LG Studio Control Board Memory / Power Supply Issue

Oven clock and settings reset every time power is cycled or briefly interrupted.

Advertisements

Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Advertisements

Possible Causes

Weak internal backup capacitor, failing main PCB, unstable household power, loose neutral connection

How to Fix / Troubleshooting

Safety first: If you suspect wiring issues, turn off power at the breaker and consult an electrician.

  • Check for frequent outages: If your home experiences frequent brief outages, consider a whole-house surge protector or UPS for sensitive electronics.
  • Inspect terminal block: Ensure all connections are tight and not overheating.
  • If only the oven loses settings: The main PCB's memory backup circuit may be failing; replace the main PCB.

Note: This issue is inconvenient but not usually dangerous; however, it can precede full control failure.

Advertisements

Repair Difficulty

Medium 3/5

Required Part

Main Control Board (PCB)
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements