sound advice

"tonyjenkins37" <[email protected]> Sun, 10 Jul 2011 09:15:13 -0000
Newsgroups gmane.recreation.radio.hardware.uniden.bc780xlt
Message-ID <[email protected]>
hello
 My 780 xlt has issues when on scan operation it has no sound from on board speaker However when on Search operation it has got sound from the on board speaker I have tried the usual remedies but none effective 
Has anybody got the diagrams for the board or has anyone remedied this issue any help would be great 

Regards 
Tony