Cobra 19Ultra stone dead receive help

Has anyone ever have 1 of these little cobra 19Ultra. It has no receive stone dead i put another radio next to it with dummy load and the 19ultra had nothing on the meter. It transmits and has good audio but no receive. Tried cb tricks it has some 19 schematics but no 19ultra.

Would anyone have a schematic for the pictured radio or info what might cause no receive?
thanks for any info

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