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The device works for 30 minutes, then shuts off. After cooling down for 10 minutes, it works again. Root Cause: Overheating of the HSPS V606 TOP circuit. This is often due to dried-out thermal paste under the heatsink or a failing 22µF 50V capacitor in the primary control circuit. Fix: Replace all small electrolytic capacitors in the primary section (specifically the one feeding Vcc to the TOPswitch). hsps v606 top