Question about Cobra 148 GTL 120-Channels Base CB Radio
Sound chip may have overheated or gone bad or a capacitor near volume knob..That chip has over 16 prongs and is soldered with a heat sink to one side of chassis..Sucks! Get another radio or have it serviced. Changing parts may be long & studious. May be transistors,Ic chips or capacitors..If you have all the time or solder equipment and parts. desolder blue or black capacitors changing each one(electrolytic +- types) change small black transistors with equal values and resistors near Ic chip and Ic chip(hard to do) it has lots of prongs and heat from solder gun may destroy board or Ic chip(if you have a fine point tip and carefully do it and put it on its heatsink proper with heatsink resin putty(it may work again like new. Bad mics sometimes cause sound to go bad. Audio wires run through mic also. *Change mics* first then look at circuit board..Hope u good luck
Posted on Feb 25, 2013
Take off bottom cover and see if the speaker wire came off.make sure its on cb and not on pa and make sure its plugged into the right port
Posted on Mar 05, 2008
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