(Topic ID: 205104)

Strange issue on road kings .?

By Milltown

6 years ago


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#1 6 years ago

I've had this game for years and it's been trouble free. .
Today I fired it up in my shop since there was a credit on it ..
Plays fine except if the power kicker coil light is lit in the left out lane.
Now if I roll over switch 28 the kicker will work fine .. the bitch is if the light is lit and the ball rolls over switch # 21 lane 4 the power kicker coil will also go off. Very odd .. the diodes all seem fine .I also reseated the plug in the backbox. The Only common wire between the switches is white and yellow ? Any thoughts on what to check is very appreciated.

#2 6 years ago

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#5 6 years ago
Quoted from GRUMPY:

Put game in switch test, then remove all the balls. Are any switches showing up? Then push down on switch #21 and hold for a while and note which switches show up on the display, only #21 should come up on the display. Then repeat for switch #28.

Will do.. I have a spare playfeild.. could the snubber board near the power kicker also be at fault.. I hear it clicking on and off when the switches are activated ..

#6 6 years ago

Also if I do get multiple switches what does this mean ?

#7 6 years ago

On switch levels without balls in 31detour enter and 23 r Ramp eos keep going on there own without touching any switches .
If I hold 21 down . 20 31 28 And 23 are coming on in this test no # 21 .
If I hold 28 down 28 23 31 and 20 are coming on in this test .. ???

#8 6 years ago

In switch edge test if I hold down 28 or 21 it only comes up as 28 left outlane? 21 doesn't popp up at all on display..

#9 6 years ago

And if I hold switch 22 right Ramp 1 enter
No 30 drop target popps up on display..

If I hold down switch 20 no 29 right outlane popps up ?

30 does register as drop target ..
31 does not register
28 and 21,both register as 28 ??
This is in switch edge test ?

Wtf?? Haha

#10 6 years ago

Switch 20 and 29 both register as 29..

#12 6 years ago

I belive 31 is the culprit.. 31 does nothing .

#13 6 years ago

On switch levels I got them all to stop...

#14 6 years ago

If I hold 28 both 28 and 20 flash 8n display
..if I hold 32 .32 and 24 flash on display ..now if I hold 31 31 and 23 flash.. ???

#15 6 years ago

Very odd..

#16 6 years ago

Now 31 registers in switch edges. .
Now on switch levels 31 and 23 alternate automatically

#17 6 years ago

And now in switch edge nothing on 31

#20 6 years ago

Ok I out another switch in no 31 ..no different.. I switch levels 31 and 23 flash..
On switch edge 31 does not register ?

#21 6 years ago

Ok checking

#22 6 years ago

Ok how do I try this jump test ?

#23 6 years ago

When I switch the ramp up switch 31 works ?

#24 6 years ago

And the switch levels stop flashing switches.....very strange haha ..
Getting somewere at least ..

#25 6 years ago

And in gameplay all switches,seem to function ? Ecept when you hit switch 21it fires the power kicker when lit .. but 28 will also fire it when hit...

#26 6 years ago

31only registers in game play when Ramp no 23 is up ?

#27 6 years ago

And just tried switch levels again.. if Ramp is down r Ramp eos no 23 and detour 31 flash..
Maunaly I put the ramp up and it clears ..

#28 6 years ago
Quoted from GRUMPY:

You can remove j-8 and j-10 from the cpu board and put game in switch test and use a jumper to test switch #28, #31 and #32. It this works correctly then its a p/f problem if not then its a cpu problem.

From green and yellow to same on the switches ? To test ?

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