've got two cobra 2000 gtl, both exhibiting the same issue.

no audio in recieve.

tried to see if i had audio thew the pa circuit and yes theres plenty there, as i read somewhere to check to see if audio was present there .
kinda at a loss here on this .
meters show im receiving signal , just not through the speakers or headphone jacks

ive tried ceaning the spkr select switch and to no avail , it acts the same way
any insight would be appreciated
thanks , 51