Atari Jaguar black screen problem

Hello everyone,

Today I got a faulty Atari Jaguar. When i turn it on i got only a black screen, even the jaguar logo with red background is not showing (the indication of bad contacts in the cartridge slot)

I'm connecting it to the TV using the original Jaguar RF adaptor, this works perfectly attached to a TG-16

Please help me giving me ideas for common related problems and its solutions.

Thanks in advice

I recorded this demo video: