(Topic ID: 255765)

Lights not operating on my T2

By nzman

4 years ago



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5 Target Circuit Board A14517 (resized).jpg

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#2 4 years ago
Quoted from nzman:

Hi all...
I'm having a weird problem.
Some of the lights won't light up on my Terminator 2 Pin.
It's quite a few lamps.
When I did some investigating, I realized that the lamps were all from 2 different cross sections of the lamp matrix.
Row 3 / Col 3
Row 8 / Col 8
Row 3/ Col 3 lands on the (leftside) target 3. I replaced the resistor on that lamp, which makes me think I have the incorrect resistor in there. Anyone know the correct resistor for this circuit board ? (board A-14517 5768-12790-00 see attached) The best I can see on the other resistors is that they say "N1" on them.
Row 8/ Col 8 lands on Top Lane Right light. I haven't touched that lamp. (besides replacing all bulbs with LED lights)
Any ideas on fixing these issues ?
thanks in advance[quoted image]

Those are blocking diodes. Usually 1N4004

#4 4 years ago
Quoted from ChrisHibler:

The typical cause of lamps in PCB carriers not working are...
1. fractured header solder joints. Reflow them.
2. "divots" in the PCB solder pool where the twist-in socket settles. Reflow that solder, adding a bit more.
3. Fatigued twist in socket. Swap it with another socket.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

Great answer Chris! Now get my boards fixed, LOL just kidding. When they are ready, they are ready.

Ken

#6 4 years ago
Quoted from ChrisHibler:

Hey...a guy needs some recreational time off...that's what PinSide is for me.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

Lol you are so right Chris!

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