Snack Man 2000 Posted January 27, 2017 Share Posted January 27, 2017 I have a mei 7512 that all of the sudden quit taking coins. The unit is in very good condition, and everything is clean as a new one. I have tried everything, and cannot get it to recognize any coins. Link to comment Share on other sites More sharing options...
AngryChris Posted January 27, 2017 Share Posted January 27, 2017 The easiest thing to do is to turn the machine off and turn it back on to see if it fixes anything. The second easiest thing to do (if you have another MDB mech) is to swap coin mechs and see if the new mech works. Then put the 7512 back in and see if it suddenly works or if it still won't work. If a different mech works but the7512 won't recognize coins at all, then there is something obviously wrong with the mech. The next thing to do is to see if it works in a different machine. Aside from that, just check the coin path and make sure nothing is in the way. It's possible that it just lost its tuning. It happens in all coin mechs. It could have also suffered from a possible power surge or the machine could be the problem. Link to comment Share on other sites More sharing options...
Snack Man 2000 Posted January 27, 2017 Author Share Posted January 27, 2017 Have tried it in several machines and nothing. It did have a dead battery that I replaced, but it was doing this before I replaced the battery. What is procedure for tuning a 7512? Link to comment Share on other sites More sharing options...
AngryChris Posted January 27, 2017 Share Posted January 27, 2017 I couldn't tell you that as I don't have a clue. I don't bother with such things but it might have something to do with dropping something like 15 coins of the same denomination at a time (ie. 15 dimes, 15 nickels, 15 quarters, 15 dollar coins if you have a tube for them). Link to comment Share on other sites More sharing options...
AZVendor Posted January 27, 2017 Share Posted January 27, 2017 You need to have the coin mech serviced. I can repair it for you if you'll email me at rbepic4gatgmaildotcom. Link to comment Share on other sites More sharing options...
lacanteen Posted January 27, 2017 Share Posted January 27, 2017 I have never been able to fix this problem. There were several firmware updates for this series over the past 18 months that only an authorized MEI service center can perform. Link to comment Share on other sites More sharing options...
tc vending Posted January 28, 2017 Share Posted January 28, 2017 I have seen this message could not get it to work sent it to vendors repair service. Link to comment Share on other sites More sharing options...
Snack Man 2000 Posted February 3, 2017 Author Share Posted February 3, 2017 On Friday, January 27, 2017 at 2:09 AM, AZVendor said: You need to have the coin mech serviced. I can repair it for you if you'll email me at rbepic4gatgmaildotcom. I tried the email and it is undeliverable. How much would it cost to fix the issue? Link to comment Share on other sites More sharing options...
Vendors Tech Posted February 3, 2017 Share Posted February 3, 2017 That error indicated the changer has lost its tuning, and it is not repairable in the field. I don't know what "causes" it. I see it happen a lot, they just do it out of the blue, after being cleaned and just serviced even. People ask how something could lose its tuning all of a sudden - and I have no idea; ask MEI. When I fix those, I have to replace the whole acceptor if it has the "coin unknown" error. I have plenty of spares that MEI has re-calibrated for me. No one can calibrate them except for MEI or their "authorized" service centers. It's a $70 part, plus the labor charge. Link to comment Share on other sites More sharing options...
AZVendor Posted February 3, 2017 Share Posted February 3, 2017 12 hours ago, Snack Man 2000 said: I tried the email and it is undeliverable. How much would it cost to fix the issue? Replace the at with @ and the dot with . Link to comment Share on other sites More sharing options...
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