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(Topic ID: 151204)

TZ question

By jbp8653

8 years ago



Topic Stats

  • 6 posts
  • 5 Pinsiders participating
  • Latest reply 8 years ago by Coyote
  • No one calls this topic a favorite

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#1 8 years ago
OP
 
JBP

jbp8653

Pinside member

US Gibsonton, FL

11y 48,400 266 7 11

Hello all! The extra ball button by plunger has a light in it that flashes when its time to push it. The red wire that powers it has a diode on it. I think it is 1n4004????It has broken off at the base so there is no wire left to solder back on terminal. The light lights just fine in test mode without diode. Is the diode really needed here? I am thinking thats a dumb question as it wouldnt be there otherwise. They have them at Pinball Life for .07 each. Thanks in advance for your replies.

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#2 8 years ago
 
ZAZ

fitzpatricksrus

Pinside+ Frequent

10y 41,400 87

Looks like it's #87 on the lamp matrix, so yes. It needs a diode.

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#3 8 years ago
 
BTF

PinballManiac40

Pinside+ Frequent

14y 234K 17,620 104

OP
Quoted from jbp8653:

1n4004????

yes

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#4 8 years ago
 
F X

Coyote

Pinside member

9y 107K 8,986

No. The diode should be on the coin door interface board.

Some switch assys came with a diode on the button as well (compatibility with earlier games) but it never hurt having two on the circuit. Note that you lost one, you still have one on the matrix - on the interface board, so you should be fine. (*Should* be, because who knows what has been fine to your game at some point..!)

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#5 8 years ago
 
ZAZ

zaza

Pinside+ Frequent

10y 92,650 3,268

I think TwilightZone uses the (older) A-14689 Coindoor-Interface-Board and has only 1 lamp ROW connection with diode (RED-GRY).
So for the buy-in button lamp, it needs a 2nd (RED-VIO) line with extra diode. Both are connected to Yel-Gry.

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#6 8 years ago
 
F X

Coyote

Pinside member

9y 107K 8,986

Quoted from zaza:

I think TwilightZone uses the (older) A-14689 Coindoor-Interface-Board and has only 1 lamp ROW connection with diode (RED-GRY).
So for the buy-in button lamp, it needs a 2nd (RED-VIO) line with extra diode. Both are connected to Yel-Gry.

Aaah, you may be right. I may be thinking of the later -S boards that had the extra diodes in it.

Okay, ignore what I said then.

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