My build plate won't heat up. Any Ideas?

[Cmwade74 0]

I usually get an Error message that I can refer to, but none this time.  When I try to start a print it won't heat up.  I've checked all connections from plate to board.  Any suggestions would be greatly appreciated.

 

[Cmwade74 0]

Ultimaker 2+

[geert_2 502]

A couple of years ago this has been discussed here, with good explanations and photos. If I remember well, the most common was that the connections at the back of the bed broke, and how you could repair them, but I am not sure. Maybe you can find these posts again?