hey all.. I have been chasing this issue since I have had the machine and had a couple of posts in this forum about it, but i have been troubleshooting this a bit and decided to start a new topic with a few videos so maybe someone can pinpoint me in the right direction..
Since I got the machine the hundreds unit never worked correctly. It always skipped and chattered a lot whenever scoring multiple 100 points aka 500 points or more.. like sometimes it would score 200 or 300 or just 100 .. you can see the unit struggling to keep up.. on the flip side when scoring 50 points on the Tens unit or 5000 on the Thousands unit, the points scored solid and never jumped or chattered and chimes were strong and precise for each point scored.. not so on the Hundreds unit. it would chatter like crazy and was always erratic..
So looking at this unit more closely this is what is happening..
whenever I close a 100 point relay ( rollover or pop bumper the unit locks on 90% of the time.. In the video I am just hitting the 100 point rollover but it happens with all the 100 point switches.. as you can see here...
As you can see the coil locks on almost every time the switch closes.. But what is interesting to me is that when i just close the M relay in the backbox to actuate the hundreds unit it never ever locks on.. as you can see here..
Given all this information I am thinking that there must be a switch on the playfield that is closed somewhere or a short in a wire maybe.. ? well I checked all the switches and nothing is closed that shouldent be as far as I can see, but here is the really interesting part, ( at least to my newbish self) when I actuate the rollover to cause the coil to lock on ( as see in video #1) I can then reach down and open the M relay to stop the hundreds unit coil from locking on.. as seen here..
so I am thinking that if it was a short or a closed switch somewhere I wouldn't be able to reset the M relay.. could I be right in my thinking about this? So if anyone could help me that would be great because I am really out of ideas on where to look.. I would just like to get the Hundreds unit scoring the way it should..
Oh and PS.. when I purchased the machine I noticed that someone stuck a shorter spring on the M relay than any of the others.,. I am guessing that this issue has been going on with the previous owner as well and they put a tighter spring on the M relay to try and help it close....
Thanks guys for any and all help... .