Spy Hunter - Weapon lights not working

I'm sure that @cdjump does.

Is there anyone in your area that owns a Spy Hunter where you could swap a board and find out? You can quickly isolate the problem that way.
 
I'm running with an LED modification and I'm not 100% sure you'll get the same results as me, or I'd offer to take measurements for you to go by.

Or are you just done with trying to repair it yourself?

It may be the path of least resistance to simply send it to cdjump. you'll have it back in a week, fixed.
 
First I checked voltages at the bulbs and not getting anything there. So my guess is it could be the lamp driver

12v is supplied to the lamps themselves through the 2.2 ohm resistor on the lamp board. You should see 12v at pins 5 and 6 (that goes straight to the bulbs), then the grounds are controlled through the uln2068s. That resistor (R19) is famous for opening up, and if there's no current through it (ie, the cpu isn't calling for lights), unless its completely opened, you will see 12v there, but, when the uln2068 completes the circuit, there's so much resistance that the bulb doesn't illuminate.
Long story short, i replace that resistor (R19 2.2ohm, 1watt) with a 2.2ohm 3w resistor on every lamp driver i work on. Its overkill, but its one less problem it'll ever have again. You can bypass the resistor temporarily by putting a jumper wire across it. Don't leave it that way, as that resistor is there to dim the bulbs a bit to keep the heat down and the bezel from flaking. If you bypass R19, and the lights work. Its R19.
 
Should add this to the MCR sticky. :)
12v is supplied to the lamps themselves through the 2.2 ohm resistor on the lamp board. You should see 12v at pins 5 and 6 (that goes straight to the bulbs), then the grounds are controlled through the uln2068s. That resistor (R19) is famous for opening up, and if there's no current through it (ie, the cpu isn't calling for lights), unless its completely opened, you will see 12v there, but, when the uln2068 completes the circuit, there's so much resistance that the bulb doesn't illuminate.
Long story short, i replace that resistor (R19 2.2ohm, 1watt) with a 2.2ohm 3w resistor on every lamp driver i work on. Its overkill, but its one less problem it'll ever have again. You can bypass the resistor temporarily by putting a jumper wire across it. Don't leave it that way, as that resistor is there to dim the bulbs a bit to keep the heat down and the bezel from flaking. If you bypass R19, and the lights work. Its R19.
 
Just wanted to thank everyone for their help. Fingers crossed but I believe I have my weapon lights fixed. It turned out to be a bad connector on J5 of the SSIO board. Huge thanks to @cdjump for walking me through testing my connections and @Cmndr Brain was a big help with the voltages on the lamp driver. Hope I can re-pay the favor one day :)
 
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