68xl no deadkey

[bigred222]

i did the cb retards mod a while ago. then i did it with a bigger transistor and it worked and then took it apart and forgot to make sure it didnt short anything and it did and i didnt have a fuseholder on the radio and now it doesnt deadkey but it swings and sounds fine. anyone know if this is fixable.

 

[Switch Kit]

if you jumped the anti-spiking diode with this mod , it isn't always the best thing to do , that diode is there for a purpose. you have swing and audio and no DK , with a cap and "resistor" mod , the "resistor" determends the DK on the radio . Your fuseholder is only for if you were to hook the radio up backwards , blows fuse rather then the pertect diode, even then ,the diode can be replaced for the fix but I don't think that's your problem here. Lucky for you the radio is modulating and shows power swing. I have no clue what you have done here ? unless the resistor in your mod has burnt up which determinds the DK? I personally use 1 watters for those kinds of mods. What you could do is simply put the radio back to normal as it was , if everything looks good after that you can just start over again with your mod if need be.

 

[BIONIC_TEXAN88]

like switch said check your resistor, and maybe check you soldering to make sure you have good connections.

when I did a swing mod one time on a 949, I didnt have a good solder when I put the diode inline with the resistor and I had absolutely no dk but swing was good.

 

[74IN]

Try replacing the transistor.

 

[Butcher318]

I thik you mean resistor.

 

[Switch Kit]

I think your right 74 , now that I recall it . The Retards use the transistor and cap as Plowboy did before them or visa versa .

 

[AA1QD]

no deadkey+swing with modulation=bad resistor

 

[74IN]

The mod I've seen and done has no resistor(s). Goes straight to ground and uses a TIP31 and cap installed into the board where a jumper was removed.
That's the combo in the photograph.
RF Gain pot is used.

 

[KC2OST]

Transistor and pot are likely dead. Replace them.

 

[DTB Radio]

Just going by the retard mod, I'd suspect the transistor before anything else.

 

[74IN]

Just going by the retard mod, I'd suspect the transistor before anything else.

:gdlf What he said :gdlf

 

[ss8541]

here is an idea....

how about some basic electronics tests?? i see all kinds of suggestions, but none that tell you how to track down the deffective component.

like testing the base emitter voltages. the emitter should be about .5v-.6v below the base. if you have 3.5v at the base you should have about 3v at the emitter. if you have something much lower than a .5v.-.6v difference, then the transistor is bad.

you can also ohm the pot and resistors out.

just use some electronic logic and you can find the defective component/s pretty easy.