Uniden Pro510XL Not Transmitting

I probably could have left that out.....kinda made me look "nasty"!

 

Ok lets move on, it happened it's over.... Now back to the amazing super powers of the Uniden 510
http://www.youtube.com/watch?v=-RVysdUinCc

 

two can and string ?

 

Weeeeelllll.... you could still try that test where that other friend brings his CB over and you swap it into your vehicle to test out your antenna and the rest of the system, let you test and/or tune your antenna, etc. Just sayin'......since you've got time on your hands an' all......

 

3 weeks! heck just swap a final from a junker as a temp measure! as long as it is a collector modulated one. Maybe a bad idea but i have done it with another CB.

 

Does anyone else see a burned resistor? What is this one's function?

 

I have no schematic nor do I have a 510 here to look at. Therefore all I can do is make an educated guess. A good idea to trace the foil on each side of the burned resistor. The final base is the lead on the left side closest to the side wall. If from the final base to ground it should be 15 ohms 1/2 watt. By the way this resistor burned is proof positive I was right in a previous post the final is lunched and you are talking off of the driver transistor with only a few milliwatts of RF power. When the final failed it shorted reverse collector to base. This allowed the rail to flow backwards through the 15 ohm resistor burning it either open or at least radically altering it's value. Do not power the radio after installing the new final until you replace this resistor. Also check the 6 ohm resistor from the base to a capacitor heading towards the driver collector. If not 6 ohms (5.6 IIRC) replace it. Odd value not easily obtained just use a 4.7 ohm, will work fine. 1/4 watt is OK for this one but 1/2 watt will do fine if that is all you can find. I doubt the 6 ohm resistor is bad however. Honestly this looks like an easy 15 minute fix and you will have a nice CB which only cost you about $2.00 to repair. Pay close attention to exactly how the insulating hardware goes, do not forget new thermal compound, and use an alcohol soaked piece of paper towel to clean the wall of old compound and grit for good heat sinking of the new final.

 

That must be one of the old style 510's. Mine does not have all those adjustable coils and the rest of the RF section is completely different.