Problem contact with MVS2F joystick port

Have a slight bad connection on my MVS2F joystick port for player 2. Checked out the pins within the port to the solder points underneath with a meter and all are fine. It only affects button C and Start. If I put very slight pressure sideways on the plastic port (not the joystick plug within the port) so it twists a fraction against the board the contacts are fine.

Any ideas please?!

Hi Max,

I would recommend resoldering the joints, do them one at a time. You can check for cracks in the board when you remove the solder.

If that doesn't work, you may need to relocate the joystick port and resolder to points further up the track.

Cheers, Lee

Sounds more like the pin connectors in the joystick hood are loosening. What kind of stick is it Old Style or New? If it's Old Style you can pop the hood open and remove both pins 11 and 12 and tighten them.

Hi guys - thanks for the replies. I have tried it with both an old stick and a new pad - both exactly the same. Just to be precise though - wiggling the plug within the socket does nothing but slightly twisting the socket against the board (with the plug not moving inside the socket itself) makes the contact. But - as above with a meter there are no broken links between each pin and the main rows of solder points underneath - would suggest the problem is further 'in'?

The contacts could be worn or slightly bent. Try gently bending those 2 pins downward just a bit.

Needs a little more careful 'technical' bending (!) but I think it may be working - is this a fault you have come across Xian Xi?

Yes. Most joystick problems are because of the controller pins not making connection which is why you get continuity from the pin to where it goes but when connected it doesn't respond. Since 2 controllers do this then the controller port is the issue most of the time.

Check the test menu and see if the buttons are stuck in an "on" position. If they are stuck in the "on" position then it is something else.

Thanks for that - no (not stuck on) I was using the test menu to check them out. Holding down the button while pushing the port and releasing made/broke the contact. Thanks again.

Hello i'm new in this forum, i'll try to speak in a good english.
I've a problem with my mvs2f, it seem to be the same problem.
Have you the "schema" of the borad or can you help me to fix it?
The 'up' player two does not work properly.

Thx by advance

cinc said:

Hello i'm new in this forum, i'll try to speak in a good english.
I've a problem with my mvs2f, it seem to be the same problem.
Have you the "schema" of the borad or can you help me to fix it?
The 'up' player two does not work properly.

Thx by advance

Click to expand...

Check if it works on the jamma edge. If it works there then it's the pin on the port or pin on the joystick plug. If it doesn't work on the jamma edge either then it could be the resistor pack.

If it's the JAMMA edge connector that isn't working then check the trace leading from the connector. I've seen corrosion damage more than once there.

Hi guys - thought I'd bump this original question up as I had another go at this problem this week and still no luck. I have tried bending the pins gently, cleaning them and abrading them v.gently but still no luck.

If I was to de-solder and remove the sockets to check more thoroughly is there a knack to doing this? Or just pick up the solder with braid and gently free them - never been too hot on de-soldering...

Or if anyone has more feedback on the dodgy ports problem that would be welcome.

Thanks all.

Don't desolder... yet. That's a last resort.

Do some continuity tests first to locate the problem. Plug a DB15 male connector into the female socket on the stick cord. Open up the stick case and check every line from where the wires are soldered/crimped inside the case to the pins on the rear of the male DB15. If every line tests good repeat the test with the stick hooked up to the 2-slot turned over so you can reach the pins on solder side of the port with the multimeter probe. Make sure the pins are not covered with dried flux forming a crust or you could get no reading due to that. You can also put the probe on the pins of the ferrite beads, those blue things behind the ports. If everything tests good here too the problem must be deeper on the 2-slot PCB and you will need to check the resistor-capacitor arrays, etc.

Thanks - I'll check and report back.