My overload problem was caused by the cooling fan not providing sufficient air flow. It would overload at relatively low sound levels. I removed the top and back covers and removed the fan. The receiver will go into overload the instant the fan is removed. I oiled the fan and reinstalled. I was able to play "The Matrix" at very a high volume level with no overload problems. I am going to order a new fan. from WEB site http://www.partstore.com/GetModel.aspx?MfgName=Matsushita&BrandName=Panasonic&ModelNumber=SAGX650&PageSize=100&page=8#PartsearchSKUList Part number: REM0020-1 FAN MOTOR UNIT, DC 0.1W . This is the whole fan assembly, not just the motor. See fan assembly motor in "Technics SA-GX650 AV Control Stereo Receiver.pdf". Available on line for free. I hope this helps someone. Purdueman77