I've never encountered that issue unfortunately. Do you have any other Supernova carts that you can test?
The biggest issue I've encountered with these boards is that they glitch out when the CR2032 dies and messes up the RTC.
To me it sounds more like a motherboard issue but I'm no expert...
I never actually modified my board, totally not worth the risk! I just said that was the only way to upgrade it unless reprogramming becomes an option :)
You're more than welcome to sell it at whatever price or to whomever you like but I just thought I'd make sure that people are aware that a fully working upgraded version is available. :)
The version you have is the old version which isn't plug and play and has no game names on the silkscreen. Also, to get reset to work you need to to modify the PCB.
I've decided to sell my M72 set up as it's just not getting much use at the moment.
This is a full multi set up that has been converted from an Air Duel and includes the original Air Duel ROMS.
Comes with rotary game selector and is ready to go!
PCBs are in excellent condition albeit a little...