PS-X4

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75Turntable
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Re: PS-X4

Post by 75Turntable » 19 Dec 2017 19:33

And by that I mean the speed buttons; 33 and 45 RPM. I did mine today, it had the exact same problem and it is solved! 8)

Legrace
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Re: PS-X4

Post by Legrace » 19 Dec 2017 20:24

75Turntable wrote:And by that I mean the speed buttons; 33 and 45 RPM. I did mine today, it had the exact same problem and it is solved! 8)
Thanks, will give that a try.

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Re: PS-X4

Post by 75Turntable » 20 Dec 2017 17:59

Be careful though, there are some very delicate parts in this switch that can easily bend/deform.
If you want I can post several pictures here of my undertaking with text if necessary.
Let me know if so, or need help.
Succes,
Dan

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Re: PS-X4

Post by Legrace » 20 Dec 2017 18:19

75Turntable wrote:Be careful though, there are some very delicate parts in this switch that can easily bend/deform.
If you want I can post several pictures here of my undertaking with text if necessary.
Let me know if so, or need help.
Succes,
Dan
Yes please, such help will be greatly appreciated. :D I only got as far as removing the bottom cover and wasn't sure what to do next.

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Re: PS-X4

Post by 75Turntable » 20 Dec 2017 20:16

Alright :wink: , I will post some pictures tomorrow along with some guidance.
You write that you've lifted off the bottom cover earlier, so I suppose I don't have point out that you have to remove the platter, rubber mat and just to be on the safe side, the headshell as well.
Oh and don't forget to secure the tone arm, the clip on the tonearm rest is wobbly on my X4, so best is to use something extra like a rubber band or some tape to secure the arm from dangling around.
If your turntable still has the dustcover, then it is also best to keep it on, and secure it also with some tape, to prevent it from opening when you turn it over. I had used on old shirt under the table for scratches.

It isn't all that difficult to solve your issue with the speed, the trick is to keep track of your handling by taking pictures each step of the way. Even if I can provide pics, because if there is something different in yours, then my pics won't be much of a help. Bare in mind that I have a 240V European version and yours will probably be an 110V, am I correct?

Now, place the the turntable upside down with the front (controls) facing you.
On the right you will find one of the feet, take it off by unscrewing it.
underneath you will see a metal bracket that is attached to the plinth with 2 screws.
Undo those 2 screws. (Remember to take pictures of the steps you make)
Take out the bracket and turn it over. Here you will see that there is a sliding mechanism that is operating a sliding switch. This is the culprit. To access the inside of this switch you will have to take the sliding mechanism off first by undoing the locking ring ( is that the correct word for it? :oops: ) on the side of the mechanism.
I don not have the pictures ready yet, and its best that I will help you further when I have those unless you can manage. Hope to post them tomorrow, otherwise friday.

Good luck,
Dan

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Re: PS-X4

Post by 75Turntable » 21 Dec 2017 06:10

This is the foot I was talking about
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The underside of the metal bracket
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The screws of the sliding switch
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75Turntable
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Re: PS-X4

Post by 75Turntable » 21 Dec 2017 06:29

Here you can see the locking ring, take it off using a screwdriver, but be careful, it can and probably will jump away. Best to keep your finger on it to prevent it from shooting away.
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When you've undone the locking ring take off the black spring with a pair of fine pliers, do not twist or damage the spring, it is used for the button switch function.
On the backside of the sliding switch there are 3 metal points bend over to hold the inside of the switch on each side. Here I do not have a clear picture of, but you'll get the idea. Use whatever is suitable for you to bend it backwards a bit to the point it sits straight up. Do not bend it back to far as it will break off. These points are pretty strong metal watch that you do not break off wires or when using a screwdriver, you poke you hands.
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If the 6 points are bend backwards you are able to take out the inside of the sliding switch and you will see these. These are the ones that are very delicate and bend and deform very easily. Use you fingers or a pair of tweezers to take them off gently. What's left over is the culprit! Use some alcohol to clean it, I have used a precision knife to scrape off the black corroded layer.
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Re: PS-X4

Post by 75Turntable » 21 Dec 2017 06:32

What's left over is the culprit! Use some alcohol to clean it, I have used a precision knife to scrape off the black corroded layer.
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Assemble everything backwards again and things should be working fine again.
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Legrace
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Re: PS-X4

Post by Legrace » 21 Dec 2017 18:16

I perform the service according to your excellent guide. But only 45 rpm speed is available to me once I put it all back together. Pushing the 33 button does not change anything. I wonder about the copper jumpers. I notice in picture they are biased towards one side, ie covering just the center and right copper blades of the switch. I did not put them back like this. Maybe this can be the problem?

Anyway I listen to both sides of a 12 inch 45 rpm disc and speed did not drift. That at least is encouraging.

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Re: PS-X4

Post by 75Turntable » 21 Dec 2017 19:16

Hi, the mechanism that has the copper plated strip, which is attached via the locking ring turns over the sliding switch. So what you're saying that in the picture the copper jumpers are on one side touching only the right and middle ones of the switch is just because it was disassembled in that way, either in mode of 33 or 45 rpm.
If they were on the middle and left side that is the other speed.

If I understand correct, you now have only 1 speed left (45 rpm) that is working the other (33 rpm) isn't working anymore because the button isn't functioning as it used to do before you took it apart?
If so, the only logic reason could be that you have made an error somewhere in reassembling the whole piece back together.
What is critical for the buttons to function properly is that you place the black spring back on exactly the way it came of. This piece along with the metal sliding mechanism (with the copper plated strip) if placed correctly are key.
If you can take some pics and post them.

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Re: PS-X4

Post by 75Turntable » 21 Dec 2017 19:27

You can also take a closer look at my pictures by clicking on them, they can be enlarged twice, maybe that gives a better idea how it should all be assembled.
Also check if there are wires that came loose during the all the fiddling :)

Legrace
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Re: PS-X4

Post by Legrace » 21 Dec 2017 19:50

Ahh I understand now about the jumpers, it make sense they are meant to slide back and forth, the essence of the switching! OK so I will double check my work again. If I cannot find the problem I will post pics. Maybe you will be able to spot something.

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Re: PS-X4

Post by 75Turntable » 21 Dec 2017 20:13

Yep I will do my best to help you. I you haven't posted pics here before, they must be under 1mb, if you have pics that are bigger than that, you can choose to alter the size in Paint, by choosing a lower pixel rate and then choose save as, with a different name as the original pic.
Good luck

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Re: PS-X4

Post by 75Turntable » 21 Dec 2017 20:30

Hi,
If you place your finger where the green arrow is on the right (and next on the left) as shown in the pic and press down, then you can see how the whole thing operates.
The same principle is done by the buttons. The tension of the black spring makes the speed switch slide from left tor right and vice versa.
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Legrace
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Re: PS-X4

Post by Legrace » 22 Dec 2017 15:23

I take it all apart again and reassemble. It look exactly like your picture. Switch is moving freely back and forth and spring action is good. But still no 33 rpm, now the platter just stops rotating. The switch contacts must not be engaging properly. Rather frustrating but I can see clearly now how it is all supposed to work so hoping 3rd time will be the charm. [-o<