RP2040 canbed not sending

Hi I have a RP2040 canbed but unfortunately i cant get it to send anything.
i have used the basic send sketch to test (among others) and same outcome.
it is hooked up to a rpi4 with can hat set up on CANDUMP but nothing comes through.

if i try and send any messages to the canbed the RX led flashes.

any ideas or do i have a faulty board?