Pioneer VSX-1122k Headphones won't stay on
I have a VXS-1122 k about 2 years old. It functions normally with one exception: when I plug in the headphone connector, it often does not turn on the headphones.
This is how I do it.
I set the sound mode to "Stereo". I turn the sound quite low, but it's still audible. I plug in the headphone connector.
Sometimes, it doesn't respond in any way, simply continuing to play through the main speakers.
Other times, I switches to one channel of the headphones when the connector is part-way in, but switches back to the main speakers when the headphone connector is pushed in all the way.
Occasionally - perhaps once in 10 or 20 times, it functions properly, and the headphones are activated with the main speakers off.
I can hear a relay or something clicking inside the receiver when the headphones are activated.
I have tried cleaning out the headphone jack with a q-tip lightly moistened with isopropyl alcohol, but it doesn't help. I've also read that sometimes the mechanism inside the headphone jack can get dusty and that it can work if air is blown vigorously through it. I've tried that as well, and to no effect.
I've switched headphones but that doesn't help either.
I've tried pushing laterally on the headphone connector, and I can feel the connector moving slightly in the jack. Often this will trigger the headphones to work and the main speakers to cut out, but unless I hold the connector pushed to one side or the other, it usually doesn't stay on.
For many people this probably wouldn't be a show-stopper, but our AV setup is next to our bedroom and I need to be able to listen later in the evening with headphones to avoid disturbing my wife.
Has anyone experienced this or something similar? If yes, were you able to fix it? Does it reasonably fixable? I suppose Pioneer probably won't cover it since it's slightly more than 2 years since we bought it.