On a 2010 laptop repair last month, the power button didn't click. It made a soft chime from the speaker instead. The fix wasn't just one capacitor. I found three bad resistors that led to the capacitor failing. Component level repair means tracing the whole circuit to find the root cause. This saves more e-waste because you ensure the device won't fail again from the same problem. Happy clients come from knowing their gear is truly fixed, not just patched up. Ever had a repair where the expected sound or sign was completely wrong?