if you can figure out what the guy is talking about, see this:

http://wiki.cdyn.com/wiki/index.php/Magic_Screen_Feature_Unit_Burnt_Coil

since very few people can make sense of it ... including the guy who wrote it ... the short answer is your reflex unit wipers are likely out of range and causing a short.

post a pic of your reflex unit wipers ... need to see where the 6 finger span is wrt the wiring on the disc edge.

jumper wires? The added wires on the main harness in the background? Those could be anything - need to see where they go.

the wires on the wiper fingers go thru the coil spring and attach to solder lugs. A good test is to grab each one and give it a tug. If it pulls off the finger, it was due for a resolder anyway.

if using something like pbr grease, a really thin smear is good enough. If you can tell it's there, there's probably too much

pic needed is the reflex unit ... bottom left one on back door. The bottom of the trip bank will block the view of the wipers a bit, but do the best ya can.

ok, that's bad.

don't know if the reflex unit is reset, but the wipers are probably on backwards. Remove the center screw, pull off the wipers, spin 180 degrees and put them back on.

when the reflex unit is reset (see step 1 of https://bingo.cdyn.com/techno/howto/reflex_wipers/), the wipers on the inner and middle rings should be on the end rivets of the 3 rivet arcs.

the entire writeup at the above link applies to your game, so the pic in step 6 is where the wipers should be at reset. Diagram below.

the wipers should never be able to reach where they are now. If when manually spinning the reset ratchet the wipers don't stop, a pin is broken inside the unit. You can either fix the pin or disable the reflex unit stepping after setting the wipers in a safe place ... usually the normal reset position so the game is as liberal as possible.

btw, in this case, it's not the 6 finger span causing the problem, it's the wipers with the sharpie marks. The short circuit is caused by the 10:00 one resting on the wiper feed (the wiper poking up from the contact plate).

reflex-laguna_beach-w-770b (resized).jpg

here's a pic of part of what bingobeast is saying ... make sure the slip ring wipers are in the right grooves.

in this case, it's easy ... one per groove.
int-laguna_beach-spotting_wipers2 (resized).jpg

there's many wires on the spotting disc edge which if shorted to adjacent wires could cause the problem, so do a quick visual check.

it's not that, verify the 50V disappears when if you push down the armature plate on the yellow score stop relay.

if it does, stick a piece of paper between the contacts on the top switch of the yellow score stop relay. That'll keep the 50V off the MSFU coil. Leave a meter probe on the fat orange wire 70 and move other probe to wire 93-12 on the MSFU disk (see manual diagram). If you have the 50V there, you can take your time sticking paper between switch contacts and under wiper fingers to figure out where it's coming from.

you familiar with reading the schematic?

your reflex unit is not resetting to the most liberal position ... but that isn't causing the problem and you can fix that later.

45-6 is attached to a slip ring wiper and is feeding spotting wiper D. It's in the chart at the top/right corner of the diagram. Not obvious, right

unfortunately, a wire off the disc wouldn't hurt unless it was shorting to something.

next test is to turn the spotting wipers counter-clockwise with your finger and see if any position of the wipers causes the MSFU step-up coil to stick on. The ratchet will make click noises ask you turn the wipers.

when turning wipers backwards, watch and make sure the tips of the wiper fingers don't snag rivet edges. If they snag and you keep pushing, you'll bend the wiper finger and you'll probably have to remove the wipers to straighten it back out.

one problem is when you cycle the game, it's possible for the circuit to be disconnected by other things ... then you wind up with a problem that only happens when a circuit is active, and that can be random.

if spinning the spotting wipers backwards doesn't make the MSFU coil power, you're going to need to make sure some of the circuit is closed. Put one meter probe on wire 70 and the other on wire 91-13 on the MSFU. Cycle game until you see 50V, then turn the spotting wipers backwards.

if you want to see bad unedited video, look at https://bingo.cdyn.com/video/spotting_wipers.m4v. You can see the 16 pulse cam switches toggling in the lower right corner of the video.

back to bingobeast post #2 ... check 16 pulse cam switch 1A to make sure it opens. You can do that with the power off and spin the mixer motor fan blade with your finger which watching the switch.

if you can get the coil sticking on, and it's not 1A, hopefully you can hear when the coil is on ... it often buzzes. If you turn off the game, you can manually hold down the anti-cheat relay coil armature when turning it back on (use a power strip with a switch). With the anti-cheat active at power on, the game keeps doing whatever it was doing when you turned it off.

per the diagram on manual page 165, 1A is the switch at the "bottom" of the stack. Pic below of where the 16 pulse cams are.

if not sure, try taking a video of the switches when the motor is running ... camera looking at the sides of the stacks so you can see the contacts, and it can help to hold a piece of paper between the two stacks to block the stack(s) behind the one you want to watch.

gloss_mixers (resized).png

you never cycled/reset the game?

the reset coil on the MSFU? The only time the reset coil should power is when the playfield shutter slides open to dump the balls. The MSFU, score units and red letter unit all reset at the same time. If one coil powers, they all should.

sounds like you have a short or partial short someplace.

grab this:
https://bingo.cdyn.com/machines/bally/laguna_beach/resources/manual-laguna_beach.pdf

you can zoom in on the pages.

91-13 is on the top lugs. It's the 9th one away from the back door wood.

after you shoot the 4th ball, the before 4th selector lock trip relay should trip. That will enable the R button. Push the R button and the search wipers release and scan for a win.

are you getting that far?

don't really understand what you mean there since the spotting wipers spin every time the game is cycled (you play coins/credits to try and improve the scores and enable features).

were the contacts on the spotting wiper fingers bridging rivets when the wipers were locked and you moved the spotting index unit to center the contacts on the rivets?

if the wipers were bridging rivets, that could create your MSFU issue. Causing a payout problem isn't likely, but as beast said, just playing the game tends to scrub contacts and flaky circuits can work better.

if you go with wood, make sure the horizontal reinforcement bolts are in the tops to help prevent splitting.

they even reinforced the metal legs with additional material welded inside each leg. It's marginally inconvenient to grab the front of the game and pull to slide it away from the wall and have the legs collapse due to the weight of the head

they switched to metal on the first screen game - carnival queen. Whether is was costs, the weight, availability of the wood, the occasional split/collapse problem ... who knows. Even on lighter 6-card games that came after carnival queen, they used metal legs. No point in stocking/using both types.

the game before carnival queen was beach time. It used wood legs and wasn't a lot lighter than a cq ... 'course, they already knew what was coming and how much the weight was going up on future screen games at that time.

metal legs is correct for laguna beach, but if you like the wood look better, don't drag the game much on the back legs and have the reinforcing bolts, a piece of the right kind of wood (I think vertical grain/furniture grade maple) is certainly strong enough to support the weight.

the pacific pinball museum bought some new wood legs a few months ago. I assume they came from pinball resource, but I'd have to ask. Boxes say they were made in china and they may not be correct dimensions for a bingo.

below is more info on legs if you wanted to make them. Not shown is the bottom of the leg which has a recess cut for the metal leg leveler mounting plate and hole drilled for leveler shaft. Shape of the recess depends on the shape of the plate. There were round and rectangle ones.

antisplit (resized).jpgbingo_legs (resized).png