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(Topic ID: 27101)

Twilight Zone tilt issue

By MiSC90

11 years ago



Topic Stats

  • 6 posts
  • 3 Pinsiders participating
  • Latest reply 11 years ago by MiSC90
  • No one calls this topic a favorite

You

Linked Games

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#1 11 years ago
OP
 
IVY

MiSC90

Pinside member

12y 50,800 177 19

I have narrowed down one of the issues with my TZ. It shows the plumb bob tilt when the out lane (by the plunger) and the center trough (SDTM) are activated. I looked for loose wires and shorts...nothing. i then changed the diodes on these switches with no luck. Any suggestions?

TIA

Scott

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#2 11 years ago
 
GCB

Pinwiz1985

Pinside member

US Watertown, CT

11y 41,900 376 2 6

Reversed diode, PIA at U10/U11 are faulty. Caps/Diodes on the MPU are beginning to leak/fail, bad connectors on J2, power supply issues, Vcc ground bounce, could be any number of things. I just wnet through it all with my Embryon and its -35 MPU, could be any of the above.

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#3 11 years ago
OP
 
IVY

MiSC90

Pinside member

12y 50,800 177 19

Thank you for the help....i will check things tonight and update on my findings

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#4 11 years ago
OP
 
IVY

MiSC90

Pinside member

12y 50,800 177 19

I used the mpu (big board) in a well working TZ. It all worked fine. Time to hunt for the bug.

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#5 11 years ago
 
LTG

LTG

Pinside member

US Hopkins, MN

12y 191K 56,905 24 7

Don't forget basic switch matrix issues. Diode on backwards, switch wired worng, a short to switch wiring.

Go over all your switches.

LTG

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#6 11 years ago
OP
 
IVY

MiSC90

Pinside member

12y 50,800 177 19

After looking over and over I found that the shooter lane switch was wired wrong. After fixing that I found that the outhole and center trough switches were crossed.

All works well. Thank you for the advise

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