Hi Pinside. First time posting!
In need of some help. I picked up my first ever table yesterday, a project Brunswick Aspens for $50.
The table has a weird fault: Some specific score switches (a slingshot, a couple standing target etc) when hit register as a tilt.
These switches all appear (I'm not 100%) to be on one column of the switch matrix, so I think the most obvious cause is a short somewhere, but I can't see one.
There's a second problem (or possible the same one): When I picked it up the guy handed me a desoldered transistor and said to replace it. It had actually burnt out, but looking at the board there was another one missing nearby (no scorch however).
When I took the chime box out, two of the coils had burnt out! So I'm assuming this is what caused the transistor burn out (or vice versa). My understanding (and as I say I'm a pinball noob) is that coils mostly burn out when left on some how.
Could this chime failure have also damaged some logic chips, creating the tilt problem? Could something else be causing the incorrect tilt trigger? Any way I could diagnose this better?
Also I have switch and lighting diagram from the scanned manual, but it doesn't cover the logic board.