Rockola 440 pick up problem

I have a 440 that I have been restoring. It is working fairly well at this point but it won't pick up Q3 S3 T3 U3 OR V3, it will pick up all others. When selecting one of the above it trys to engage the selection on the wobble Plat but does not fully flip the lever. I have austen the selection mech per the book but still no good on these. I have cleaned the contact bUT again no results. Any suggestions or help will be appreciated. Thanks. Robert.

Robert, there is a small solenoid at the top of the pin wheel that assists the action of the pins when a punch occurs. It is mechanically connected via a small "U" shaped copper spring which sometimes breaks. When that happens the usual symptom is that most pins fail to shift when punched.

Check also for impacted dirt in the wheel that makes the affected pins harder to flip than others.

Finally, there is a capacitor in the credit unit section that determines the length and strength of the punch. When that loses capacitance the action becomes erratic.

This machine is nearly fifty years old. What, if anything has been rebuilt/restored in the last 20 years? If the amp, in particular has not been serviced, it could be headed for major failure if it is not done.

If you don't already have one, I suggest getting a service manual for this machine. Then you can determine both your current problem and how much repair/restoration work you are capable of.

Rob/NYC

thanks all fixed

No fair--Please--post what you found--how you fixed it , so that others may learn !
Thanks, Ron Rich

Hi
yes let us know it might help the other member with the rockola 442
Clones