If that is the case then there must be in inner point in the record where that stops occurring. Is this the case or is it simply having to cue it down a second time that allows it to continue to play? Why this is critical is that there may be something that is causing the solenoid’s arm to withdraw. The circuit switches to a lower current setting to hold it extended which makes it susceptible to being bumped to release. As such I would try it with the outer platter removed and starting it. If it stays down, then you can very gently tap the cartridge inwards to see if it moves without raising until the end.
