Thanks a lot CapLeaker for the detailed explanation – much appreciated.

Your analysis makes a lot of sense. The damaged area is indeed on the Vcc trace, and the missing component looks like it could have been a ferrite bead or jumper.

To add more context: the amplifier produces sudden, loud "pops" or "bursts" in all speakers at once. Sometimes this is accompanied by high-pitched whining or squealing, and then it goes quiet again – only to repeat randomly. These are not soft clicks – they are full-volume spikes, as if some power rail or logic...

Hi all,

I'm currently working on a BMW OEM amplifier, part number 9 264 953, taken from a 2011 BMW F10 535i.
There's visible PCB damage near the NXP 74HCT193 chip, where a small SMD component is missing or burned. Based on shape and size, it's most likely a ceramic capacitor or resistor in 0603 package.

I recovered the loose component (appears unmarked, like a ceramic cap) and have detailed photos:

– PCB with missing part
– Close-up of recovered component
– Full view of the board

I'm looking for:
- The correct part...

Hi everyone,

My name is Luboš and I'm from the Czech Republic. I'm into electronics repair – mostly audio equipment and automotive electronics. I recently started working on a BMW OEM amplifier (part number 9 264 953) and I'll be posting a request for help identifying a missing SMD component on its PCB.

Happy to be here and learn from the community – thanks in advance!​