I have three light sockets not working. They are the number 1, 2 and 5 in the middle of the playfield. I've tried leds and incandescents. Anyway I can test the socket? I have a multimeter but no idea how to use it. Attached is a photo of the socket

20190313_213604 (resized).jpg

20190313_213631 (resized).jpg

I must not be taking the readings from the correct spot. Insert 1 measured 4v, insert 2 measured 7v insert 5 measured 5v. I tried multiple bulbs in insert 2 and still no light.

Diodes tested good

Thanks, it has to be a bad socket. I'm not getting any switch issues.

Here is the schematic, looks like they are all in a line after number 4.

20190315_123459 (resized).jpg

I checked for continuity between the socket and plug along the v/b/b wire and it checked out.

Not sure what L84 is or where it is

Fixed

A drop of solder on the first socket and braid wire connecting to the other 3 sockets. Apparently there wasn't a good connection.

Screenshot_20190318-184224_Gallery (resized).jpg