SY77 effects not working

ey guys, I just got a Yamaha SY77 and had to replace the battery. I performed a factory reset and all is well except the modulation effects aren’t working. When I go to edit them on a patch the reverbs all work and changes to settings can be heard, but the mod effects like chorus and flanger don’t do anything even when balance is 100%, output 100%.

Any ideas what could be the cause? Is there an IC that handles these effects and not the reverb maybe that might be at fault?