Dave, does the relay in the speed unit pull in when a 45 mounts?

If so, the problem is either defective power supply in the speed unit or transistors.

if the relay does not pull in, the problem is likely in the contacts on the mech. Check the contacts on the clamp arm which close when a 45 is clamped.. There are more contacts on the mech which open the circuit to the relay at all times other than when a 45 is clamped.

The plugs on the LPC series were known for faulty connections as well. Since you removed the speed unit to recap it, it is a good idea to check and clean that plug as well.

The LPC was the most complicated machine of its time. If you have never worked on one a service manual w/schematics is essential.

Have the selection receiver and amp been restored?

You are likely to get more help over at these sites:

http://jukeboxaddicts.proboards.com/

https://www.facebook.com/groups/phonoland

https://groups.yahoo.com/neo/groups/...ationclub/info

RobNYC