Hi, I'm repairing some mvs mv1fz boards, I have a particular problem on one, the player 1 start button doesn't work. The joystick is perfectly working, if I plug it into the player 2 port there are no problems. The person who sold me the board had the same problem and in the batch he put it as not working. I checked the path and there don't seem to be any bad tracks. From the diagram I see that from pin 17 jamma passes on bfx20, on cr2 and should go to pin 69 "in 20" of the neo c1. Hoping not to have to change the neo c1 for a single button can you give me suggestions on how to test the Cr2 component? I read that they should protect the card input can I do a bypass for a test? Thanks everyone for the suggestions.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Player 1 Start Button Not working.
- Thread starter rain3
- Start date
Big_P Big_p
Professional
Not sure how you have checked the traces but I would double check the trace 'bus' that runs past the battery area closely, an old leaking battery commonly kills button traces in that area. The reason I would double check it is because if it's not a trace it's likely the neo-c1 and they are not much fun to replace.
I would check the resistor array first, there's a replacement you can make, and they can fail sometimes (I had a similar problem with the D button failing to register, I then replaced the resistor array near the jamma edge and it works now).
I checked, but I will do it again, the battery had no leaks and it was the first thing I took out and checked. Changing the neo-c1 is not a problem more than anything I should take it out of another irreparable board, but my goal is to repair all 11 boards I bought.Not sure how you have checked the traces but I would double check the trace 'bus' that runs past the battery area closely, an old leaking battery commonly kills button traces in that area. The reason I would double check it is because if it's not a trace it's likely the neo-c1 and they are not much fun to replace.
Yes this was one of the doubts. Can I check it with the tester before unsoldering it? Do you have any indications?I would check the resistor array first, there's a replacement you can make, and they can fail sometimes (I had a similar problem with the D button failing to register, I then replaced the resistor array near the jamma edge and it works now).
Pin 69 of the Neo-C1 is p1 Start maybe you can probe it for activity.Yes this was one of the doubts. Can I check it with the tester before unsoldering it? Do you have any indications?
Yes i know tnkz for reply.Pin 69 of the Neo-C1 is p1 Start maybe you can probe it for activity.
Big_P Big_p
Professional
Definitely check the pull up resistors first but typically I have found input issues being a trace or NEO-c1I would check the resistor array first, there's a replacement you can make, and they can fail sometimes (I had a similar problem with the D button failing to register, I then replaced the resistor array near the jamma edge and it works now).