Working through a recently acquired W?D and arrived here as after getting the pin playing 100% noticed that it is blowing F116 after about 3-4 hours of play time.

Pin is LCD colorDMD and all led lighting with no mods. Have not put my DMM in place of F116 but I’m pretty sure that it’s going to show that circuit operating at or near the 3amp limit when 12v is being fully tapped (all reels spinning and elevator target moving).

Wouldn’t the easiest solution be to just put the reels on their own 12v power supply?

what mods? As for getting rid of the color dmd, yeah no…

Pulled F116 and DMM probes to the fuse terminals

Attract mode is pulling 2,54 A, gameplay with the reels stationary is also 2.54 A. When the reels are stationary and the elevator 3 bank raises and lowers peak draw during gameplay is 2.77A

In attract mode and during game play the reels are held stationary by the motors

Each reel pulls about .5 amps stationary and that drops to about .2 amps when spinning. When all 3 reels are spinning total game amp draw drops below 2 A.

Does anyone else have an amp draw reading of a stationary reel?

Does the motor really need more than 2x the amp draw to hold a reel stationary than it does to spin a reel?

The pin never goes over 2.8 A during gameplay and the constant 2.54A during attract mode is enough to eventually heat up and burn a 3A fuse in F116

Amp draw at F116 as loads are added
0.015 A (j116, 117, 118 disconnected)
0.292 A (color dmd connected)
0.322 A (j117 grey grey/yellow connected)
0.431 A (j116 black black/yellow connected with opto board J1 disconnected)
1.100 A (optos j1 connected)
1.600 A (reel 1 connected)
2.100 A (reel 2 connected)
2.540 A (reel 3 connected)

The reels are either in spec or out of spec. There are no other problems to solve.

I think, at this point, I would prefer to work towards a solution without your sermons posted under the guise of “help”.

Scared stiff uses the same stepper motor (14-8024) for the backglass spider and current draw is within .1 A of what I'm seeing with W?D's stepper motor in the rotating and idle positions and would be running at nearly identical amps on the 12v circuit overall as the W?D if it was running 3 of them.

So, a dedicated power supply to unload the power driver board is in order.

Any idea why you are pulling 1.5 more amps on that circuit than I am? Also, your center real is pulling half the amps of the other two reals stationary. Can you freely rotate your center reel when the machine is powered on? (stepper motor not holding the idle position)

LOL, F116 blew in my W?D yesterday so I put in the spec'd 3A and it blew a few hours later.

I vaguely remembered going through this once before....