[Jukebox-list] Rockola 429

[Graeme Harvey]

G'day Ron, When a relay becomes "magnetized" does the paper card stop the 
problem temporally or is it an indication the relay is pulling in.   Is 
there a way to "de-magnetize" the relay ?
Graeme Harvey
----- Original Message ----- 
From: "Ron Rich" <ronnnrich at yahoo.com>
To: "Jukebox mailing list" <jukebox-list at lists.netlojix.com>
Sent: Saturday, December 08, 2007 2:57 PM
Subject: Re: [Jukebox-list] Rockola 429


> Len, if I am recalling right, you said in an earlier post that this was an 
> "intermittent" problem, that was getting "worse".
>  If so, Jim's post has jogged my memory. Two things beside what Jim posted 
> come to mind. 1.Despite what "Micro Switch" says, it IS possible for them 
> to "click" (trigger or switch) at a different point in the cycle at 
> different times. If there is any question, replace the switch.
>  2. Relays also sometimes become "magnetized". When this happens, the 
> armature "sticks" to the pole piece--sometimes for just a fraction of a 
> second. A quick,easy test for this is to slide a paper the size and 
> thickness of a title strip under the armature. Also, once in a while, the 
> fiber that holds the blades comes loose at the point of attachment to the 
> metal--this can cause delays in pulling or relaxing. (this is true for 
> "open" type relays--not "ice cube" plug in types)  Ron Rich
>
> dirksenj at bellsouth.net wrote:
>  As the gripper arm opens inside the basket and microswitch #1 operates, 
> it
> does two things - it opens the circuit to the reversing relay coil causing
> it to drop out, and also starts the basket motor turning. We know the
> microswitch is operating since you say the basket motor takes off. Be
> careful adjusting this cam - you may cause the basket motor to take off
> while the gripper is still closed, thus ruining your records. I suspect 
> you
> have a problem with the dynamic braking of the gripper motor. Check to see
> if the reversing relay is relaxing immediately. If so, check the normally
> closed contacts on this relay - they complete the short circuit across the
> gripper motor to stop it instantly. Good luck,
>
> Jim
> ----- Original Message ----- 
> From: "Len Ralkie"
> To: "Jukebox mailing list"
> Sent: Thursday, December 06, 2007 11:38 PM
> Subject: [Jukebox-list] Rockola 429
>
>
> A while ago I started getting a "clunk"when the record was placed in the
> magazine and the magazine started to turn. Tonight I removed the turntable
> to get a better look. What is happening is the gripper motor is still
> working for a split second when the magazine starts to turn. Because the
> motor is still working for that split second this causes the gripper motor
> gear to jump a tooth as the gripper is as far as it can go. I tried
> adjusting the cam and the # 1 micro switch but it continues. Any 
> suggestions
> as to what else might cause the gripper motor to continue.
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