Quoted from borna:Hi all,
Working on the 1975 Bally Wizard and some of the lights on the back box not working. For example all the lights you see with the arrows are the the blinking lights and none of them are working. Lights are in good shape. Can someone point me where they are on the schematic link below:
https://www.ipdb.org/files/2803/Bally_1975_Wizard_Schematic.png
Thanks[quoted image]
That should be the circuit line that connects to General Illumination (Insert) at position A3. The Bally schematics use that one circle to indicate all lamps in the backbox (or insert), which are all connected together in parallel by a yellow wire on one side and a brown wire on the other side. So, if all the other backbox GI lights are working and you are sure the bulbs are good, you can't tell any more information from the schematic. That area of the schematic is basically working because the other lamps light up, but something is wrong with that specific string. You will have to get back there and check that wiring to find out what is broken or disconnected.