Quoted from Shredder565:I can hear the compliments now...'your wall art better not wreck my trophy art!, or scratch the walls!' ;o)
One bad soldering job done, about 30 more too go. I'm afraid too test these things. if something malfunctions, is there a quick way to stop the test/damage?
[quoted image]
2 things:
#1) Your soldering needs to be better.
The wire DOES NOT have to go through the hole in the coil lug. It just has to be fully soldered on about a 1/4" of wire. You can do it if you wish, but its NOT altogether necessary.
You "currently" have cold joints that will crack loose and fail due to vibration. Adding melted insulation to the joint will cause it to fail.
"Tin" the wire ends before trying to solder to the coil lug. "Tin" the coil lugs with some fresh solder.
This way, the solder will melt at the same temperature, on BOTH SIDES of the joint.
Add a little solder to the cleaned tip of the iron before making up the joint. The liquid solder will help with the heat transfer, you will make up the joint faster.
If the solder wont FLOW right, add a little flux to the cooled connection with a q-tip, try again.
The 2 freshly "tinned" connections should bond together with little or no extra solder (other than the little solder you put on the tip before you started to make up the joint). Be quick enough that you DONT melt the wire insulation.
If you continuously burn insulation or the flux burns dark or black, your temperature is TOO HIGH.
Clean off burnt flux with rubbing alcohol and a cotton ball or wad of paper towel.
Make up some practice wires:
Cut 6 pieces of scrap wire, 4" long, and strip off 3/8" of insulation from each side of your practice wires.
Twist each of the 12 bare ends of the wires with fingers to keep them from fraying out. Do NOT attach wires together yet.
Flux the bare wire end with paste flux (just dip the ends into the pot). "Tin" the wire ends with melted solder via the soldering iron and a roll of solder.
Apply the solder to the iron in a big drip and then apply it to the fluxed wire.
The end result should be shiny and well coated with NO burnt or melted insulation and no badly burnt flux.
Keep practicing until you are confident and have good results. Adjust your temperature and speed of movement as needed.
Keep the soldering iron tip CLEAN with a wet sponge or a copper scrubbing pad.
Any bad joints, just snip then off and try again.
After you have all 6 wires "tinned", solder the "tinned" ends together into a circle. This will teach you temperature control and how to solder a wire in the "real" world.
This was how we learned in High School.
#2) How do test things one at a time:
My method is to use Molex connectors.
AFTER you have successfully soldered the wires to the coils, move back about 3" from the coil and cut both wires.
Strip off 1/4" of insulation from all 4 wire ends.
Add female pins the the HARNESS wire ends, Add MALE pins to the coil wire ends.
Slide the ends into the correct connector housings.
Keep track of the wire colors and match them as you go.
If there are 2 wires on a lug:
Again, 3 or 4" back from the coil:
Working on one pair of wires at a time:
Strip the insulation 3/8" and twist them together on the HARNESS SIDE.
The molex pin will accommodate 2 wires, crimp a Female pin on the twisted end of the pair of wires.
Do this for each pair of wires. One pair at a time so that you dont mis-wire a pair.
The coil side only needs one wire per pair now.
There is no point in twisting the wires together on the coil lug side, the connection is already made at the female harness pin.
You can just snip off the extra unnecessary wire from the coil lug.
Molex each and every coil. Plug them in individually and test them one at a time.
Most of the coils are 2 lugs.
Use 2 circuit .093 connectors and pins.
The flippers use 3 circuit connectors but the same .093 pins.
If unsure about Molexing, use your scrap wire and crimp pins onto it until you are confident.
I use this crimper and like it a lot:
https://www.amazon.com/gp/product/B00OMM4YUY/ref=ppx_yo_dt_b_search_asin_image
It works on all crimped connections in a game, both .062 and .093
It will also crimp barrel connectors in a pinch.
The cheapest place to get connectors and pins is Newark Electronics.
Part numbers can be GLEANED from the old Great Plains Electronics website while its still up:
https://www.greatplainselectronics.com/categories.asp?cat=35