Wow... lotsa stuff. But I’ll take a shot at one.

I had my poppers intermittently going out. I thought it was a power supply and in the process of trying to debug it I shorted two adjacent power supplies on the fuse panel and trashed a couple transistors. After a couple of weeks of getting new parts and repairing it, unfortunately the poppers still didn’t work. All voltage levels on supplies were good but no poppers.

After digging a bit more in the schematic a found that the power to the poppers didn’t come directly from the power supply board but went through the mpu first. I forget which connector off the top of my head, but all I ended up doing was reseating that connector... maybe cleaning it a bit... and I got my poppers back.

Rarely I’ll lose the poppers any more but when I do I just wiggle or reseat the connector and I’m good to go.

In the end a whole lot of grief and repair just because I didn’t dig into the schematic before starting and find it was a simple fix.

Anyway, check the schematic and the connector that powers the poppers... it may be a simple fix too.