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Follow this guide to replace the main PCB assembly on a Mi-T-M heater model MH-0190-0M10.
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Flip the power switch into the OFF position.
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Unplug any extension cords from the included power cord.
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Use a 5/16 inch socket or Phillips screwdriver to remove the four bolts securing the right-side cover.
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Tilt the right-side cover down to access the PCB board.
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Disconnect all wires from the main PCB assembly:
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The photocell wire connector labeled CN3 on the board
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The white wire connector labeled CN2 on the board
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The orange wire labeled MOTOR1 on the board
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The igniter wire connector labeled CN1 on the board
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The yellow wire labeled ACIN1 Yellow on the board
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The white wire labeled ACIN2 White on the board
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The red wire labeled MOTOR2 Red on the board.
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Use a pair of pliers to depress the locking tabs on one of the corner retaining clips securing the PCB to the bracket.
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With the locking tabs depressed, pull the PCB away from the bracket to remove the corner.
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Repeat for the three remaining retaining clips.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
