Wow, great review vid! If you ever want to review anything I'm selling, let me know and I'll hook you up with some discounts! Maybe you'll become the go-to person for new product reviews. Vid's Guides & Product Reviews
I'm surprised none of the pinball led manufacturers have created a line of leds with parallel SMD resistors built into them specifically for these classic Bally/Stern machines. Seems like there would be enough of a market there to pay for initial tooling efforts pretty quick -- especially for the first manufacturer that does it & offers them for sale at even just a single Pinball show. *HINT HINT*
Anyway, nice to see some pcbs made up for this! I may be adding to the pile later this year -- have a few different ideas in mind to possibly combine it with LDB tester so it has dual functionality, but $5 per board is darn good for these in what it saves in time versus soldering resistors on each lamp socket. It was painful to see the amount of work others were doing in converting just a single machine over with perf boarded stuff or soldering to individual lamps. Nice job Hans!
One other DIY method that wasn't mentioned above is soldering SIP resistors soldered directly to the back of the board (Vid had posted a picture of this in another thread). You're out total cost of some SIP resistors & wire, so probably looking at $1.20-1.50 per header that way. Common pin on the SIPs get bent up or snipped higher than the board (so they aren't shorting to anything), then those pins are tied together with wire running between them & the wire then ties into the feature lamp bus. The other pins on the SIPs (individual resistors) get soldered to the 2.54mm header positions. It has the benefit that you're looking at & re-soldering practically every header pin on the board, which is usually needed anyway since there are almost always a few cracked/cold solder joints on those headers. I thought that was pretty clever, not sure Vid if you came up with that or someone else did.. but a great DIY method IMO.
http://www.pinitech.com - "Pinball Inspired Technology"
Kits, upgrades and test equipment for pinball machines