Batboard

hi to all,
i have a couple of 350 128ch radio's that are playing up....hoping someone out there might help.
power on...all lights light up chaNNEL UP AND DOWN WORK....but NO VOLUME.
AFTER TAPPING AROUND the micro end ...i can get things up and running.but what could the problem be...??????

any help please...

[email protected]

Internal speaker disconnected?

Did you just get acquire them?

Or did both of them suddenly stop...