(Topic ID: 76377)
Linked Games
Doctor Who
Bally, 1992
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Bernards, NJ
3 years later
The only good thing about this COVID-19 quarantine is that I finally have time to work on my DW. I have played it for years and never thought there was any problems other then the time factors advancing more then once with each mushroom hit. I thought I had a light leak so I was never concerned. I ran the tests and found Switches L1 and L2 were not working. I also found that string 1 and 2 (brown and orange) of my GI was completely out, but the topper lights where always on. My understanding is that the topper lights are on string 2. They stay on during all five GI string tests and never dim. I got my Faz guide and I am diving in. Wish me luck.
I decided to tackle my GI string problem. Thanks pinballinreno you were right on. My J120-1 was burned. I did check the fuses first (they were ok). I looked in the manual and noticed that the J120 connector and the J121 connector had been switched. I went to pinwiki and saw that on the power driver board the J120 and J121 are wired together so I guess it does not matter. The orange wire in J120-2 looked well seated but I pulled the brown and orange wires and reseated them into the connector and then switched J120 and J121 to correspond to the manual. The GI strings are back on!! Should I change out the burned connector? Are J120 and J121 the same? Makes me wonder since the orange wire looked fine.
IMG_4197 (resized).jpgIMG_4199 (resized).jpgI got my optos working. Someone jumpered the "C" legs on IR receivers Q1 and Q2. It must have been a cold solder joint. I resoldered it and it works. You can see the jumpers under the new swinks carrier. As you can see I have the blue carrier and am not having any issues. I am using the original boards so I can't say the pindora boards will work. I would go with the opinion of pinballinreno as he is very knowledgeable. I would advise
swinks to leave the colored options as the blue looks good and I am not having problems. Owners with original boards might want one of the colors. Maybe put an advisory on the order page? And thanks for designing this fantastic opto carrier replacement
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