Question about Cobra 148 GTL 120-Channels Base CB Radio
I have a 12volt cobra 148gtl dropped a negative across a postive and blew my 2amp fuse replaced fuse with new 2amp and now no lights on cb have power @plug has 12.4 volts any help or direction would be greatly apprecated thanks
SOURCE: cobra 148gtl
tomcat 1 back ...i have found the fault no modulation on am/usb/lsb.tr -23 a bc458 transister .replaced this transister and wow modulation on all 3 modes thanks zeppfrog for telling me where to look .
Posted on Mar 01, 2007
You need to open the unit up ( remove the case/cover). Then remove the 4 screws holding the face plate on. Remove all the knobs ( they slip off) . remove any screws holding the meter on ( there may be none depending on which model you have ) . slide the meter out of the face plate and replace the meter with a new meter. Note: The meter light needs to be reistalled in the new meter. It simply slides out the side of the old meter and slide back in the new meter. Replace all the screws, and the jobs completed.
Good Luck and a good weekend to you.
Posted on Jan 07, 2008
The problem is most likely the audio ic . open the radio and see if the diode 44 is blown or see if you see anything that looks like it got hot around the plug area. if not contact me and i will buy it. is it an old or new 148 gtl.Read more
Posted on Dec 06, 2008
SOURCE: CB keeps blowing fuses
There are a few common reasons the fuse keeps blowing:
1. The transmitter final transistor is bad, it usually is directly connected to the 12v source and not switched by the power switch.
2. The power wires were accidentally reversed I.E. positive to ground, neg to 12v. There is a protection diode on the circuit board that did its job and is now shorted. it will keep blowing fuses until its replaced.
Posted on Jan 01, 2009
Check the ground. Make sure its grounded well on bare metal. To see if the ground is bad, or not making good connection, disconnect the antenna and turn it on. if it does not power up, that means your ground is bad, and it was grounding only through the antenna.
Make sure not to key up with out the antenna connected.
Posted on Feb 08, 2009
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