I was talking on my radio last night and noticed the radio was getting really hot on its left side near the back of my radio.
A few minutes later I had no AM audio output from my radio. If I turn on the echo control I can hear the echo (My voice with echo) and roger beep through the talk back but I still get no over the air AM audio out of my radio. With the echo/talk back on I can put my microphone right next to the radios speaker and get no feedback. I checked all the wiring comming from the microphone jack of my radio and it is as it should be.
If I put my radio in PA mode and key the microphone I can hear my voice comming out of the radios speaker when I talk. I have to turn down the mic gain or else I get tons of feedback.
If I use FM mode the radio works as it should. It also does not get hot if I leave it keyed up in Fm mode for a few minutes.
In AM mode if I leave the radio keyed up it starts heating up within a minute.
The receive is working as it should on AM and FM as well.
I have many microphones and have ruled out any problems with my microphones.
There are two green looking transistors (the audio chip in the middle of them) on the side of my radio the heat is comming from. The heat is comming from green transistor closest to the back of my radio.
My power supply is running at 13.8 volts. When I key my radio it is drawing around 1.5 amps on AM or FM. The wattage output is 6 watts when the radio is drawing 1.5 amps. If I turn the RF power control all the way down (2 watts) the radio draws around 1 amp on AM or FM. When the radio is in RX it draws around .5 amps on AM or FM modes.
Any ideas?
A few minutes later I had no AM audio output from my radio. If I turn on the echo control I can hear the echo (My voice with echo) and roger beep through the talk back but I still get no over the air AM audio out of my radio. With the echo/talk back on I can put my microphone right next to the radios speaker and get no feedback. I checked all the wiring comming from the microphone jack of my radio and it is as it should be.
If I put my radio in PA mode and key the microphone I can hear my voice comming out of the radios speaker when I talk. I have to turn down the mic gain or else I get tons of feedback.
If I use FM mode the radio works as it should. It also does not get hot if I leave it keyed up in Fm mode for a few minutes.
In AM mode if I leave the radio keyed up it starts heating up within a minute.
The receive is working as it should on AM and FM as well.
I have many microphones and have ruled out any problems with my microphones.
There are two green looking transistors (the audio chip in the middle of them) on the side of my radio the heat is comming from. The heat is comming from green transistor closest to the back of my radio.
My power supply is running at 13.8 volts. When I key my radio it is drawing around 1.5 amps on AM or FM. The wattage output is 6 watts when the radio is drawing 1.5 amps. If I turn the RF power control all the way down (2 watts) the radio draws around 1 amp on AM or FM. When the radio is in RX it draws around .5 amps on AM or FM modes.
Any ideas?
