OP

Quoted from mickja1:

Hello!
I have a T2 with a Rottendog power supply, upgraded to PinSound. Recently it has been causing me problems:
1. First, it burned out the drop target actuator coil. I replaced the coil, but it was still humming, so I cut the wire. No big deal. Can play nearly normally.
(P.S. Also tried bypassing the wire from the driver board--it showed short, no joy.) All the rectifier diodes on the Rottendog driver board were checked--all okay.
2. Occasional random firing of the ball launcher solenoids during game play.
3. Occasionally triggers slam tilt, especially when having a good game (but nothing more than nudges on the cabinet--nowhere near what it would take to trigger slam tilt). Usually the slam tilt occurs when I haven't even nudged the game at all.
4. Occasional sound triggers are incorrect (this is the latest problem).
I was wondering if the MPU board should be replaced? Or the ROMs re-programmed? Any ideas? I have limited technical knowledge, but would love a few ideas to consider.
Thanks!
Jerry

OP

Quoted from mickja1:

In reply to Manny65:
1. I tried jostling the machine in switch mode--only the tilt plumb bob fired.
2. All switches (except ticket dispenser) tested repeatedly. All work, none fire two switches.
In reply to eyeamred2u:
No visible battery damage. Batteries are <1 year old.
I'm going to try replacing the ribbon cables next. I have a set on the way. My tech told me that those ribbon cables are prone to failure. The description on Marco's website says the following:
"Aging, failing ribbon cables and connectors can be an intermittent source of garbled displays, locked-on or dead solenoid coils/lamps/switches, sound problems, system resets, boot up failure, etc. Installing new ribbon cables provide reliable mechanical and electrical connections for board signals. Many cables are up over 30 years old and have been removed and re-inserted many cycles beyond their insertion design."
If that doesn't work I may replace the MPU/CPU? Any other ideas? Thanks for all the advice!