Sony xb900n headphones power on power button issue (solved)

the headphones didn't switched on for some time even though the reset function was working while power button is kept pressed , or charging or working while the headphones Jack was connected..
the oxidation of the ribbon and circuit board connector was the issue

[@SoulfulEchoes01]

Hi, are you from Sri lanka? Do you repair these headphones?

[@robertreynolds2212]

I'm fixing to open one up, because the left earcup quit producing sound. Hopefully the solution is easy to find.

[@ministart1]

Do you know what's the name model of the button? I need ro replace the power button but i can't find it (Sorry for the bad English)

[@mustastic6936]

How do you remove the ribbon?

[@chandanahangawatta2231]

just by pulling , the ribons are not locked, theycoem with the plastick price whcih gives them enought strenth to be strong when pulling oout and inserting. thats it..

[@chandanahangawatta2231]

and to tell you , this isuee never happend again and my XB 900 is working great still