(Topic ID: 148371)

How to Add LED Flashers to System 11 Games

By mrgregb123

8 years ago


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#91 4 years ago
Quoted from kbliznick:

4. On games with 24 Volt #1251 flashlamps (Pinbot, Cyclone...) These are usually wired 3 sockets parallel to each other. Change the sockets so that the bulbs are wired in series instead (daisy chain them) Technically they will be just at 8-12V each on the flashers but they are still very bright, Then you can use three 12V flashers. Note that when doing this make sure that the 24V enters the first socket at the nipple and exits though the body and then enters the next socket through the nipple and exits the body and same for the third. This is important in case the LED's you are using are polarized as polarized lamps won't light when powered backwards (incandescents don't care which way the current flows) . Note that with the series connection one bulb out of the circuit or broken will cause the other 2 bulbs not to light. I don't think this method will switch back to 12V incandescent very well as the voltage per bulb might be too low, but I haven't tried.

Thanks for the details on the 24v flahsers.
How does this work with SoF? It seems to only have one #1251 flash lamp?

#94 4 years ago
Quoted from Gornkleschnitzer:

WOW... so, in one sentence, you just solved the mystery as to why my mini-playfield flasher keeps burning out.

Ha! Mystery solved -- If you plan to convert it to a standard 89 let me know. I'm still scratching my head over where this resistor is kbliznick is talking about in the schematic.. I'm ordering parts from PL then i'll dig into it next week...

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