Your #2 issue is happening to me. This unusual switch mechanism is just poorly designed. It has to be very tightly gapped to work, if it is slightly too loose or slightly too tight, it doesn’t register. I have had to adjust mine several times. Even if you have it correctly gapped, with a second ball present, sometimes direct hits don’t register. You need to hit it with a glancing blow to consistently register hits. I suspect Stern will need to come up with a fix for this. Or perhaps someone in the community will come up with something.

In the first picture, it looks like you have a ball stuck on the plastic to the right of the center ramp. I’ve had balls stick there also.

Wasn’t visible there in the initial pics...? Glad you tracked it down.

Sometimes my game seems to lose count of the number of balls. Typically, it will be in Mummy MB, when the second-to-last ball drains, it kills the flipper and counts bonus. I need to pay closer attention to the precise scenario when this happens, but has anyone else experienced this?

I don’t fully understand the rules of Mummy MB and sarcophagus locks. However, it seems to be very difficult to trigger a switch connected to the captive ball when a second ball is in the lock position behind it. It is basic conservation of momentum. The first ball doesn’t move. Perhaps not even enough to trigger a very sensitive switch. Just watch a Newton’s Cradle.

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Yes, this happened to me multiple times.

Sometimes, my game seems to not realize when I’ve knocked a ball out of the sarcophagus lock into play. Then, when the first of the 2 balls drains, the game counts bonus and drains the remaining ball. Anyone else seen this? Fixes?

Hmm, that switch tests OK, but I wonder if it should be more sensitive.

What is supposed to happen when you knock the second ball into play? Is it supposed to start Mummy MB? Or something else?

Was it doing what I described before the switch? If so, I may try this.

15 minutes? You must be very technically adept. I've been working on this for the last hour and a half. You have to remove a lot of stuff to get to that switch. Once I got in there, I realize that my switch feels very stiff. It is very hard to depress. I reversed it, reinstalled everything, and a ball can't even get past it. I've adjusted it so much the little metal part of the switch looks beat up. The lower switch feels fine. I guess I'll be calling Stern tomorrow, see if they can send me a new one.

So far, I've had to:
#1 adjust the leaf switch for the captive ball, it was initially not gapped at all, and was not registering
#2 adjust the orb switch, it was too sensitive and triggering intermittently
#3 remove the plastics and bend the metal piece from the launch lane to get the auto-launch to work properly
#4 now this, trying to troubleshoot the sarcophagus lock apparatus

This game has required far more work than any LE I've previously purchased.

What sort of switch would you recommend? Source? Are these interchangeable with the originals? Any need to change wiring, etc? Are the screw sizes and locations universal?

This one: http://www.marcospecialties.com/pinball-parts/180-5119-02 , is among the parts for IMDN LE on Marco Specialties. Is it somehow better than the one you mentioned for this location? Worse?

Ordered. Thanks.

This happened to me because the orb captive ball was too sensitive and having false switch hits.

Yup, been there. Waiting for those Marco rollover switches.

I’ve seen that exact thing happen, too. Not happening at the moment, but definitely an issue there somewhere.

Orb captive ball not gapped properly. Or sticking. Par for the course.

At Lyons Classic Pinball, they did this to address the ball hops...

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I wasn’t planning on doing anything with diodes. I have no idea how. Is this necessary?

Actually, I didn’t even notice it until it was pointed out. Just very visible when zoomed in.

Same thing here, was hitting the same spot. Bent the metal guide down a little, and maxed the power, and it works every time now. Weird, it seems like it would need LESS bend, but mine worked better with a little more.

Received and installed these tonight. Lots of unscrewing, a little soldering & shrink tubing, took me about 45 minutes. (Getting good at this!?!). Good news is, these switches seem to work much more consistently. However, the bad news is that the little roller ball will not always allow the captive ball to pass over it. You can’t knock the ball back very far, and when the ball save happens and the sarcophagus lock lowers, the ball hangs up on the switches. I’m hoping this is just a matter of getting back in there and adjusting the arm of the switches a bit lower. I currently have the rollers facing down the playfield. I wonder if perhaps the upper one should be reversed (similar to how the game shipped.) I will try again tomorrow, irritated how hard it is to get to these switches to adjust.

