(Topic ID: 300672)

GI issue is giving me GI issues.

By bigjimm64

2 years ago



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#1 2 years ago

Hey all,
I have no GI lighting on my RBION. I have checked continuity between light sockets and J15 and that is good. I have tested the voltage from the transformer and is is good at 6v. The fuses are good, relay is operating and i have continuity between J14 and J15. By my logic, I should have lighting.
What am I missing here? Should I be getting 6v between pins 1-4 and 6-9 on the J15 socket?

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#2 2 years ago
Quoted from bigjimm64:

The fuses are good, relay is operating and i have continuity between J14 and J15. By my logic, I should have lighting.

Sounds logical to me as long as you are talking about J14 pins 1-3 and J15 pins 1-4 and your connections are solid and able to pass enough current to the circuit for it to operate.

Quoted from bigjimm64:

What am I missing here? Should I be getting 6v between pins 1-4 and 6-9 on the J15 socket?

You should as long as your meter is on AC; have you checked this voltage with the J15 connector removed?

#3 2 years ago
Quoted from Pin_Guy:Sounds logical to me as long as you are talking about J14 pins 1-3 and J15 pins 1-4 and your connections are solid and able to pass enough current to the circuit for it to operate.

You should as long as your meter is on AC; have you checked this voltage with the J15 connector removed?

That's something I did not try.

I am getting 6v Between 1-4 and 6-9 with the connector removed.

.7v between the same when the connector is installed testing the exposed metal with my meter. Can it be the molex connector?

#4 2 years ago

This is what I have tried now. I unplugged the GI J15, attached alligator clips to the board and attached them to the GI string on the playfield panel.
No lights. This bypassed everything in the wiring and still no lights. I am getting 6v on the board connector and 6v at the end of my alligator clips.
Only thing I can think of, the voltage is correct but not enough amperage?

#5 2 years ago

Any chance that all your GI bulbs are burnt out? Or using wrong type bulbs or LEDs?

#6 2 years ago
Quoted from PinballManiac40:Any chance that all your GI bulbs are burnt out? Or using wrong type bulbs or LEDs?

I can take an individual bulb and light it with my alligator clips in my hand. I can then connect the clips to the string on the back panel, nothing. Not even the tested good bulb I lit before.

#7 2 years ago
Quoted from bigjimm64:

.7v between the same when the connector is installed testing the exposed metal with my meter. Can it be the molex connector?

Could be, you can inspect it but unless its corroded or burnt, its probably okay. You may want to pull the board and look for previous work and/or cracked solder joints. Taking resistance measurements of the paths instead of simply checking continuity can also tell you a lot.

#8 2 years ago

My apologies for attempting to be funny based on your thread title. If your GI is giving you GI issues, I recommend not eating the bulbs. Again, I apologize.

#9 2 years ago

And some pictures would help.

#10 2 years ago

Wondering if it could be small data ribbon cable from cpu to driver bd. Not calling for the relay for gi possibly.

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