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(Topic ID: 308547)

Sinbad outhole

By dsquared_314

2 years ago



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#1 2 years ago
OP
 
D^2

dsquared_314

Pinside+ Frequent

2y 45,550 266 7

Coil is okay
Diode is okay
Diode cluster is okay
Driver transistor is okay
Switch matrix to see path on cpu is okay
Switch is okay
Repined all edge connectors

Outhole only fires if I ground and touch transistor ( no don’t say transistor is bad, new board, transistor passes when I test it)
Coil does not fire when I do all coil test.
Everything else on the game works fine.
End of ball bonus is scored so the leaf switch is fine.

What else is there to test or should I just buy the all in one board from France

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#2 2 years ago
 
237

slochar

Pinside member

7y 86,550 6,913

Use a logic probe and trace along the path to make sure you're getting the pulses.

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#3 2 years ago
 
CHD

Cheddar

GoldenStatePin

US Lodi, CA

11y 117K 5,181 17 10

I'm not sure which IC is the SN741N controlled by U4 on the MPU but it can be tested.

There are IC testing instructions on the pinwiki general page. This test is great for finding shorted or open ics.

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#4 2 years ago
 
KMA

Mach1

Inactive member

SE Robertsfors

3y 51,550 110 4

My guess is that the IC SN7417N is chip number 6. Don’t know how they are labeled on the board but probably Z6.

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#5 2 years ago
OP
 
D^2

dsquared_314

Pinside+ Frequent

2y 45,550 266 7

Thanks everyone. I have in and bought the 4in1 board from france

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