The only special issue with putting LEDs in Gorgar is with the flashers for the magnet lamps. If you put 89 LEDs in there you have to remove the 330 ohm 2w resistor on the flasher board otherwise the LEDs will stay on all the time.
viperrwk
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The only special issue with putting LEDs in Gorgar is with the flashers for the magnet lamps. If you put 89 LEDs in there you have to remove the 330 ohm 2w resistor on the flasher board otherwise the LEDs will stay on all the time.
viperrwk
Quoted from agodfrey:SO I cut the 330 ohm off. So I need to jump that or just leave it?
Leave it off.
Quoted from agodfrey:I am having trouble with some single LEDS under the back glass. What rate resistor do I need put on the LED to make it work? I have read 470ohm 1/4 watt but not sure.
Not sure what you are talking about - if you have an LED lamp that plugs into either the controlled lamps (game over, player #, etc) or the GI, it should just work, assuming you bought the correct LED in the first place.
viperrwk
You could have bad sockets - inside LED lamps there's usually one or more resistors which are necessary for the LED to operate properly. Sometimes, if there's only one resistor, the LED will not work correctly installed in one direction but will work if you install it in the other direction. If the socket is bad (sometimes an issue with 555 style LEDs) it won't work with the LED but will work with an incandescent.
You should not need to add a resistor to get LED lighting to work correctly. (Unless you're doing something out of the ordinary.)
viperrwk
Early Bally and Williams machines differ in how they handle the controlled lamps and this may be causing you confusion.
In Bally machines, the lamps are each individually controlled by a transistor. LEDs do not draw enough current to light correctly on these machines and therefore need a resistor. The most elegant solution was developed by Hans Haase of Siegecraft:
http://www.siegecraft.us/presta/index.php?id_product=44&controller=product&id_lang=1
In Williams machines, the lamps are controlled in a 8x8 matrix where the intersection of two transistors turning on lights a particular lamp. A standard LED lamp with a resistor inside is usually enough to work without any other modifications. If a lamp is not working in a particular socket, it is usually either a bad lamp, bad socket, bad wiring or some combination of the above, assuming all the electronics are good.
viperrwk
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