Electronic troubleshooting

[Max]

Glad to hear that it is working now! An S8050 transistor is a NPN so the ones I sent you should have worked. Most were lower power than the ‘50 but one was in its range…

And the ‘scope looks great for $40.

 

[Snapped-off]

Glad to hear that it is working now! An S8050 transistor is a NPN so the ones I sent you should have worked. Most were lower power than the ‘50 but one was in its range…

Can only assume I cooked the chip or something.

 

[Snapped-off]

Now the next dilemma... my original track is in better condition. Some of the white plastics are yellowed on the new piece. Dare I unsolder the wires and swap the boards over.

Anyway barring any other comments this will conclude the show in this thread.

I'd like to give thanks to @Max, @FordTruckWench, and @RPH along with everyone else who found time to chime in.

 

[RPH]

Take photo’s of both prior to dissection. I always try to confirm the wire numbers / colors are the same points. Too many times I’ve seen it called out by color on the print but I have doesn’t have those colors on my assembly. Point to point notes clean that up.
Excellent job and you increased your diagnostic tools, knowledge, and working toy!