Genuine LiftMaster K1D7078 EMI board — the AC input filter board fitted to all four of LiftMaster’s heavy-duty and industrial DC operators: the HDSW24UL, HDSL24UL, IHSL24UL and INSL24UL. It sits between the incoming mains and the transformer. It is not a control board; it does no logic.
Board or complete assembly? This listing is the bare board. The K41-0078-000 is the EMI board with its cover and mounting kit for the HD operators. If the housing or cover is damaged, order the assembly.
Specifications
| Part number | K1D7078 |
|---|---|
| LiftMaster description | EMI Board |
| Fits | HDSW24UL, HDSL24UL, IHSL24UL, INSL24UL |
| Condition | Genuine LiftMaster OEM, new |
The boards in the HD and industrial family
LiftMaster’s four heavy-duty DC operators share most of their electronics. The table below is taken from the repair-parts pages of the HDSW24UL, HDSL24UL and IHSL24UL/INSL24UL manuals; the part you are on is in bold.
| Operator | Control board | Power board | Motor drive | Relay adapter | Expansion | EMI board | Rectifier |
|---|---|---|---|---|---|---|---|
| HDSW24UL swing | K41-0073-000MC (board printed K41-0094-000) | K41-0071-000 | K41-0095-000 | K41-0072-000 | K1D8387-1CC | K1D7078 | K41-0083-000 |
| HDSL24UL slide | K41-0073-000MC | K41-0071-000 | K41-0095-000 | K41-0072-000 | K1D8387-1CC | K1D7078 | K41-0083-000 |
| IHSL24UL industrial slide | K41-0073-000MC | combined, below | K41-0245-000 (power + motor drive) | K41-0072-000 | K1D8387-1CC | K1D7078 | K41-0083-000 |
| INSL24UL industrial slide | K41-0073-000MC | combined, below | K41-0244-000 (power + motor drive) | K41-0072-000 | K1D8387-1CC | K1D7078 | K41-0083-000 |
Dead operator — what to check, in order
| Check | Part |
|---|---|
| Mains at the operator terminals | Breaker and site wiring — nothing to buy yet |
| AC through the EMI board | This board, K1D7078 |
| Transformer output | K41-0067-000 (HDSW24UL, HDSL24UL), K41-0241-000 (IHSL24UL), K41-0346-000 (INSL24UL) |
| DC after the rectifier | K41-0083-000 bridge rectifier |
| Power stage | K41-0071-000 HD power board, or the K41-0245-000 / K41-0244-000 BLDC board on the industrials |
| Main board | K41-0073-000MC — all four operators |
Fit surge protection at the same time. Storm damage is a leading cause of gate operator board failure. If this board died after a storm, the replacement is at the same risk unless the installation is protected.
Related
HDSW24UL parts · HDSL24UL parts · IHSL24UL parts · INSL24UL parts · safety equipment, sensors & loops
Not sure which board you need? Send a photo of your existing board to parts@gatehousesupplies.com or call 866-965-5599. We install and service these operators and would rather confirm it than have you fit the wrong board. Since 1993.
