Questions & Answers for: cb wont key

...wont scan. it has been exposed to some high rf from my cb radio ( about 70 watts) after i keyed the mike, no squlech. i shut it off for about 3 mos, and it worked fine. then i did the same thing. ...

...cb channels no audio or recive has no modulation and wont key up to talk If you have no channel display or CB operation, it sounds like a blown voltage regulator that supplies power to the CB PLL ...

...cb lights dim. wont transmitt but i can recieve.its not the mic because ive tried others. Check the ground. Make sure its grounded well on bare metal. To see if the ground is bad, or not making good ...

...wont work either,i have tried a different mike and when you key it up the meter still won't swing. Plug in an external speaker to the pa jack ... Switch the band selector to pa and see if you hear ...

key up but wont quite get there as the TX enable ends up keyed via the mic @ 600ohms so the radio wont key up fully just half way the black and screen coppers are usualy connected together if they get

WHEN U KEY UP IT WONT TALK Do you have receive? If so you might have blew the voice chip. If you don't have receive or transmit you most likely blew those final transistors.

cb wont talk out and wont receve and when keyed up have both red lights on  sounds like the finals may be blown, or a modulation problem

...wont transmit i changed rf transistors still no transmit rx-tx light changes when i key up recives very good You need external watt meter& SWR meter..Change antenna..Is the radio meter keying 3/4 ...

I got 150 gtl cb ccobra it wont key up can you read a block diagram? www.cbtricks has the block diagram,schematics and service manual. Then you can create your own splashbox.

...have any dead key or modulation You are basically saying that the radio wont transmit, Does it power on at all? Does it have any sound coming out of the speaker when it is on? what kind of radio is ...