Fish Tales GI TECH (f115 - q14 triac)

[tomdotcom]

The GI lights for my pop bumpers and the back of the playfield GI is
out. I just replaced j115/j120/j121 header pins and the 3 female
connectors as well. I buzzed the header pins and have proper
continuity from the front of the board to the back of the board.

I am running through the pinrepair guides and may have found the issue
but I'm not sure EXACTLY how to fix it.

I ran all the continuity tests and this is the only one that doesn't
have continuity.

J115 pin 11 to Q14 top leg (triac upper mid)

How can I fix this? Do I need to run a jumper wire or something? Would
this most likely be the cause of the GI lights not working?

Tom

[tomdotcom]

I forgot to check continuity between the component and solder sides of
the driver board when I installed the male header pins. Could that
also be my issue? Everything looked fine when I installed them, the
holes were not damaged or anything like that...

Another possibility is that one or more of the wires do not have the
pins crimped on quite right so the female connector to j120 j121 or
j115 is not making proper contact with the header pin. Can I test this
somehow.

Probably dumb questions as usual, but I'm learning as I go.

Still gotta get that damn BSD f115 fuse error figured out to
arghh...damn pinballs give me so much grief haha

[Lloyd Olson]

You have to check continuity from each pin, to a point further away on the
board. Very easy to lose through board continuity. LTG :)

"tomdotcom" <tomdo...@gmail.com> wrote in message
news:8afdd441-e790-48c6...@a16g2000prg.googlegroups.com...

[tomdotcom]

This is the test I ran, everything passed except for this one: J115
pin 11 to Q14 top leg (triac upper mid).

J115 pin 1 to ground. Note if this connection is broken, wacky GI
dimming can occur.
J115 pin 2 to fuse F106 (lower left) to J120/J121 pin 11, to J119 pin
1.
J115 pin 3 to fuse F110 (lower right) to J120/J121 pin 7.
J115 pin 4 to fuse F109 (upper right) to J120/J121 pin 8.
J115 pin 5 to fuse F107 (middle left) to J120/J121 pin 10.
J115 pin 6 to fuse F108 (upper left) to J120/J121 pin 9.

J115 pin 7 to Q10 top leg (triac lower rt). Q10 middle leg to J120/
J121 pin2.
J115 pin 8 to Q18 bottom leg (triac upper rt). Q18 middle leg to J120/
J121 pin1.
J115 pin 9 - key
J115 pin 10 to Q16 top leg (triac lower mid). Q16 middle leg to J120/
J121 pin5.
J115 pin 11 to Q14 top leg (triac upper mid). Q14 middle leg to J120/
J121 pin3.
J115 pin 12 to Q12 top leg (triac left). Q12 middle leg to J120/J121
pin6, to J119 pin3.

[Craig]

Pin 3 of 121 is what would be providing the power to the GI that you
say is out. So if you are missing continuity from 115 pin 11 to the
triac, you could try a jumper wire. How is your plug that feeds 115
at the transformer? These can burn too and need to be checked/
replaced!

Do you have power at J115 pin 10 and 11?

You'll get there, I think you're close now if your crimps are good...

[tomdotcom]

I downloaded the WPC schematic and I see that j115-11 goes to q14
triac and then it goes to j120-3 & j121-3.

I'm not getting continuity between j115-11 and the q14 triac for some
reason.

1. bad through hole on the pcb
2. bad trace on the board

So can I just jumper a wire from j115-11 to the top leg of the q14
triac and call it a day?

[tomdotcom]

On a side note, how can I tell which pins on the j120/j121 connectors
control which areas of the playfield GI??

[Mike]

On May 20, 1:14 am, tomdotcom <tomdotco...@gmail.com> wrote:
> On a side note, how can I tell which pins on the j120/j121 connectors
> control which areas of the playfield GI??

There's nothing wrong with throwing a jumper wire on the back of the
board if needed. It may be necessary to do so.

-mike

[tomdotcom]

Fixed it, the trace from f115-11 to q14 was bad, installed a jumper
wire and all is well! Thanks so much everyone!