleaning. it does have a arm lifter that looks the same. Is there anything that should be done to this for cleaning?
     
  3. pustelniakr

    pustelniakr Silver Miner at Large Subscriber

    Messages:
    6,181
    Location:
    Tucson, AZ
    The controls that rotate or move in and out a significant amount are OK for DeOxit. The ones that just move a very small amount, and provide a bit of click feeling, are snap dome switches, and attempts at cleaning them, in any way, will damage them.

    Enjoy,
    Rich P
     
  4. Ricktptman

    Ricktptman AK Subscriber Subscriber

    Messages:
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    I've got two of these and the first one (the one I've had the longest) did just fine after I went through it. But the second one has this troubling, persistent problem with speeding up well outside of normal parameters. (In excess of 78rpm, WELL in excess).
    But if I stop it, and start it again from a dead stop (while the tone arm still was still engaged) it will return to the correct (aligned) speed. Quartz Lock being engaged does not affect the problem. It does it on both "sides" of the speed control.
     
  5. pustelniakr

    pustelniakr Silver Miner at Large Subscriber

    Messages:
    6,181
    Location:
    Tucson, AZ
    You will likely need a proprietary control chip. I hesitate to tell you which one, because you will need an oscilloscope and service manual to begin troubleshooting. If a chip is needed, you will have to get one from a parts unit.

    Sorry for the bad news,
    Rich P
     
  6. Ricktptman

    Ricktptman AK Subscriber Subscriber

    Messages:
    225
    Location:
    United States
    Thanks, Rich. You are the MAN, when it comes to these 'tables. Your restorations were a big help in working on both of these. I actually DO have a parts carcass 630 that I've taken parts from for both of these units. (Fascia, Appearance type....)
    I'm sure I have the chip in the "sacrificial" unit. I have both an original SM (came with the parts sacrifice unit) and an Oscilloscope. Which chip? I may have two of them (exclusive of this third unit, which is otherwise really nice) if the chip's on the "Meter/Speed Control" board.
    Thanks in advance! (PM me, if that's preferable.....)
     
    Last edited: Feb 26, 2017
  7. pustelniakr

    pustelniakr Silver Miner at Large Subscriber

    Messages:
    6,181
    Location:
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    Start a new thread, begin it by restating your symptoms, and a list of your available parts and test equipment, then PM me a link to the new thread.

    Enjoy,
    Rich P
     
  8. Drugolf

    Drugolf AK Subscriber Subscriber

    Messages:
    2,677
    Location:
    Boise
    Finished the restoration of my PL-610 and it is working like a champ! Thanks Rich for this very helpful and informative thread. it was a lifesaver and made the project fun.

    Now on to the 630 that came along int he middle of my work on the 610 for a price I could not pass up.
     
    pustelniakr likes this.
  9. Honomo

    Honomo New Member

    Messages:
    4
    Hi Rich! First of all i´d like to thank you for your work, it helped me a lot so far. Sorry if my english is not good but i´m from Argentina (we speak spanish). I´ll try to explain my problem as good as i can to see if i can get any help.
    With the help of your guide i've succesfully repaired many things that were wrong with my unit. However i couldnt get to work properly the REPEAT MODE. Let me explain myself:
    1- when in press the start button, the tone arm lifts up and moves to the exact position it is supposed to (after some calibration of course, including all the steps in your tutorial). The record starts and plays ok until the end.
    2- when the records ends, the auto return function works ok an it returns to the rest position without any problem.
    3- if i press the stop button at any time, it will always work ok, leading the arm to its rest position an stopping the spinning of the platter.
    4- WHEN THE REPEAT BUTTON IS ON, the records stars playing ok until the end. The auto return works again ok , BUT when the arm moves towards the begining of the record to start again (to repeat), IT FAILS THE PLACE WHERE IT DROPS THE STYLUS, an it drops it about 1,5cm out of the record, outside the platter!!!

    I've checked a few things:
    - the pickup plate clears the bottom and edge of the optical sensor. I've read the service manual but i cant find any reason why it is working this way.
    - I thought that it might be in relationship whith the slits in the plate and the optical sensor, but i dont understand why it ONLY FAILS in the REPEAT mode.
    - Could the gear/plate "A"and the microswitches be involved?

    I'd really apreciate Rick and everyone else opinions about this. I love this turntable, and i dont trust anyone else to touch it, so i'm looking foward your help! Thank you very much in advance.
    Rodrigo
     
  10. pustelniakr

    pustelniakr Silver Miner at Large Subscriber

    Messages:
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    Location:
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    Common, and not correctable problem. There is no separate adjustment for the repeat drop point. Sorry.

    Enjoy,
    Rich P
     
  11. Honomo

    Honomo New Member

    Messages:
    4
    Thank you very much for your help Rick. That was a really fast response! I feel a little disapointed that it is not correctable, but i think i can live without the repeat function. This forum and this post are the best.
    Regards,
    Rodrigo
     
  12. Litesol

    Litesol New Member

    Messages:
    1
    Hi Rich ,

    Great tutorial!
     

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