Reflow solder joints on the output terminals. If the problem persists, trace the audio signal back to the specific amplifier IC pins using an oscilloscope. Teardown and Assembly Guide
Press and hold the button down for at least 8 seconds. logitech z906 service manual
Working on electronics carries inherent risks of electrical shock and damage to property. If you are uncomfortable handling high-voltage power supplies or performing surface-mount soldering, consider taking your Z906 boards to a professional audio electronics technician. Reflow solder joints on the output terminals