Chosen Solution
The mic is working inconsistently. When the mic boom is moved the sound cuts. So loose connection. Problem is - I can’t for the life of me find out how to open it.
Well I learned something! And broke something along the way :P
One should NOT attempt to pry of the sides. They will come of, but you will destroy the threading of 3 screws.
What you want to do is find a flat screwdriver or similiar and press on one side of the hinge. (the front one if you keep the mic on your right.
I hope it is visible that that can be pushed out. If you pick the wrong side (like me) you’ll break the little bit it pivots over. Should you succeed you’ll have fine access to the innards.
Ear pad / Speaker Both hinge pins are quite long and look like this:
They fit into holes in the ear pad / speaker assembly. I wouldn’t worry though which side you disassemble first. Though the hole approximately opposite the power switch looks easier to slip onto its pin:
It appears both would be equally difficult to disassemble:
Battery Any li-po battery with a thermistor (white) lead, approximately the same maH rating and PCM should do. The XINJ LP502035 in my spare parts bin fits a bit too snugly, but works:
Yes, despite the above advice, I managed to break off a pin. :(
See if this video helps you tear into it: https://www.youtube.com/watch?v=EHEiUoMi…
I successfully opened the mic side of my Evolve 65 and re-soldered the wire which connects the non-mic side speaker to the circuit board. I used the tool in the picture below to push in the tab which connects to the pin.
See the tab in Picture #2 from Fred Fierling @fff666. I can confirm that this tab is on the “the front one if you keep the mic on your right” as Christian Kjaer @fizzyelf said. I think it would be pretty hard to break this tab by pushing it in because it has reinforcement on the backside. If you pull the earpiece as you push in the tab, it will slip off when you pushed the tab far enough. Good Luck!
Kurt, I am hoping you are still following this - so here is an update on the Evolve 75 - which is what you have on the photo. Do NOT follow the evolve 65 instructions - I did and broke one of the tabs. Instead on the OPPOSITE side from the one you are showing on the photo you will notice a small Torx t5 screw. Unscrew that one, and one that side will popup. The opposite side comes off by lifting up the orange speaker holder slowly to around 30 degrees and it simply unhooks. the speaker wires are very tiny so don’t pull too hard. the rest of the stuff is held in place with Torx t6 self tapping screws into plastic, INCLUDING the back cover. once you take those off you have access to all boards and wires. - so that is how to open them up. Downside - my microphone still does not work, so I suspect I may have broken links from the microswitch to the board - it has a tiny printed links on a tiny capton tape so I may simply solder the microphone directly and mute and unmute with the buttons instead of the boom Hope this helps - bot sure when I can get some photos - But with the approach above it took me all of 5 minutes to open the boom side of the headset. the other side should be just as easy -and that side is the one with the battery. there is a youtube video on how to replace the battery on Evolve 75 -which is where i got the information on the torx t5 - credits where credit is due.
Everything I have indicates that I have this same model but mine looks different and I don’t see any pins or what is shown in any of these pictures. Here is what mine looks like. Any ideas how to take it apart? The model is HSC040W. I’m trying to post pictures but am not having much luck.
Best instructions I’ve found:
