Liftmaster 041A5351-5, POWER SUPPLY W/HEAT SINK MERIK
The LiftMaster 041A5351-5 is a power supply board with heat sink used in select Merik residential DC belt drive garage door opener systems. Its job is to convert incoming power into the low-voltage output needed by the opener electronics, motor-control section, and related internal circuits. When this board weakens, the opener may appear dead, reset during operation, run intermittently, or show unreliable indicator lights even when incoming power is present. The heat sink version is application-specific and should be matched against the original board because other 041A5351 family power supplies can look close but may not be built for the same Merik configuration.
Common replacement reasons include a visibly heat-damaged board, intermittent opener power, no response from the head unit, random resets, or power supply failure after a surge. These symptoms can also be caused by wiring, logic board, motor, or outlet problems, so the part number on the original board matters.
Compatible With
- Select Merik residential DC belt drive garage door openers using the 041A5351-5 power supply with heat sink
- Various LiftMaster residential DC garage door opener applications only when the parts diagram calls for 041A5351-5
- Not a universal replacement for 041A5351-6, 041B5351-7, or other 41A5351 family power supplies
- Verify original board number, heat sink layout, connector style, and mounting before ordering
Features & Specifications
| Manufacturer | LiftMaster |
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| Product Type | Power supply board with heat sink |
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| Part Number | 041A5351-5 |
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| Application | Merik residential DC belt drive garage door opener power supply service |
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| Compatible Operator Type | Select residential DC belt drive garage door openers |
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| Included Components | Power supply board with heat sink, as supplied by manufacturer |
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| Notes | Match to original board and parts diagram before installation |
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Also Known As / Related Part Numbers
Technician Note
Do not choose this board only because the opener is a DC belt drive unit. The heat sink version, mounting bracket, and connector layout should match the original power supply. A failed power supply can be caused by surge damage or a downstream short, so inspect wiring and the logic board before replacing parts.
Before Ordering Checklist
- Confirm the original part number is 041A5351-5 or a supported 41A5351-5 reference
- Confirm the opener is a Merik residential DC belt drive model that uses the heat-sink power supply
- Compare board shape, heat sink, mounting points, and plug locations
- Inspect for water intrusion, heat damage, insect damage, or surge damage in the opener head
- Do not substitute a similar 041A5351 power supply unless the manual confirms it
Professional Advisory
Disconnect power before servicing an opener. If the repair involves line voltage, capacitor testing, board replacement, or uncertain wiring, use a qualified garage door technician.
Product Questions and Answers
What does the heat sink do on the 041A5351-5 power supply?
The heat sink helps move heat away from the electronic components on the power supply board. That is important on DC opener applications where the board can run warm during normal cycling.
Is 041A5351-5 the same as 041A5351-6?
No. They are related power supply numbers, but they are not automatically interchangeable. The 041A5351-5 version is commonly associated with Merik DC belt drive use and includes the heat sink style referenced for that application.
What symptoms can point to a bad power supply board?
Possible symptoms include no power at the opener head, intermittent operation, random resets, dim or dead indicator lights, or visible board damage. These symptoms should be checked against wiring, outlet, logic board, and motor conditions before replacing the part.
Can this board be used on a standard LiftMaster belt drive opener?
Only if the opener parts diagram calls for 041A5351-5. Many LiftMaster belt drive openers use different power supply boards even when the opener looks similar from the outside.
Should a technician install this part?
A qualified garage door technician is recommended if line-voltage wiring, board damage, surge damage, or uncertain diagnosis is involved.
