Copper Talk » Open Forum » Archived Messages » 2002 » Archived Messages 05/01/2002 to 06/30/2002 » Cobra 142GTL « Previous Next »

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shyfire
Posted on Tuesday, June 18, 2002 - 10:41 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Hi All, I am new to the forum so I will see if there are any good techs working this site.
I have a Cobra 142 that does everthing just like it is supposed to do with the exception of receive audio. It is receiving because there is reflection on the meter and I have found it with my signal tracer. Now...here is the problem, I have laborously checked voltages in this unit. The correct voltage exists everywhere I've checked except in the are and including TR13. I have traced and pulled most of the majority of components in this area and they all checked good. I am stumped here. Does anyone else run into this problem??? If so, please let me know what you did to repair the problem. Thanks, Don
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Tech181
Posted on Saturday, June 22, 2002 - 2:27 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

shyfire,

Audio Amp IC4 #TA7222P. Caps around the audio amp leaking or shorted. Speaker bad. Shorted ext speaker jack. PA on. Bad / miswired / shorted / microphone.

Steve
Tech181
Tech181@copperelectronics.com