Frigidaire Affinity Only Works on Low Heat

I found a previous post and did some troubleshooting just want to make sure ive covered all my bases before I order the part. I get E68 and E4A on the diagnostics. Not a sticky button and I tore apart the dryer and measured the Ohms on the thermistor on the blower motor and got 48k ohms. I attempted to measure on the L1 and L3 legs of the power patch panel but get nothing. Did this with the unit unplugged. I got the circuit card out and looked it over, no visible swollen or burnt caps/resistors. Any other ideas before I order the main control card?