Multi Cart not working on Original Famicom

[LandLord]

Hello,

I've purchased one of those Cool Boy multicarts with 198 in 1 and 400 in 1 games.

Unfortunately I couldn't get them to work on one of my original Famicoms. I have another Famicom that worked without any issues.

What could be the issue?

Any help is appreciated.

Thanks

[FAMICOM_87]

http://www.famicomworld.com/forum/index.php?PHPSESSID=lu751lgqiuv5g88313vuj2krr2&topic=8671.0