First post here so be gentle!!
I just bought a spider mkIV and the FBV MkII (looks unused) second hand. All of it was boxed and in immaculate condition. I plugged the FBV in and it initially flashes the volume / tuner leds then all go out (I have recalibrated it).
All functions work as it switches channels and does volume / wah but there are no leds lit up.
The FBV is recognised by my pc and I updated the firmware but it will not recognise the amp either so I thought I may have a cable problem (the cable was unused and was still in original packing).
I have tried another cat 5 cable but had the same results.
Any ideas as to what I could try?