Courier 23+ won't key up

[adamf]

Hi all, I have a Courier 23+ in Excellent shape, was sitting on the shelf for a few years and was working but went to try it and it won't key up. Receive is fine but won't transmit. When I key the mike it makes sort of a buzzing noise but will not key. It is NOT the mic (works on another Courier plus I tried 3 different mics for the Courier 23+ but all the same. I even swapped out the relay with a good working one but no different. I looked the radio over inside but can't see anything so hoping someone may know what the problem is? Thanks for any help. Adam

[MDYoungblood]

If the relay isn't closing it is the cap. I don't have a schematic for the Courier but the buzz or hum is a capacitor that helps hold the relay closed during transmit, I can't tell you which one it is.

3's

Greg

[adamf]

Thanks Greg, I was thinking it was a cap, perhaps someone can tell me which one it might be? Again, thanks for any help. Adam

[adamf]

Just a quick note, I tested it again to see if I could determine anything and when I key up it is the relay that is buzzing. Again, the relay is fine so it is something else. Adam

[MDYoungblood]

So the relay clicks into transmit or not clicking over at all?

3's

Greg

[ Post made via iPhone ]

[adamf]

Hi, no transmit, it just buzzes, no clicking. Thanks, Adam