Perry,
i can't find the carrier signal.. cant find it with my scope. I was troubleshooting the lm6361n and powered it with it removed and now i have lost the carrier triangle wave. I even looked for it at the LM6172. Where is the origin of the carrier signal generated?
i can't find the carrier signal.. cant find it with my scope. I was troubleshooting the lm6361n and powered it with it removed and now i have lost the carrier triangle wave. I even looked for it at the LM6172. Where is the origin of the carrier signal generated?
Perry and Sean,
sorry for the delay...yesterday i had no carrier wave on pin 7. i just removed one from a parts amp and installed it and now i am making some headway. I have my carrier waveform. Yesterday i had 8v on pin 7.
Now that i have my carrier waveform the mic4420 has a nice square wave on the outputs of both. I also have the correct waveforms now on both the railswitchers and the audio outputs. I have about 12volts on the speaker outputs still.
I have a few things left to check and hopefully have this one wrapped up.
sorry for the delay...yesterday i had no carrier wave on pin 7. i just removed one from a parts amp and installed it and now i am making some headway. I have my carrier waveform. Yesterday i had 8v on pin 7.
Now that i have my carrier waveform the mic4420 has a nice square wave on the outputs of both. I also have the correct waveforms now on both the railswitchers and the audio outputs. I have about 12volts on the speaker outputs still.
I have a few things left to check and hopefully have this one wrapped up.
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