reister211
Member
thanks
I used it and it appears to work.
I used it and it appears to work.
The bearing is the shaft the platter goes into.
Is this correct? I thought it was the housing bore in the frame assembly that contains the Oilite bearing(s), thus it is called the "main bearing well". The shaft, or technically the journal, which extends from the bottom of the platter goes into the main bearing well.
I believe the tip of the shaft has a machined hemispherical feature on it, which could be considered a bearing as well.
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Well, I picked up a 598 (with 990 tonearm) for what I thought was a reasonable price... Until I got home and realized that one channel was out and the cartridge had been broken and poorly repaired. Put a new cartridge on, but one channel was still out. I soldered new RCA connects onto the cable, but still nothing... So I thought I'd get into the tonearm and look for issues... Big mistake. When I unscrewed the tonearm from the plinth, the metal circular discs and a spring popped out. I unfortunately did not see how they were installed originally.
What I'm looking for are photos or explanation of how the spring and metal plates are secured under the tonearm assembly. After that I'll get back to the dead channel issues.
I appreciate any help in fixing what I hope will become my new favorite turntable!
...When I unscrewed the tonearm from the plinth, the metal circular discs and a spring popped out. I unfortunately did not see how they were installed originally.
I can't say for sure? It has 5 bands wound round as a coil, but with each end coming off into posts, one shorter and angles, one longer and straight. It has a round washer in the center of the coil, and a touch of mystery black goo on the long straight post.
Sorry for my terminology ignorance there... The spring attached to the screw with the lock washer is still attached, it is the other spring that has come off.
OK, I'll just take a picture...
Thanks for your help and all of the information you've provided in this forum, empirelvr!
I've got good news and bad news for you.
The good news is that is the cueing mechanism spring, and not needed for the proper operation of the tone arm itself.
The bad news is, you accidentially toasted the cueing mechanism.
I honestly have no idea how you would fix that. The fact it came off so easily makes me wonder if it was just hanging by a thread to begin with, unless you took a nutwrench to that part of the arm purposefully.
It's a shame you didn't see this thread earlier, you would have seen the warning in multiple posts to NOT try and disassemble the arm. :tears:
Hopefuly you've put the arm back together as best as you can.
As to your original problem, I would look to the contact points between the sled and the headshell for the source of your problem.
You have a road ahead of you to be sure. But if you can live without the cueing and forgo the dyna-lift feature, you should be alright once you take care of the sled/headshell junction issue.
All I did was unscrew the screw that runs through the metal discs... I presumed
that doing so detached this spring, but perhaps as you said it was already shot. Where would the spring go, were I to be able to somehow reattach it? between the plates? I was trying to figure out where the posts off the spring lodged, but I see no logical place. I'll try some deoxit on the contacts, but I'm starting to fear it's the tonearm wiring, and despite MaxSeven's encouragement, I don't want to put a modern tonearm on it, as the cost would likely exceed the value for me, not to mention the fact that I prefer my tables to be all original. I would certainly have enjoyed to use the table as it was meant to be used, with cueing and dyna-lift, but I'd settle for anything usable at this point.
All I did was unscrew the screw that runs through the metal discs... I presumed
that doing so detached this spring, but perhaps as you said it was already shot. Where would the spring go, were I to be able to somehow reattach it? between the plates? I was trying to figure out where the posts off the spring lodged, but I see no logical place. I'll try some deoxit on the contacts, but I'm starting to fear it's the tonearm wiring, and despite MaxSeven's encouragement, I don't want to put a modern tonearm on it, as the cost would likely exceed the value for me, not to mention the fact that I prefer my tables to be all original. I would certainly have enjoyed to use the table as it was meant to be used, with cueing and dyna-lift, but I'd settle for anything usable at this point.