Judge dredd - drop targets not recognising hit

GezTheHealer

Registered
Apr 20, 2018
176
292
63
Trowbridge
Alias
Luke G
hello, I have an issue with JD where the drops aren’t being registered. I’ve checked connections under the table - they’re connected. See video. Any help much appreciated on where to start. Video shows me testing it. The drops only pop back up when judge is spelt out triggered by the subways, and only the edge 4 pop up - not the centre. See attached video
 

Attachments

  • IMG_3687.MOV
    38 MB · Views: 3

lozpeters

Site Supporter
Jan 3, 2013
131
35
28
Bristol
Have you checked the switch edge test to see if the optos are working and registering the targets? I have just rebuilt this assembly on my JD , looks like the centre target is not connected to the reset arm so isn't being pulled up during the reset
 
  • Like
Reactions: GezTheHealer

pinballmania

Site Supporter
Jul 21, 2011
2,149
1,492
113
Check the other three switches in the column of connected switches. This will tell you if the cpu is seeing any switches on this column. Two of them are slingshots so easy to test. Next stage will depend on results.
 
  • Like
Reactions: GezTheHealer

pinballmania

Site Supporter
Jul 21, 2011
2,149
1,492
113
4a421ef26f528f655297c5281ad1668e.jpg
 
  • Like
Reactions: GezTheHealer