Hi there,
Recently I bought broken Bowers & Wilkins PX7 S2, the problem with them is that battery discharges on its own even with headphones turned off. It is a quite common issue with this model and even with model higher PX8.
With help of thermal camera I found out that there is one IC that is hot even with headphones turned off. To check if I'm correct I bought another PX7 S2 working one and replaced small charging board with this IC and problem solved, battery no more drains on its own. After changing board back to original problem returned so I'm 100% sure problem is on this small charging board and because only part which is getting hot it this small glass IC I think this might be a problem that a lot of users encounters.
Problem is that this small glass IC has no marking on it, it is glued with black epoxy so there migh be possibility that I scratched marking with epoxy but chances are small.
So there my question, do you have any possible ideas what IC might it be? Whole circuit is shown on photo, there is nothing more on this board only 3 pins to solder battery on the other side. I'm searching but without any success.
Thanks for any help or suggestions
Recently I bought broken Bowers & Wilkins PX7 S2, the problem with them is that battery discharges on its own even with headphones turned off. It is a quite common issue with this model and even with model higher PX8.
With help of thermal camera I found out that there is one IC that is hot even with headphones turned off. To check if I'm correct I bought another PX7 S2 working one and replaced small charging board with this IC and problem solved, battery no more drains on its own. After changing board back to original problem returned so I'm 100% sure problem is on this small charging board and because only part which is getting hot it this small glass IC I think this might be a problem that a lot of users encounters.
Problem is that this small glass IC has no marking on it, it is glued with black epoxy so there migh be possibility that I scratched marking with epoxy but chances are small.
So there my question, do you have any possible ideas what IC might it be? Whole circuit is shown on photo, there is nothing more on this board only 3 pins to solder battery on the other side. I'm searching but without any success.
Thanks for any help or suggestions