Good news regarding defeating the coating with solvent and successfully repairing your ignitor!
My scope is a Hantek 1008C, which is a "USB Oscilloscope", which uses a laptop as the display and storage.
https://hantek.com/products/detail/13170The Hantek 1008C has 8 input channels, but only a 2.4 MSa/s sampling rate, to get split up between all 8 channels, which limits the practical use of multiple channels. The unit is inexpensive, though, about $120 retail, and intended for automotive use. It comes with "Help" information pre-programmed, that coaches the user on what probe and settings to use for a given automotive test, and even includes sample images of typical signals. Also, it comes with a clamp on pickup for the sparkplug wire, which makes it safe and easy to look directly at a spark signal. I bought an extra one of these, since I'm mainly interested in singles and twins. Hantek scope probes, attenuators etc, are of decent quality and very reasonably priced, and I think these can be used with any scope.
https://www.amazon.com/Hantek-Auto-Ignition-Probe-Oscilloscope/dp/B09NBZ6ZST/...I have stumbled across reports from a couple of folks who have undertaken the same quest you are on. You might be interested in this discussion from a Yamaha XS650 board. Apparently a Virago used the same Mitsubishi M59201P linear amp chip as is used on your ignitor board, and somebody was looking to reproduce that functionality:
https://www.xs650.com/threads/tci-m59201p-chip-info-needed.18019/That thread led to this page, from a guy who says he built his own TCI
http://www.gofastforless.com/ignition/digital.htmAnd there, you will find a link to this schematic, of that fellow's design:
http://www.gofastforless.com/ignition/schematic.pdfI'm guessing that the circuit to trigger the ignition coil is the easy part of this project, and that the hard part of the job is the variable advance timing, and the programability of that timing, if one takes the job all the way?
Personally, I suspect that what we are talking about, is exactly what these folks will sell you:
https://www.ignitech.cz/en/vyrobky/tci/tci.htmExcept, instead of letting the customer do the custom programming, they will do it themselves, tailoring their product to all the various individual models.
I'd guess it's pretty much the same story with this company's products:
https://www.carmousa.com/index.phpI think that, if a company let end users decide what advance was appropriate, a lot of folks would push their engines into pre-ignition, then blame the company that made the ignitor.
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