Mine had this same sticking problem. I just lubricated the mech, and it stopped sticking.

I think it’s finally working 100%!

I have tried every combination to get the sarcophagus lock working perfectly. Every time you tweak it, you have to fully remove and reinstall the whole mech. I ended up with a roller ball switch in the upper location facing upwards (roller ball toward the head), and a regular switch in the lower location facing down.

This combination seems to register all hits, including knocking the ball free. I just played a good game and had no missed switch hits on either captive ball, and no mis-counting issues.

I also got the launch working perfectly, both manually and upon auto-launch.

Let me know if I can be of assistance with any of these issues. I think I’ve done it, and I never called distributor or Stern. (yet)

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I agree. This happens to me intermittently as well. I can't figure out why.

Check to make sure the manual plunger is well aligned.

I think this is right, I think mine stopped having this lock out period once I put in the upper roller ball switch.

Take off the plastics on the right, there is a little adjustment tab. It’s hard to adjust but even a slight change makes a big difference.

I bet it’s the orb.

A (very) minor issue. The little black pad that is on the front of the head, presumably to protect the rails when the head is lowered. One of mine keeps falling off. I used a spray-on adhesive, but it didn’t stay. Need to find a better alternative.

I was really hoping to see music volume setting reinstated.

This is due to the rear switch in the sarcophagus mech. Replaced mine with a rollerball switch, fixed 100%.

This is a relatively easy fix, check out the rollerball switch mentioned earlier in this thread. Kind of a pain to replace, but works perfectly.

I think it's #41. I replaced mine with this:
http://www.marcospecialties.com/pinball-parts/5647-12693-06

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Go ahead. I’m very curious to hear what they say. They’ve always been good to me. I’d be shocked if they took a stand against members of the community trying to improve their game.

That little grain that you can only see with just the right angle in just the right light doesn’t bother me.

Uh oh. I think maybe I set up my plunge incorrectly. I was trying to figure out the super skill shot. According to the wiki:

Super Skill Shot

Hold the left flipper and plunge to the INNER orbit. The ball will roll back down to the upper flipper. Shoot the Super Jackpot shot to score a Super Skill Shot worth 5 million points, a lit Playfield Multiplier, and 10 seconds of ball saver time.

My plunge, both manual and auto, go around the outer loop on the left, not the inner loop. Is it supposed to go into the inner or outer loop?

That’s weird. If it goes into the outer loop, with the right speed, it drops off the shelf, then comes back to the upper flipper. Now THAT’s a skill shot. That’s why I assumed this was the proper setup.

Mine doesn’t seem to register a Super skill. Is this working on other machines?

So, the Tilt Forums wiki is incorrect?

Sounds like one or more of your sarcophagus switches are not working. It's a pain to adjust them, but most people can get them adjusted to work. I replaced the upper switch with a roller ball style switch, and have had no further problems.

I feel DML1001’s pain. I think I may have been the first to try the rollerball technique. I initially replaced both (and yes, it was a painful process). I got it all back together, and the ball caught on the switches as you described. Eventually, I figured out that the upper switch should be a rollerball, but the lower switch should stay the original (if your lower switch is bad, maybe move the upper one to the lower position?). And the new, upper rollerball switch will still require a little bending to get the level right. Once I got it, I’ve had no more issues, it works 100%. No need for a new mech, imho.

See my posts #188 and #269.

Are you sure it is the slings sound, and not the lower captive ball sound? That's what was happening to me, and it was due to the lower captive ball needing to be re-gapped.

Also, the captive ball sometimes sticks. Just lubricate the edge of the saucer a little.

Play on.