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I would do this to troubleshoot this case: - carefully look at the MPU's J2 and J3 connectors - make sure none of the pins are broken or corroded inside the housings; - go into switch test and check switches individually - make sure each properly report for itself only; if not, check if issue is...

Thanks Menace. The issue can also be a missing, incorrect or overly stretched return spring on those relays. Or the relay armatures no longer in their proper pivot spots...

Are the 10 and 100 pts relay contact stacks nice and tight ? Are their contacts properly gapped ?

This sounds like one 10 pts and perhaps a 100 pts playfield switch(es) might be gapped too close and vibrations or mechanical movement cause this ? Check the sling switches, spinner and roll-overs switches for proper gapping (e.g. all 10 and 100 pts switches on the playfield). Good luck ! -...

Unfortunately, a defective drive transistor usually cannot be identified by a visual inspection only. They need to be tested with a Digital multimeter - there are tons of info on how to do this on the web. If you are lucky, the bad transistor will be warm or hot before the fuse blows (if it...

As indicated earlier, the issue appears to be a bad transistor on the Rottendog driver board or a bad MPU-Driver Harness/pin. Or miswiring - something that was replaced incorrectly earlier. At this stage, I can no longer help remotely, sorry. Good luck! - Sylvain.

Oh, sorry. then, the info should be in THEIR manual. From their web site: http://www.ni-wumpf.com/System80CPU.html this is the explanation - no more dip switches on this particular brand replacement MPU board: 'Full text based diagnostics menu system that allow operator option settings...

You need to look at the MPU located at the top right in the head. The manual has the explanation on p.1 II.B Lightbox Adjustments, similar to this pic below. Basically, there are 4 banks of 8 switches, with switch 1 on the left of the 1st left bank of switches, and switch 32 at the right of the...

I would start with checking the connectors and pins on the Lamp driver board (bot left board in the head). And also J1 on the Solenoid Driver (it has the lamp address and data drives going to the Lamp Driver boad). Make sure the machine is powered-off before removing and reconnecting any plugs...

Solution for the switches was provided on MAACA earlier today: http://www.maaca.org/viewtopic.php?f=22&t=18898&sid=9b68f8832f363fa12719e41b08c8aaa7 Cheers, - Sylvain.

I owned a Bally Bon Voyage a few years ago, fixed it, enjoyed it for a few weeks then sold it. While this machine model has nice artwork, I found the game play to be somewhat boring, not much to do on that playfield. A step down from your F14 in my opinion... But if you like EMs, it might be...

I would still check the MPU to Driver boards Harness pins, along with the associated drive transistor on the Driver board (even if it is a Rottendog). That coil may also need to be changed as well if partly burned or partly shorted, been left on for too long. Make sure that these coils have a...

Hmmm, I guess these coils appear to lock for some reason now and then, blowing the fuse(s). Unless the problem is mechanical with the ball unable to eject and the MPU/driver attempting to kick the ball out at a high repetitive rate (any such noise before the game blows fuses?) According to the...

This is what I would do to troubleshoot this: - Are all the balls present in the through (2) ? - get the manual if you do not already have it; - identify if the issue is with the switches/matrix, or solenoids/drive; - then, pinpoint and fix the issue. Some guidance below. Using the self-test...

Here are the related switches for this. Try it and let us know. Switch 20 - Novelty Mode ON: Playfield Special and Extra Ball features award 50,000 points and 5 knocks. High score, high game to date, and match features disabled. OFF: Normal game mode. Note :Switch 20 overrides switch 21...

I have an original Counterforce manual. Post your question on the forum here (until you purchase a copy from Steve Young or from an eBay seller) - I will try to answer it as soon as I get a chance. - Sylvain.

Good advice from Menace above. Basically, troubleshooting will need to pinpoint where the issue actually is. Freeze spray can help locate the bad component or solder joint. Most probably a bad chip or socket/solder joint temperature-sensitive on one of: - MPU Solenoid Drive circuits (some are...

For me it is in-line drop targets. Risky (SDTM) but rewarding. In games such as Fathom, Flash Gordon, Paragon, Eight Ball Deluxe, etc. Cheers, - Sylvain.

According to the manual, F14 Tomcat requires 4 balls - there should be a sticker to that effect under the lockdown bar. If the proper number of balls are present (check if one is stuck under a plastic, etc. if not all down in the through), go in diagnostic switch test and confirm all switches...

Chance is that the End of Stroke switch is misadjusted on this flipper pawl, e.g. switch does not open when the flipper is activated, so the strong coil stays activated when the flipper button is kept on, causing the coil to overheat rapidly. Or, perhaps the wiring to the new flipper coil needs...