MV2F Graphic Issue

[NeoGeoFanatic]

I have a MV2F board that has some graphic issues.

It sat in a cab for several months. I powered it on today and started to see these lines on some of the graphics.

• I have cleaned contacts on games
• I have cleaned contacts on board
• I tried several games
• Same thing happens on both game slots

Cleaning the contacts or game would generally fix this issue. I noticed that all the games I tested had the same issue,

I did not see the issue on the test menu.

Any one had this issue? Maybe one of the chips is bad?

Pictures:

https://imgur.com/a/P1qdSrV

 

[BIG BEAR]

Looks like a zmc2 issue,perhaps a broken trace/track.
The original battery has been removed previously I hope.
BB

 

[NeoGeoFanatic]

Ok. Thank you.

I believe so.

 

[BIG BEAR]

If not the zmc2 it could be a broken track/trace between a 257 and the cartridge slot. Do you get the same results from both cartridge slots?
BB

 

[NeoGeoFanatic]

Yes. Same exact behavior on both slots. I am a little surprised as to what happened as the board was not moved at all. It sat inside the cab for several months and was working fine the last time I powered the cab. I turned it on yesterday and that's when it started.

I am leaning more towards a bad chip.

 

[BIG BEAR]

Yes. Same exact behavior on both slots. I am a little surprised as to what happened as the board was not moved at all. It sat inside the cab for several months and was working fine the last time I powered the cab. I turned it on yesterday and that's when it started.

I am leaning more towards a bad chip.

No.it appears to be a bad track coming from the zmc2.
BB

 

[maki]

Any one had this issue? Maybe one of the chips is bad?

Take good detail photos of the battery and the area around it, and yes, the ZMC2 that @BIG BEAR mentioned is in that spot as well.

These old batteries have leaked most of the time, eating away traces.

 

[NeoGeoFanatic]

Ok. I removed the batter. I did noticed some corrosion on some of the end of the traces that connected to the Zmc2 chip.

I cleaned it out and this is what it looks like but still have the same issue.

https://imgur.com/a/Cq5j76R

 

[Neo Alec]

Yeah, those holes look very suspect. You should test the traces off the ZMC2 for continuity with a multimeter and patch any broken traces.