Hi Jimma...

Do you have the manual to your game ? Check the switch matrix for commonality with the switches, it could be a row or column of switches. If it is - then check the connectors at the CPU board. Follow the wires under the playfield and see if one has come loose, or a diode. Look for any shorts of the light sockets to any other part of the playfield..

I think your game has a test for switch matrix ?