FYI I don’t have any experience with fixing solid state games at all. I’ve done work to bring some old Williams EMs back to life, but that’s it.

The game works almost perfectly. I’ve upgraded all the playfield lights to Yoppsicles, and also installed RoyGBev’s new board with the 2021 code from Dick Hamill. Both are awesome upgrades.

The only thing I can’t get working is the light for the second A outlane in “mania”. When activated, it registers towards spelling SBM. It just won’t light up. I’ve ruled out the yoppsicle itself as the culprit.

Where should I look?

Thanks slochar i do have continuity between the yoppsicle and q20. Does that rule anything out?

Hey slochar and BigAl56 i finally received new SCRs. I replaced the one at q60 on the lamp driver board and the outlane A still refuses to light.

I double checked that the yoppsicle itself is fine - it is. (I used a jumper on the neighboring inlane I.)

I double checked that I have continuity between yoppsicle and q20 on lamp board - I do.

What am I missing? What else could it be?

By chained wire you mean the braided bare wire right? I jumped the other wire, the one that goes to the SCR. And no I don’t seem to have voltage at the A.

To be clear, this is what I did to try to answer your questions. I’m not very knowledgeable about this sort of stuff so maybe I did the wrong thing.

With the machine off I tested continuity between points B and Z - there is continuity there.

—

When I jumped the yoppsicle, I connected point B to point D while in the flashing light test mode. Yopp flashed too.

EDIT: Also I had replaced SCR Q60, which is not pictured.

Does that clarify anything?

BigAl56 I just saw your reply too. Did I just blow the SCR all over again?

IMG_7040 (resized).jpegIMG_7042 (resized).jpeg

A friend nearby has a SBM too. Only way for me to try another board is to convince him to let me use his. Otherwise, no.

Good call. Standby

i am learning a lot! i did just test a few of the SCRs per that pinwiki link. they all tested fine - except Q20. instead of being between .5 and .7, it read approx 1.5. should i replace Q20?

That’s a big assumption .

Despite my ineptitude, replacing q20 did the trick. I had the same issue on a playfield light on my Lost World and did the same process. Fixed on both. Thanks everyone for input!