S+ slot with flashing 21 code

[poppo]

I checked the optics and tehy are installed corectly

Then short of trying another MPU, I am at a loss. Is there any way you can post a picture of the bypass cable connected?

[B-52BadByron]

I will be glad to but I don't know how to post a picture on this web site?

[Brianzz]

Click reply and see photo below

[B-52BadByron]

Here are some photos of the machine.

[poppo]

I'm stumped. If it works with the bypass and clears the 21, I don't know why it would come back with the regular optics.

Have you closed the door all the way WITH the bypass and try it that way? This is to see if closing the door is shorting something.

Now the optics may not be aligned properly, but that does not explain the returning 21. Check the door optic wires and make sure they are not shorting on anything. It looks like the wires are rubbing against the frame. I know there is heat shrink on them, but it could be worn.

[B-52BadByron]

The game works fine with the door shut and the bypass cable hooked up.  I am thinking there has to be a short somewhere but I can't figure it out yet.

[poppo]

The game works fine with the door shut and the bypass cable hooked up.  I am thinking there has to be a short somewhere but I can't figure it out yet.

It almost has to be on the actual optics. Your bypass cable looks like it is just a set of optics held together with heat shrink, so that would indicate the optics wiring harness is good. I suppose it's still possible the optics are not aligned right. What do you get if the bypass cable is removed and the optics are left disconnected? Try one at a time.

[B-52BadByron]

If I disconnect either of the optic ends I get a buzzing sound forme the coin hopper.

[poppo]

If I disconnect either of the optic ends I get a buzzing sound forme the coin hopper.

But what if anything is displayed? Also, with the the door optic disconnected does the self test button work?

[a69mopar]

from the information given, it would pretty much lead to bad optics.  did you try a known good set?

Thanks,
Wayne

[poppo]

from the information given, it would pretty much lead to bad optics.  did you try a known good set?

Thanks,
Wayne

He said that he swapped them with good ones in the frst post. And even if they were bad, it does not really explain why the 21 clears and the machine works fine with the bypass cable, but the 21 (coin in error) comes back with the regular optics. Although the fact that the 21 is flashing/flickering would indicate some sort of short or other issue. The buzzing with the optics disconnected is also odd. Neither of my S+ machines make any noise when the optics are disconnected.

[a69mopar]

It wasn't stated that they were a known good set.  If they were an untested eBay set, they may not be good.  So, other that some extra resistance with the longer wires of the optics in the bypass adapter, what would you say the difference is between the machine working with those optics(in the bypass adapter) and not working with other optics.  Has the camera lcd test been used for the emitter?  The misaligned optics as you stated could be a possibility also.

w

[a69mopar]

Have you tried disconnecting the coin comparator?  I ask this because you changed the coin optics, but I didn't see anything on the comparator.

W

[poppo]

It wasn't stated that they were a known good set.

Later when I asked about having them in the right way and not swapped, he said:

when I replaced the door optics they were replaced with known working parts, I replaced the old optics with the new ones just as I had taken them off the machine.  But I will double check the wires tomorrow.

The most puzzling thing is that he says the game works just fine with the bypass. And bad optics should not cause a 21. Unless it's not a true 21, but some sort of glitch due to some other problem (hence the 21 flashing).   indeed.

[B-52BadByron]

I took optics off one of my slots that was working and put them on this machine, no help. I didn't do anything with the coin compartor but I can try that.  I will be out of town for several days and then i will get back to you.  Once again thanks for the help.

[a69mopar]

It wasn't stated that they were a known good set.

Later when I asked about having them in the right way and not swapped, he said:

when I replaced the door optics they were replaced with known working parts, I replaced the old optics with the new ones just as I had taken them off the machine.  But I will double check the wires tomorrow.

Thanks for taking the time to correct me  My wife may file a grievance though.

The most puzzling thing is that he says the game works just fine with the bypass. And bad optics should not cause a 21. Unless it's not a true 21, but some sort of glitch due to some other problem (hence the 21 flashing).  indeed.

This would be why I said to disconnect the comparator. 

I took optics off one of my slots that was working and put them on this machine, no help. I didn't do anything with the coin compartor but I can try that.  I will be out of town for several days and then i will get back to you.  Once again thanks for the help.

Sounds good, please let us know once you do.

Thanks,
Wayne