| Arcade Collecting > Restorations & repair |
| Ultimate mk3 controls not working |
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| Titchgamer:
--- Quote from: tealsnk on October 30, 2019, 11:09:08 am --- --- Quote from: Titchgamer on October 30, 2019, 07:13:39 am ---Possibly a board issue or its wired totally different. Are they both Jamma boards? --- End quote --- Yes, both are jamma boards. One thing I did notice is that the pin connectors on the umk3 board are very worn out where the jamma harness slides on. The silver on there is almost gone on quite a few. Not sure if that would cause the controls not to work. My understanding is thay mk3, umk3 and mk4 have all the exact same harnesses. Sent from my SM-G955U using Tapatalk --- End quote --- Well each control has its own pin so to have all of them completely worn out woukd be unusual. Is the ground connector badly worn away? If so that will be your problem! |
| tealsnk:
--- Quote from: Titchgamer on October 30, 2019, 11:34:50 am --- --- Quote from: tealsnk on October 30, 2019, 11:09:08 am --- --- Quote from: Titchgamer on October 30, 2019, 07:13:39 am ---Possibly a board issue or its wired totally different. Are they both Jamma boards? --- End quote --- Yes, both are jamma boards. One thing I did notice is that the pin connectors on the umk3 board are very worn out where the jamma harness slides on. The silver on there is almost gone on quite a few. Not sure if that would cause the controls not to work. My understanding is thay mk3, umk3 and mk4 have all the exact same harnesses. Sent from my SM-G955U using Tapatalk --- End quote --- Well each control has its own pin so to have all of them completely worn out woukd be unusual. Is the ground connector badly worn away? If so that will be your problem! --- End quote --- Here's a picture of the worn out parts on the board, I would say the ones on the far right look more worn out to me. The other side looks the same too. Sent from my SM-G955U using Tapatalk |
| Titchgamer:
--- Quote from: tealsnk on October 30, 2019, 11:54:13 am --- --- Quote from: Titchgamer on October 30, 2019, 11:34:50 am --- --- Quote from: tealsnk on October 30, 2019, 11:09:08 am --- --- Quote from: Titchgamer on October 30, 2019, 07:13:39 am ---Possibly a board issue or its wired totally different. Are they both Jamma boards? --- End quote --- Yes, both are jamma boards. One thing I did notice is that the pin connectors on the umk3 board are very worn out where the jamma harness slides on. The silver on there is almost gone on quite a few. Not sure if that would cause the controls not to work. My understanding is thay mk3, umk3 and mk4 have all the exact same harnesses. Sent from my SM-G955U using Tapatalk --- End quote --- Well each control has its own pin so to have all of them completely worn out woukd be unusual. Is the ground connector badly worn away? If so that will be your problem! --- End quote --- Here's a picture of the worn out parts on the board, I would say the ones on the far right look more worn out to me. The other side looks the same too. Sent from my SM-G955U using Tapatalk --- End quote --- The 2 on the bottom are your grounds (same on the other side) and look badly worn. |
| tealsnk:
Yeah, you're right. I checked the jamma harness pin out and they are indeed grounds. That definitely explains it then. Sent from my SM-G955U using Tapatalk |
| Titchgamer:
--- Quote from: tealsnk on October 30, 2019, 11:59:52 am ---Yeah, you're right. I checked the jamma harness pin out and they are indeed grounds. That definitely explains it then. Sent from my SM-G955U using Tapatalk --- End quote --- The 2 pins furthest away both sides are grounds also. |
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