Turbo Cool Not Working

Turbo cool not working according to the owners manual once pressed compressor should come on and also fan neither of this is happening. Any advice. Is there a self diagnostic check? I have read a few posts and it seems like a control board problem. I am asking for other points of intrest or a schematic Thanks

Does the display show “TC” after you pressed the Turbo Cool button?

Here are the breakdown diagrams and Replacement parts for General Electric PSS26NSTDSS Refrigerator | AppliancePartsPros.com

Gene.