Interestingly, LG hasn’t updated their Microwave ovens with significant changes. Still, the newer version uses the same touch buttons with a PCB LCD time screen.
Unfortunately, unlike the old models, which were very robust and long-lasting, the new models use parts that are flaky, unreliable, and prone to problems. LG microwave display flickering is the most complained one.
Here are the reasons why your LG Microwave’s display may be flickering,
- Loose Elastomeric connector (PCB plastic strip)
- Worn printed circuit lining.
- Damaged LCD Display or loose connection to the board
- Shortcircuiting due to water or humidity
- Lose Power supply Cable (Rarely)
Now that we know what may cause the LG microwave display to flicker let’s fix them.
It is essential to know that repairing your LG Microwave screen flicker might not be easy unless you have experience repairing electronics. Moreover, it needs proper tools and can be an electrical hazard. Therefore, taking your microwave oven to an expert repairman might be a good option. Moreover, if your microwave comes with a warranty, go for it.
Fix 1: Securing Loose Elastomeric connector
Elastomeric connectors consist of alternating conductive and insulating regions and other uses used to connect thin and fragile glass LCDs)to circuit boards in electronic devices.
A loose elastomeric connector might be causing your LG Microwave display to flicker. To fix this, all you need is to uncover the microwave, remove the PCB panel and appropriately reinstall the connector.
Sometimes cleaning the connector ends with alcohol helps clean any dirt causing a loose or bad connection.
Fix 2: Repairing worn printed circuit lining
Worn-out printed electric lining on a circuit board might cause a flicker. This is because the worn-out circuits cause inappropriate electricity transfer. The cause of worn out might be rust, water damage, or short-circuit burn.
To repair worn-out lining, you must first identify the track using a multimeter. Next, the repair can be carried out with a jumper wire, and your flickering problem will solve.
Fix 3: Replacing the Damaged LCD Display or securing a loose connection to the board
Sometimes a damaged LCD is the only cause of flicker. A broken LCD screen creates a flicker that is impossible to salvage. All you need to do is replace the broken LCD panel with a new one. You will easily find it in an electric component store.
If your LCD screen has a torn connector wire, this will also cause the LG Microwave display to flicker. All you need to do is solder it in place with a soldering iron.
Fix 4: Drying PCB
Ovens are not waterproof. Therefore, spilling water, coffee, or any drink over the Microwave oven might damage the circuit board or electronics inside. Moreover, liquid oven cleaners, when used recklessly, also cause damage to internal components.
If you have spilled liquid over the oven, immediately unplug the microwave oven, mope the top dry with a piece of clothing and wait for a few hours to let the liquid dry.
If you have spilled a lot of liquid, remove the oven cover and dry it with a hair dryer before turning it on.
Fix 5: Securing Power Supply
A loose or damaged power cable or a switchboard may be the only cause of flickering. The power cable must be connected securely and should be undamaged.
Moreover, the switchboard should also be well-fitted, and the plug should adequately stay in place. If the plug is loosely fitted, it will cause your oven to start over and again, causing your display to flicker.
You can solve the problem by either changing the switchboard or the power plug or using an extension to solve the problem.