Sony MHC-GN1300D — the same model

Description

Large center Sony main unit with the big silver volume knob 5-speaker setup Big center subwoofer Dual upper surround speakers The front panel layout matches Sony’s official design for the GN1300D series It’s a pretty powerful old-school Sony Hi-Fi system: 905W total RMS 210W subwoofer 3-disc DVD changer USB / AUX Karaoke inputs Dolby Digital / DTS support Since you said it shuts down automatically, and seeing this full setup, my guess is one of these: Subwoofer amp section overheating (very common) One speaker line is shorting Cooling fan issue Power amplifier board fault / dry solder