Has anyone dismantled a HM-901?
I'm tired of sending this unit back to Hifiman with the same problem every bloody time (volume dropping out in one ear until light pressure applied near earphone jack), so I'd like to take it apart and fix it properly myself. The warranty has expired now anyway. I'm very good at dismantling and repairing all kinds of electronics but I was wondering if anyone can give me an early heads up on where any annoying fragile plastic clips might be.
Gut feeling is it's some kind of copper contact which relies on the unit being assembled tightly and cleanly, which is conducting a signal and lightly oxidising, or the sprung nature needs a bit of extra tension. Would not be the first time.
I had the same issue, it's a problem with Balanced/Normal knob, I got mine repaired and now its fine, or get rebuilt in U case.