Firepower
Williams, 1980You're currently viewing posts by Pinsider pinball-dood.
Click here to go back to viewing the entire thread.
Replacing LEDS on Firepower and got two big 89 flashers under the 'Fire' and 'power' on the play field. They don't seem to work. The old bulbs I replaced were old and burned out so I've never seen the 89's flash. What should I do? I posted two photos below, it's the 89 in the middle of each.
Quoted from kuelman:There is a small board between the two flasher bulbs with a large resistor on it. You need to cut the large resistor off the board. Then your led flashers should work.
I will try this, thank you!
Quoted from dzorbas:Go here and have a look.
https://pinside.com/pinball/forum/topic/firepower-tech-repair-and-restore#post-2276297
There is another thread that I found similar information about the warming resistor but I can't locate it at the moment. My LED flashers worked once I cut out the warming resistor. Just make sure you clip the correct one...
Thanks a bunch, man. I'll check that out.
Quoted from dzorbas:Go here and have a look.
https://pinside.com/pinball/forum/topic/firepower-tech-repair-and-restore#post-2276297
There is another thread that I found similar information about the warming resistor but I can't locate it at the moment. My LED flashers worked once I cut out the warming resistor. Just make sure you clip the correct one...
Hey, I found the burned out warming resistor. How would you recommend I remove it? Just want to make sure. Thanks.
Quoted from erak:Cut the ground wire off.
Gotcha. Thanks a lot man. So the little metal piece to the right of the resistor? What should I cut it with?
Quoted from erak:Check what I circled in green.
And cut one of the red marks I put on the pic. It doesn't matter which one you cut.
The small resistor circled in green has to be good or your lights will never work.
Thanks, man. I'll keep you posted.
Went to cut the resistor but it was so disintegrated that it just broke in half. The flashers still don't work so it may be a problem elsewhere. 
Quoted from erak:Check the small resistor circled in green with a Multimeter. If it's no good, your lights will NEVER work. More than likely the heat from the big resistor going bad fried the small one. Replace them, $ 0.50 cents each or less.
Then if that doesn't work you need to do some troubleshooting.
Awesome. Thanks so much. They probably haven't worked in 20 years so it's gonna be awesome seeing them work. Thanks everyone 
Quoted from erak:Check the small resistor circled in green with a Multimeter. If it's no good, your lights will NEVER work. More than likely the heat from the big resistor going bad fried the small one. Replace them, $ 0.50 cents each or less.
Then if that doesn't work you need to do some troubleshooting.
Hey this may be a silly question but I'm kinda new to pinball repair but do you just solder in the new small resistor?
Quoted from dzorbas:Heat up the leads on the old one, remove it, replace it with the new one. Just solder it in there. If I recall correctly, it doesn't matter which way you put it in as they don't have a polarity. If you want to be sure, match up the direction of the bands when you put the new one in.
Thanks a ton, man. I actually think the small resistor is still alive! The red started blinking but then stopped. What do you think is happening? Thanks.
Update: So I multimetered the small resistor and it is still alive. The #89 lights are still not lighting and I have removed the warming 300 ohm resistor. When I push on the socket of the blue Power light, the Red 89 will come on. Any idea of what I should look at? Thanks!
Gotcha! Yes, when I push the blue bulb, the red bulb comes on. When I push the red bulb, nothing happens Could the blue socket be bad? How can I check?
The bulbs do not flash during attract mode... I'm with you, it's probably a Loose wire or bad socket
I will try this, thanks a ton. The red LED lights up and stays lit during attract mode when I push on the blue bulb. It doesn't flash with the 44's next to it though it's just a solid light.
Quoted from dzorbas:Okay, that's not normal behaviour in attract mode. The 44s will flash and then the 89s will flash. The 89s never stay on. Watch the beginning of this video - » YouTube video.
If the 89s are staying lit that means there's current flowing to them. Are you sure that resistor isn't toast? Take a picture of the board and post it. When you start a game, if you push on the blue 89 will the red 89 come on as it does in attract mode?
Will do!
UPDATE! This wire was really loose and just popped off! Is this the problem?? Should I strip wire and solder back on?
Gotcha! I'm about to solder it back on. I stripped the wire that fell off to expose the copper. Just checked and the wire between the 89's is good!
Quoted from dzorbas:You might as well just snip off the half of that resistor that's still on the board. It won't make a difference but it looks horrible sitting there like that. Check the path of all the wires between the two 89s and the board. Check all the other wires soldered to the board. Make sure everything is solidly connected. If a wire came loose or popped off, solder it back on and make sure it stays.
Just soldered the wire back on and tested all connections, everything's all good! I even desoldered that warming resistor part. Still nothing 
Quoted from dzorbas:The other thing you might want to do is swap the bulbs to make sure that they both work. Do the same thing you did before to get the red one to light up. I know this sounds stupid and the bulbs are probably brand new but you want to make sure that something really obvious isn't causing more problems.
I'll try that! I multimetered the ears of the 89's and they were good though
Ok, so I soldered in new sockets and still nothing... any ideas? Continuity checks out on wires and small resistor has continuity
You're currently viewing posts by Pinsider pinball-dood.
Click here to go back to viewing the entire thread.
Wanna join the discussion? Please sign in to reply to this topic.
Great to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!
This page was printed from https://pinside.com/pinball/forum/topic/firepower-help-2?tu=pinball-dood and we tried optimising it for printing. Some page elements may have been deliberately hidden.
Scan the QR code on the left to jump to the URL this document was printed from.
Louisville, KY