Edison DD reproducer problem

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phonogal
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Edison DD reproducer problem

Post by phonogal »

While playing a record on my W 250 I noticed the record skipped but just chocked it up to a bad groove in the record. I tried another record and the same thing happened. I checked to make sure there was not a problem with mechanism that moves the horn and reproducer and then played the record again. I noticed that as the reproducer moved closer to the end of the record, the pin that floats in the little loop on the front was touching the side of the loop and not allowing the slight side to side movement so the record would skip(the pin was in the center of the loop at the bottom when the record was started). I started the record over holding the pin over to the outside of the loop and it played though with no problems (the pin was closer to the inside at the end of the record). How can I fix this? Thanks, Jan.

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De Soto Frank
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Re: Edison DD reproducer problem

Post by De Soto Frank »

Sometimes that limit pin gets bent if the machine was moved carelessly with the reproducer installed... it should project straight-out from the floating weight, along the same axis as the horn-arm and reproducer mount.

If is is bent to one side or up or down, you can carefully straighten it with some small needle-nose pliers.

I think it's impossible for a DD player to mis-track, as a result of the feed-screw getting out of order ?
De Soto Frank

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Re: Edison DD reproducer problem

Post by larryh »

I tired that bending of a limit pin once that had been damaged in shipping and it broke off at the body when I applied some pressure too it.. So be careful if you undertake trying to straighten one.. I believe somewhere in the Edison repair literature there is something about the relationship between the gears and the horn that can be effected in some way, but I may have dreamed that? Generally when my machines do that its because I haven't be careful to set the stylus in the first groove with the record still. Often they will move toward one side if they have a chance in the run in of the starting. Or swinging the arm and setting the reproducer down quickly can throw it towards one side as well.

Larry

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phonogal
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Re: Edison DD reproducer problem

Post by phonogal »

De Soto Frank wrote:Sometimes that limit pin gets bent if the machine was moved carelessly with the reproducer installed... it should project straight-out from the floating weight, along the same axis as the horn-arm and reproducer mount.

If is is bent to one side or up or down, you can carefully straighten it with some small needle-nose pliers.

I think it's impossible for a DD player to mis-track, as a result of the feed-screw getting out of order ?
The pin is straight and starts out in the middle of the loop when the record starts. It gradually works closer to the left side of the loop as the record plays. When the record is near the end the pin is too close to left side of the loop and causes the record to skip. i checked the feed part without the reproducer on the machine and can see no problem with it.

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phonogal
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Re: Edison DD reproducer problem

Post by phonogal »

Just tried a reproducer from another machine and exact same thing happened so it's not the reproducer. Any other ideas? Thanks, Jan

52089
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Re: Edison DD reproducer problem

Post by 52089 »

The New Edison Disc Motor Manual, which I think is posted here somewhere, discusses this problem. Unfortunately it is copy protected so I can't copy and paste.

The gist of the solution is to bend the horn very slightly towards or away from the control lever. If the pin rubs against the left side of the loop, bend the horn slightly farther away from the control. If it hits the right side, bend the horn slightly towards the control.

There is no indication of what "slightly" means, only a warning not to bend too far in either direction.

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Re: Edison DD reproducer problem

Post by CDBPDX »

Could be a couple things out of whack. Be sure the bottom of the pivot post attached to the front of the horn is properly seated in the hole at the bottom of the cabinet. Next, be sure that the turntable is level in relation to the cabinet. If the motor mount on one side is higher than the other side, there could be an alignment issue between the horn/reproducer and turntable. Another thing to check is the plate attached to the pivot post near the top of the horn that rides on the horn moving gear. Sometimes the adjustment screw for that will come loose and that will allow the plate to slide up and not seat right on the gear.

One more thing, make sure the top and bottom plates that attach the pivot pole to the horn are still attached to the horn. Sometimes, the solder that secures those plates to the horn can break loose.

Also, if the screw that secures the pivot pole into the handle that raises and lowers the reproducer is loose, that could be the problem. It sounds like it is out of adjustment to begin with since the pin is at the bottom of the loop at the start. It should be about half way between bottom and top and about centered from side to side and stay that way all across the disc.

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Re: Edison DD reproducer problem

Post by alang »

52089 wrote:The New Edison Disc Motor Manual, which I think is posted here somewhere, discusses this problem. Unfortunately it is copy protected so I can't copy and paste.

The gist of the solution is to bend the horn very slightly towards or away from the control lever. If the pin rubs against the left side of the loop, bend the horn slightly farther away from the control. If it hits the right side, bend the horn slightly towards the control.

There is no indication of what "slightly" means, only a warning not to bend too far in either direction.
Here is the link to the Edison Motor Manual in the Archives section. It describes in detail why this may happen and how to fix it. http://forum.talkingmachine.info/viewto ... ?f=2&t=476

Good luck
Andreas

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phonogal
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Re: Edison DD reproducer problem

Post by phonogal »

alang wrote:
52089 wrote:The New Edison Disc Motor Manual, which I think is posted here somewhere, discusses this problem. Unfortunately it is copy protected so I can't copy and paste.

The gist of the solution is to bend the horn very slightly towards or away from the control lever. If the pin rubs against the left side of the loop, bend the horn slightly farther away from the control. If it hits the right side, bend the horn slightly towards the control.

There is no indication of what "slightly" means, only a warning not to bend too far in either direction.
Here is the link to the Edison Motor Manual in the Archives section. It describes in detail why this may happen and how to fix it. http://forum.talkingmachine.info/viewto ... ?f=2&t=476

Good luck
Andreas
Thanks for pointing me in the right direction. I was able to bend the horn enough to keep it from repeating. The pin still rides over to the left in the loop toward the end of the record so it probably needs to be bent a little more. Thanks again, Jan.

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Re: Edison DD reproducer problem

Post by Victrolacollector »

I had that problem, I think mine started working when I carefully bent the horn as the manual suggests. I also make sure the pin is centered as I carefully lower the reproducer into the first groove. I still notice the pin being a little off center give or take, but does not hit the limit loop. I think Edison made that limit loop a little too small. Thats my opinion.

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