Wurlitzer 2600 Lift arms stuck

[repairman]

 My Wurlitzer blew a 5A fuse.  I found out the right lift arm won't retract.  Also the left lift arm is up slightly. 

What could be causing the lift arms not to retract?

Any suggestions?

Thank you.

[repairman]

I forgot to mention that I did replace the 5A fuse.

[repairman]

Just checked.  The 5A fuse blew again.  I'm not sure what is causing the fuse to blow.  This is the 5A fuse on the Amplifier chassis.  The second from the left of four.

[jukeboxmarty]

Both F3 and F4 are 5amp fuses, but both involve the -28VDC power supply voltage.

If the motor is jammed, it can certainly take out this fuse.

[repairman]

Thanks, I will check out the 28vdc circuits.

[repairman]

It looks like the transfer mechanism is jammed.  I tried turning the motor by hand but I cannot get both transfer arms to retract.  One will retract but the other is up.  I can only turn the motor so far in either direction then it gets too hard to turn. 

Any ideas what could be wrong?

[jukeboxmarty]

One or both of the lift arms are probably jammed.

Sometimes the guide tips (AKA duck bills) on the end of the lift arms break or get out of position. Check to see if the guide tips are causing interference.

Are both arms raised into the carousel? Or just one? If both arms have raised past the bottom of the carousel they are likely to be jammed against the record dividers. In this case I would try to get the lowest arm freed by manually pulling it down by hand.

In normal operation both arms try to raise. One arm has clearance to go between the record dividers to lift the record. The other arm stops when it comes into contact and rests against the record divider directly above it.

Hope this helps... Hope this makes sense!

[repairman]

Thank you very much.  You were correct.  The guide tip on the right had a broken spring and remained open. 

I have to look for a replacement guide tip spring. 

One other question.  The needle brush cable is attached to the transfer switch cam follower.  I don't see how the cam follower returns once the cam pushes the arm out.  There is no spring attached to the follower to pull it back and keep the follower roller against the cam.  Am I missing a spring or something?  The photos in the manual do not show a spring.

Thanks again.

[jukeboxmarty]

No spring was required for proper 'transfer switch' operation, so they didn't include one.

As far as the 'mute and play switch', it requires a spring on the arm for actuation... so it's included.

[repairman]

Thank you for your help.

I'm not sure how the cam follower stays in contact with the cam without a spring.  I looked at the jukebox and if I move the lever to the left pulling the needle brush cable and moving the cam follower away from contacting the cam, the lever will stay there unless I move it back.  There is nothing that I can see to move the cam follower back in contact with the cam and thus moving the needle brush cable back to the right.   Could you please explain to me how the lever moves back?

I appreciate your help.

[jukeboxmarty]

The roller doesn't need to stay in contact with the cam until the large lobe rotates around to actuate the transfer switch. The lobe has enough height to overcome the gap between the roller and the cam.

If your transfer switch is actuating properly... everything's normal.

Jan 14, 2024 18:36:27 GMT repairman said:

Could you please explain to me how the lever moves back?

The lever moves back when the transfer switch actuates.

Getting the brush to operate correctly without excess slack in the cable is another story.

[repairman]

Thank you very much for your help.

I found out why the changer jammed.  The spring in the left guide tip broke.  This caused the guide tips both to fold to the rear and would not move up through the record selector and jammed the record selector.  I had to remove the guide tip from under the record selector to free the mechanism.

Thanks again.