Marantec 122944 Transformer Box for Synergy Solo 120791 Operators
The Marantec 122944 transformer box is the Synergy Solo power transformer service part used to provide the correct low-voltage supply for the opener electronics. A failed transformer box can leave the opener dead, weak, intermittent, or unable to power the control circuits even when the household outlet is working. It is a power component, not a logic board, remote receiver, or accessory module.
Fitment should be checked by the original transformer label because Marantec uses several transformer box part numbers across its opener families. The 122944 is commonly associated with Synergy Solo 120791, while 105470 is used with select Synergy 370/380 applications and 122945 is tied to Synergy 360 in some parts listings. Some public listings for 122944 include conflicting Synergy 280 wording, so the safest approach is to verify the original part number and model before ordering.
Compatible With
- Marantec Synergy Solo garage door operators when the parts diagram lists 122944
- Marantec Synergy Solo 120791 operators using the matching transformer box
- Select Synergy Solo low-voltage power repairs where the original transformer label matches 122944
- Residential Marantec opener heads with the correct Synergy Solo transformer configuration
- Not intended for Synergy 260, 270, 280, 360, 370, 380, M-Line, Q-Line, or EOS models unless documentation confirms 122944
Features and Specifications
| Manufacturer | Marantec |
|---|
| Product Type | Transformer box / low-voltage power assembly |
|---|
| Part Number | 122944 |
|---|
| Application | Power transformer for Synergy Solo operator electronics |
|---|
| Compatible Operator Type | Residential Marantec garage door opener |
|---|
| Common Model | Synergy Solo 120791 |
|---|
| Related Control Part | 122943 Synergy Solo control box |
|---|
| Installation Notes | Requires safe power disconnection and internal operator service |
|---|
| Notes | Verify original transformer label because public listings may mix model wording |
|---|
Also Known As / Related Part Numbers
- 122944
- MAR-122944
- Marantec 122944
- 122944 transformer box
- Synergy Solo transformer box
- Synergy Solo 120791 transformer
- Related but different: 122943 control box, 122942 Synergy Solo lens, 105470 Synergy 370/380 transformer, 122945 Synergy 360 transformer
Technician Note
If the opener has no display or response, confirm outlet power and inspect the cord before replacing the transformer. Also check for shorts in low-voltage circuits that could damage a new transformer.
Before Ordering Checklist
- Confirm the opener is Synergy Solo or Synergy Solo 120791
- Match the original transformer label to 122944
- Do not rely only on public listing text if it mentions another model family
- Inspect the control box, cord, and wiring for related damage
- Use proper electrical safety procedures before opening the operator head
Professional Advisory
This part involves internal power wiring. Do not work on live wiring, bypass protection devices, or substitute a transformer with a different rating. Use a qualified technician for diagnosis and installation.
Important Ordering Warnings
- Some supplier references show conflicting Synergy Solo and Synergy 280 wording for 122944. Verify the original transformer label before upload or ordering.
- 122944 is the transformer box, not the 122943 control box.
Product Questions and Answers
What does the Marantec 122944 transformer box do?
It supplies the low-voltage power used by the Synergy Solo opener control electronics and related circuits.
Which opener is 122944 commonly used with?
It is commonly associated with the Marantec Synergy Solo, especially Synergy Solo model 120791.
Is 122944 the same as 122943?
No. 122944 is the transformer box. 122943 is the Synergy Solo control box.
Why should I check the original label before ordering?
Marantec has several transformer box part numbers with different applications, and some public listings mix model wording. The original label is the safest fitment check.
Can this transformer be installed by a homeowner?
Because it involves internal power wiring, installation should be handled by a qualified garage door technician or electrical professional.
