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Mi-T-M Heater MH-0190-0M10 Main PCB Assembly Replacement

Introduction

Follow this guide to replace the main PCB assembly on a Mi-T-M heater model MH-0190-0M10.

What you need

  1. Mi-T-M Heater MH-0190-0M10 Main PCB Assembly Replacement, Safety precautions: step 1, image 1 of 2 Mi-T-M Heater MH-0190-0M10 Main PCB Assembly Replacement, Safety precautions: step 1, image 2 of 2

    • Power off the machine at least one hour prior to starting repairs. Ensure the machine is completely cool to the touch.

    • Flip the power switch into the OFF position.

    • Unplug any extension cords from the included power cord.

    Edit

  2. Mi-T-M Heater MH-0190-0M10 Main PCB Assembly Replacement, Remove the right-side cover: step 2, image 1 of 1

    • Use a 5/16 inch socket or Phillips screwdriver to remove the four bolts securing the right-side cover.

    Edit

  4. Mi-T-M Heater MH-0190-0M10 Main PCB Assembly Replacement: step 3, image 1 of 3 Mi-T-M Heater MH-0190-0M10 Main PCB Assembly Replacement: step 3, image 2 of 3 Mi-T-M Heater MH-0190-0M10 Main PCB Assembly Replacement: step 3, image 3 of 3

    • Tilt the right-side cover down to access the PCB board.

    • Do not fully remove the right-side cover, it is still attached via the on/off switch.

    • During reassembly, ensure the display window is aligned with the LCD display.

    Edit

  5. Mi-T-M Heater MH-0190-0M10 Main PCB Assembly Replacement, Disconnect all wires from the PCB: step 4, image 1 of 3 Mi-T-M Heater MH-0190-0M10 Main PCB Assembly Replacement, Disconnect all wires from the PCB: step 4, image 2 of 3 Mi-T-M Heater MH-0190-0M10 Main PCB Assembly Replacement, Disconnect all wires from the PCB: step 4, image 3 of 3

    • Disconnect all wires from the main PCB assembly:

    • The photocell wire connector labeled CN3 on the board

    • The white wire connector labeled CN2 on the board

    • The orange wire labeled MOTOR1 on the board

    • The igniter wire connector labeled CN1 on the board

    • The yellow wire labeled ACIN1 Yellow on the board

    • The white wire labeled ACIN2 White on the board

    • The red wire labeled MOTOR2 Red on the board.

    Edit

  6. Mi-T-M Heater MH-0190-0M10 Main PCB Assembly Replacement, Remove the main PCB assembly: step 5, image 1 of 3 Mi-T-M Heater MH-0190-0M10 Main PCB Assembly Replacement, Remove the main PCB assembly: step 5, image 2 of 3 Mi-T-M Heater MH-0190-0M10 Main PCB Assembly Replacement, Remove the main PCB assembly: step 5, image 3 of 3

    • Use a pair of pliers to depress the locking tabs on one of the corner retaining clips securing the PCB to the bracket.

    • With the locking tabs depressed, pull the PCB away from the bracket to remove the corner.

    • Repeat for the three remaining retaining clips.

    Edit

  7. Mi-T-M Heater MH-0190-0M10 Main PCB Assembly Replacement: step 6, image 1 of 2 Mi-T-M Heater MH-0190-0M10 Main PCB Assembly Replacement: step 6, image 2 of 2

    • Remove the main PCB assembly.

    Edit
Conclusion

To reassemble your device, follow these instructions in reverse order.

Author

Sam Omiotek

Member since: 02/25/19

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