Jazzy wont run light blinks 7 times

SOURCE: Jazzy 1121 power chair won't go

I find a lot of the controller Problems are caused by the cable running from the joy stick down to the controller gets caught on something or rubbed against something and one or more tiny wires inside are broken ... If I find a spot on the cable that is worn through, that's where I start .. Open up the insulation and check the tiny wires .. fine the broken one and repair it .. usually that solves the problem and saves you a couple hundred for the cable

SOURCE: jazzy power chair's battery runs out quickly afert being fully charged

I had the same problem I had to replace the batteries problem solved.But the batteries are not cheap

SOURCE: My Jazzy select wheelchair does not run

According to the troubleshooting sheet, the parking brakes have a bad connection.

"9 Flashes:
The park brakes have a bad connection. Check the left and right motor connections and
wiring.
Check to make sure that the power chair is
not in freewheel mode."
Pride Mobility Troubleshooting Sheets