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Can u help me ?what part can i replace thankS

@limwel86 you have not told us what you have checked. Do this before trying to replace any parts: Timer indicator is blinking and the system will not switch on. • Unplug the system, then plug back in. Wait for one minute then switch on. • Make sure the fan at the rear of the system unit is not being blocked. • Check that the speakers are connected correctly. • Make sure the voltage of the mains power source is correct for the model. Let us know what works, if anything, for you.