mvs 4 slot audio issue on slot 2 only

[Corgiboltz]

I am having an issue on my 2nd slot of my 4slot MVS board. Audio sounds blown out and comes in and out. Couple of members have mention a capkit will likely not fix this. Any help or advice would be much appreciated

video of issue

Thanks!

 

[channelmaniac]

Clean the slot and the cartridge.