Sennheiser PC37X randomly goes bad after disconnecting the cable ?
Greetings, Yesterday I was using my headset like normal with my macbook, just listening to music and on a call with people like usual, and the headset was perfectly fine. The stock wire that came with the headset is extremely long and yesterday it annoyed me very much that it kept getting tangled with itself, so I decided to see if the cable is replaceable. I pulled out the cable from the headset and saw the adapter, and looked online for a replacement. Upon plugging it back in, the audio sounded extremely muffled and washed out. Im not sure what I did wrong to make it mess up like that as I've always taken good care of it, ive had it for about 2 years and its always just been chilling on my desk, but anywho I thought the cable just went bad and ordered a replacement. The replacement came, and the issue is still persistant, so I am not sure what the issue is I've tried multiple different headsets and the issue is not with the port, and I also tried it with my windows laptop and...
Apr 23, 2024
When m9xx first boots, it consumes about 150mA. After about 6 seconds the audio circuit's power supply is fully powered-up and the m9xx draws >300mA. If the power supply can't keep up then the m9xx may shut-down completely or it may shut-down and attempt to restart the audio circuit's power supply. This will depend on how quickly the host power source drops (and recovers).
Important - do not connect the 5V/2A port to a computer USB port. The computer's USB port probably can't supply current greater than 500mA. Note that when a power source is connected to the 5V/2A port, the audio circuit's power supply starts up sooner - after about 2 seconds. Perhaps you've plugged the 5V/2A connector into a computer USB port or some other USB power supply that can't deliver sufficient current?
If any of these faults are occurring, the audio circuit's power supply will be off and thus no sound.
2: A short-circuit present at the headphone output. Any chance your headphones have a damaged cable resulting in an intermittent short - or perhaps the plug wasn't fully inserted? A short circuit on the headphone output when there is signal present will likely cause an over-current condition and the audio circuit's power supply will shut down. "OC" is then displayed temporarily. This can occur when plugging or unplugging headphones when signal is present.
OC condition when a power source is connected to the 5V/2A input often results in the m9xx re-booting because input voltage usually drops too quickly.
Note - when set to 75, you're operating at 24.5dB below the maximum output level. It would be no surprise if 75 is too low a setting - depending on the sensitivity of your headphones.
I hope this info is helpful.