I do not have the problem (yet) but I like to be informed to prevent any damage. I read a lot about the tie back on the drop target in STTNG but I did not find any clear, simple answer to the solution. As soon as the thin purple/green wire on the drop target coil gets loose the 8 driver board and the diverter on the subway gets damaged. There is a method of preventing this but I did never understand what to do exactly. As far as I learned it should have been done correctly in production but wasn't done in a lot of machines. Can somebody explain what to do - best would be by pictures!

The posting is a little bit confusing. How is the tieback done? A photo of the finished mod would be great.

Thanx! Sounds very interesting. It would be great to have a photo of the first method (with the fourth wire). Just to visualize it...

THAT's the best solution! Thank you very very very much for finally clearing this up!

Now I can see ALL!

Is there something additionally necessary or is it really only the tieback wire to J107/1? I did not look at the board - is the diode already there?

Thank you very very much! I think this will help many many STTNG owners to protect their machines...