Knockout
Bally, 1975Yet another new issue with this game. I had it working last week except for some problems with the rollover targets sticking. I took the playfield off to make adjustments to them, put the playfield back and connected everything. Now when I hit the start button or try to get the game to start through the switches nothing happens. I’m stumped and so is my tech buddy.
Only simple thing I can think of is the Hold relay.
Have had games that won't start and I just manually flicked the hold relay to open.
Quoted from Sennap1:Knockout won’t start.
It just seems somehow appropriate to me...that Knockout has been knocked out.
Everything worked before I checked all the fuses and replaced them. Tried releasing the hold relay manually still nothing. After having it on for awhile I checked the temperature of the solenoids and 4 of them we’re getting very hot, so I shut the game off and called it a day.
Quoted from Sennap1:Everything worked before I checked all the fuses and replaced them.
Bally fuse holders are notoriously crappy. Check that closely.
Do you have lights? IF yes
Check to see if you are in tilt mode.
If no, confirm you are getting power.
If you have the schematic, can you take a post a snap shot of the start up (the motor and coin mech) and power circuits (around the transformer and fuses).
No news on this issue from my end. Checked everything that i got advice on to no avail. Cleaned and reinserted jones plugs checked all relays and fuses nothing gets the game to start. I have power to playfield lights and switches. There doesn’t appear to be anyway to get the game to reset and start. Could it be a bad coil?
Hi Sennap1
do You want "troubleshoot from the very beginning" ?
I found a (hard to read) part of the schematics here: https://pinside.com/pinball/forum/topic/bally-knockout-will-not-start#post-4218165 --- see my JPGs - I have taken from there - we may later discuss the JPGs.
From the very beginning - see here http://www.backglass.org/williams/kordek_archives/introduction_to_bally_flipper_games_blue_cover_100.pdf on page-24 (ori-20) the drawing of the Game-Over-Relay, Interlock-Relay. TWO armatures are mounted - we can actuate "back" - and we can actuate "forth". Toggle off Your Knockout pin, unplug the main power cord (Safety Reasons). Try manually on the Game-Over-Relay this actuate "back", actuate "forth" --- see both states are stable (?) See on page-24 (ori-20) the "Latch-Armature" is hooked-in into an Nylon-Ladder (and switchblades are also hooked-in into the Nylon-Ladder) - the "Trip-Armature" IS NOT HOOKED-IN INTO an Nylon-Ladder.
When You press on the "Latch-Armature" You do "Latch the Game-Over-Relay" --- when You press the "Trip-Armature" You do "Trip the Game-Over-Relay". Do this latching and tripping several times. End with pressing the "Latch-Armature" (latching the relay).
Plug-in the main power cord - WATCH the Game-Over-Relay as You toggle-on the main power switch --- as You toggle-on the main power switch the Relay MUST actuate - it MUST TRIP - does it in Your pin ? Greetings Rolf
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