LG Refrigerator Not Cooling or Powering On? Main Control Board EBR88758501 – Fix Board Failure Fast

A failed main control board is one of the most common causes of a complete LG refrigerator shutdown — no cooling, no display, no response, or persistent error codes that won't clear. In most LG refrigerators, the main PCB assembly is the central brain that controls the compressor, fans, defrost cycle, ice maker, and display panel. When it fails, the refrigerator may go completely dead, run continuously without cooling, or display fault codes (Er FF, Er dH, Er rF) that cannot be resolved by resetting. ⚡ Common failure point in LG French door and side-by-side refrigerators — often triggered by power surges or capacitor failure. Part EBR88758501 is the genuine OEM replacement main PCB assembly that restores full refrigerator control and normal operation.

❓ Is This the Right Part?

This is the correct fix if ALL of the following are true:

• ✔ Refrigerator has power at the outlet but does not respond or display anything
• ✔ Error codes persist after unplugging for 5+ minutes and restarting
• ✔ Compressor, fans, and defrost heater have been tested and are not the root cause
• ✔ ONLY problem is the refrigerator is dead, unresponsive, or stuck in a fault state

Not sure? Send us your model number — we'll confirm before you order.

🔧 Common Symptoms

• Refrigerator completely dead — no lights, no display, no cooling
• Persistent error codes (Er FF, Er dH, Er rF, Er CO) that won't clear on reset
• Compressor does not start despite fans running
• Ice maker and water dispenser stopped working simultaneously with cooling loss

✔ If these symptoms match, this is the most likely failed component in the control system.

✔ In most cases, replacing this main control board restores full refrigerator operation immediately.

📦 Part Details

• Part Number: EBR88758501
• Type: OEM Main PCB Assembly — primary control board for LG refrigerators
• Replaces: EBR88758501 (OEM direct)
• Brands: LG

⚙️ Installation

Skill Level: ADVANCED — 30–60 minutes. Disconnect power before servicing. The main PCB is typically located at the rear of the refrigerator behind an access panel. Photograph all wire harness connections before disconnecting, transfer connectors one at a time to the new board, and secure the board in the mounting bracket. Restore power and verify all functions before closing the access panel.

✓ Compatible Models

Confirmed compatible with select LG French door and side-by-side refrigerator models. Contact us to verify your model number before ordering.

💡 Pro Tip