Looking for an HP 1020 power supply or Canon LBP 2900 power board? This is the correct power supply board for both printers. When Do You Need a New Power Supply Board? The power supply board converts mains AC power into the regulated DC voltages that run every component inside your printer — the formatter, fuser, and motor. When it fails, the entire printer is affected. Replace your power supply when you see: - Printer completely dead — no lights, no response when pressing the power button - Printer turns on briefly then shuts off immediately

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