Hi - I merely posted the link, i've not used the tools - check the link itself in the initial post, which will send you to GitHub and explain more than this thread.
Checkerboard like that indicates that the CPU is running, it's not being held in RESET and the ROM is working - you're experiencing a RAM issue. Check all the RAM SIMM's are installed correctly, and the jumper is left OPEN unless you're using 256k SIMM's
These guys are pretty good, they have the panels you need, too: https://www.applemacparts.co.uk/powerbook/powerbook-pre-g3/powerbook-pre-g3-100-series/powerbook-pre-g3-100-series-145/powerbook-145-145b-160-165-lcd-display?special_filter_category=75
I believe @Androda makes compatible cables for...
Correct. The same SWIM is used in the:
SE/30
IIx
IIcx
IIci
IIsi
Macintosh Classic
Quadra 700
There are a few other models too, but can't be certain off the top of my head.
Just a word of warning - I purchased a flyback from Dalbani a few years ago - while it looked new, all the internal windings were melted/shorted together. I never got a refund either.