A few years ago I purchased a 1979 Milton Bradley Big Trak on Ebay and the photon cannon bulb did not light up. I finally decided to replace the bulb today and discovered there were no instructions online. I I created a video that shows the procedure I used to replace the photon cannon bulb which is pretty easy! In my case, I believe the bulb was simply loose, and I didn’t actually need a replacement bulb, but since I had already ordered a replacement bulb, I went ahead and replaced it.

Please comment below with any questions, or let me know if you were able to replace your bulb!