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Recent content by rflegacy

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    Cobra 25ltd no transmit

    Time for a new thread post I suppose. Thanks!
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    Cobra 25ltd no transmit

    Before I replaced the final with the salvaged 2078 final, a ceramic capacitor c40 was smoked and fell apart when I replaced it. Now the question is why did my new sweet 16 straight 8 blow up this radio and a galaxy in the same fashion?
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    Cobra 25ltd no transmit

    Thank you all for all the pointers. Audio transformer was fine (rare for those to go out). I got the 2078 final on Amazon because rf parts doesn't carry 2sc2078 and got the driver 2314 at rf parts and the pre driver off a parts radio. Still no transmit. Well I use to do alot of mosfet conversion...
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    Cobra 25ltd no transmit

    Yeah both d10 and d17 both checked good but still replaced them anyway. Still no transmit :(.... any ideas would be appreciated. I guess I'm just gonna start shotgunning caps. Wish me luck. THANKS
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    Cobra 25ltd no transmit

    Thanks Bob, I will check it out thanks!
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    Cobra 25 ltd no transmit

    So I have a new couple month old cobra 25 ltd. I blew it up testing amps meaning the radio would pop a fuse everytime the radio was turned on. So I replaced the final, driver and pre driver transitor. The radio now turns on and the tx light changes red when mic is keyed but shows no...
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    Cobra 25ltd no transmit

    So I have a couple month old new cobra 25 ltd. I was testing amps and blew the radio meaning it would pop a fuse everytime radio was turned on. So I replaced the final, driver and pre driver transitor. The radio now turns on and the tx light changes when mic is keyed but shows no...
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    Texas star dx 350 hdv staying keyed up after transmission.

    so So can I with certain amps/setups. I have had coax issue problems in the past, im just now getting back into it. Thanks for your concerns.
  9. R

    Texas star dx 350 hdv staying keyed up after transmission.

    Thank you very much...made my day, much appreciated! 73s
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    Texas star dx 350 hdv staying keyed up after transmission.

    just ran the amp hot for a few minutes and it didnt stay keyed up for the first time in a long time. Thanks!
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    Texas star dx 350 hdv staying keyed up after transmission.

    I think that did the trick. I forgot i had a longer jumper inline. Thanks! glad you guys had a good laugh. lol
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    Texas star dx 350 hdv staying keyed up after transmission.

    I have a texas star dx 350 hdv and I replaced both transistors with a set of matching HG pills. With just the red button pressed on the amp it works great with loud audio but after I release the key on the mic, the amp will stay keyed up via meter light on amp and make a squeel noise in my...
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    Texas star dx 350 staying hot when off?

    I would like to apologize, there were many good "suggestions" in this thread that I missed. Thanks for everybody's time!
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    Texas star dx 350 staying hot when off?

    When an Emitter and collector are shorted, the transistor cease to work as a switch. Basically, the electrons from Emitter to reach Collector by bias and hence it becomes switch. Now you have shorted, both ends of the switch its basic function as switch is defeated. Am I wrong?
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    Texas star dx 350 staying hot when off?

    Figured it out finally after wasting time with all the original bad suggestions. A simple diode test on collector and emitter on pills showed both were shorted witch was causing my drain. New HG pills and we got fire in da wire now.