, the room shook. The "patched" manual had turned a piece of e-waste back into a 1000-watt powerhouse capacitor ratings used in these common Z906 repairs?

If you use the original service manual to troubleshoot a Z906, you will fail. For example, the original schematic shows a 10k Ohm resistor on the feedback loop of the 5V standby regulator. The actual board uses a 4.7k Ohm resistor. Following the original will give you incorrect voltage readings.

Distorted sound or intermittent channels

The PDF had called this "Beast Mode."