The Defpom Forum, for RadioMods, S&M Software and Music by The Defpom

I have a cobra 142 gtl that I purchased from a friend. I dont know the history of the radio. The radio lights up the meters dont move and I cant get it to key up. I have no sound from the speaker. When I key the mic the transmit light dont come on. What is the best place to start aon this radio. I have some electronic knowledge but limited tools to work with.
Thanks for any help

Check IC5 (MB3756) and TR37 (2SC945) common fault on this radio. Back in the 70s I used to repair quit a few Cobra 140/142 GTL and when they came in with no RX TX it was IC5 or TR37. Hope this helps, let know how you get on.

Rick.

Thanks Rick for the help . I replaced ic 5 and tr 37 no change. The radio makes no sound at all. any other suggestions . Thanks

Thanks Rick for the help . I replaced ic 5 and tr 37 no change. The radio makes no sound at all. any other suggestions . Thanks