Dead tyt md-380g - help!!!

[GM0CSN]

Hi,
I tried to connect an earphone to my MD-380G, but when I inserted the pin into the socket on the side of the rig, the light on the top of the rig flashed momentarily in red and the rig turned off (dead?)
Now the rig is dead, I have tried turning on whilst pressing the top side button and the PTT as I know that should re-set the rig or at lease put it into program mode? But nothing.
Any ideas? Have I killed a trusty friend?

Thanks for reading any ideas appreciated

Robert GM0CSN

 

[N4GIX]

It sounds as though you plugged your earphone into the microphone jack, which is the larger of the two sockets. The one on top, which is the smaller of the two is the headphone jack.

Both of these sockets are three conductor, so a normal headphone (2 conductor) would have worked anyway.

If it won't turn on, it is likely that you've blown something in the radio.

 

[jonwienke]

Both sockets are 3-pin, and all 3 pins are used for functions like serial communication (used for programming) and push-to-talk in addition to the mic and speaker connections. Plugging an earphone into either socket will not work regardless of whether you have a 2-conductor or 3-conductor plug. You have to use a properly-wired mic. Get a mic with an earphone socket if you want to use one. Or you will likely fry the radio.

The tip of the 3.5mm plug is connected to +5V, which is intended to go through a 1000+Ω load (the microphone). Plugging in an earphone basically shorts out that power supply, and likely damaged the radio.