Having issues with some switches on my Lost World, and wanted to make a new thread about it separate from my others. When I push the start button it causes other switches to go off. The behavior is as follows:
Pressing the start button with no credits manually advances the bonus score.
Pressing the start button with credits starts the game properly, scores 1800, advances bonus once and lights E and F.
Pressing the start button in a started game with no other credits scores 1800 and advances the bonus once.
In the previous thread, Quench told me it's a short in the matrix. How can I effectively test for this? I've replaced the diodes and caps on E, F, and the diode on the start button. I also do notice that sometimes the bottom bumper goes off when it's not supposed to. I replaced the diode on the bottom bumper switch.
My game also stopped taking credits. I had a button lazily soldered in to give credits, fed through the coin door that quit on me. Connecting the credit switch to another switch increases the credits.