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cobra 29ltd classic no receive
Posted: Tuesday 5th Sep 2006, 1:29
by perrym1962
I have a Cobra 29LTD classic front mic mfg date 12/04. Transmits perfectly. Receive is dead. No meter movement, nothing. Have replaced tr-23, d-1, d-2, tr-12, tr-13, and IC-4 by the advice of other sources. Thank you, Perry in Ky.. Radio was used for close range application so I was told.
Posted: Saturday 9th Sep 2006, 8:01
by perrym1962
Also replaced TR-7. Any ideas any one?
Re: cobra 29ltd classic no receive
Posted: Saturday 9th Sep 2006, 22:25
by Rick
If the radio has been connected to the PSU or Battery the wrong way, there is a good possible that FET 1 and 2 are O/S.
Try lifting to Collector of TR13 and TR11 and see if the audio comes back, also check the voltages around TR8, 9 and 10, there radios do have some bad Electrolytic capacitors. Let us know how you get on.
Rick.
Posted: Friday 20th Oct 2006, 8:40
by perrym1962
Sold radio to someone else. Thought I would let someone else mess with it . Thank's
Posted: Tuesday 9th Jan 2007, 4:46
by kennz4q
Perry I know I maybe alittle late here since you have sold the radio, but I have had a problem with the recieve on a new 29 ltd also. It turned to be R-31 is suppose to be 47k 1/6W and it was opened to 137k had very little recieve. I changed it to a 47k 1/2W and it worked fine, I think the 1/6 watt is too small.
Ken