Yamaha RX5 problems

[lagoogy]

Hi,
I recently bought a Yamaha RX5 from Con bay (sorry ebay) and it arrived and powered up and works fine, but I cannot get it to read the waveform cart data. I have two carts and have tried both and no joy. I've selected the key assign button and can scroll through the internal sounds and can also see a CP(copy) waveform, but no mention of CART in the display.

I've cleaned the contacts on both the RX5 and carts and still no joy. Is it knackered?
Cheers

[lagoogy]

This has to be the worst forum in the history of forums lol
No matter how many posts I make no one and I mean no one answers.
Mod please delete my account ASAP on the grounds that the forum is utter shite.
Thanks.