Hello first time on this forum, I have bought 2 neo geo games for my mvs the first one is Metal Slug X and the second one is Samurai Showdown 4, both games didn`t work so I cleaned them as explained in another topic, I even openen the carts and cleaned the chips inside both carts are 100% original I put them back together and they both did it for about a minute then they stopped, turned my neo back on and my screen stayed purple and started to scroll with a ticking audio sound, I got them out put them both back in tried other slots tried my other games they worked perfect, I cleaned them again still no succes, once in awhile they work but not for longer than a minute, I hope that someone can help me with this problem once thanks anyway 
