the touch controls on my lg range sometimes don't respond or go crazy, tapping random things.

Diagnosis

The erratic behavior of the LG LREL6323S touch controls—characterized by "ghost touches" or complete unresponsiveness—is typically caused by a failure in the capacitive sensing layer of the User Interface (UI) board. Because this model utilizes a capacitive touch system, it relies on the electrical properties of your finger to trigger a command. When a thin film of conductive grease, crystallized sugar from boil-overs, or accumulated steam settles on the glass, it creates a bridge of conductivity that the sensor interprets as a finger press, leading to the "crazy" random inputs.

In more severe cases, this is caused by internal moisture infiltration or a failing ribbon cable connection between the main power board and the display panel. If you notice the issue worsens specifically when the rear burners are on high or when the oven is steaming, it confirms that humidity is penetrating the bezel and causing short-circuits on the control board's surface. You can confirm this by checking if the panel stabilizes after the range has cooled completely and been wiped down with an isopropyl alcohol solution.

How to Fix It

To resolve these phantom inputs and reset the capacitive sensors, follow this precise sequence to perform a hard power cycle and deep clean:

1. Locate your home's electrical breaker panel and switch the double-pole breaker powering the range to the OFF position. Do not simply turn off the range at the buttons; the capacitors on the control board must fully discharge.
2. Wait exactly 5 full minutes. This clears the volatile memory (RAM) on the UI board and resets the touch calibration.
3. While the power is off, use a clean, lint-free microfiber cloth dampened with a mixture of 70% isopropyl alcohol and distilled water. Avoid using ammonia-based glass cleaners or abrasive scrubs, as these can strip the conductive coating on the glass.
4. Wipe the entire control panel in a circular motion, paying special attention to the edges of the glass where the bezel meets the chassis, as grease often accumulates in these crevices and "bleeds" onto the sensors.
5. Use a completely dry microfiber cloth to buff the surface until no streaks or moisture remain. Even a single droplet of water can trigger a ghost touch.
6. Restore power at the breaker and immediately test the buttons before heating any burners to ensure the baseline capacitance is calibrated.

If That Didn't Work

If the erratic behavior persists after a hard reset and deep clean, try these advanced solutions:

• Check for "Child Lock" Interference: Sometimes the Control Lock feature (activated by holding the Lock button for 3 seconds) can glitch. Toggle the lock on and off several times to ensure the software isn't stuck in a partial lock state that rejects certain inputs while allowing others.
• Inspect the UI Ribbon Cable: If you are comfortable removing the top cooktop, inspect the ribbon cable connecting the display to the main board. Ensure the cable is seated firmly in its socket and is not pinched or frayed. A loose connection often causes intermittent signal loss or random triggers.
• Verify Voltage Stability: Use a multimeter to ensure the range is receiving a steady 240V. Voltage sags or surges in the home's electrical system can cause the sensitive logic board of the LREL6323S to behave erratically.
• Replace the User Interface Board: If the ghost touches continue, the capacitive layer has likely suffered a permanent hardware failure. You will need to replace the UI board (the glass and electronics assembly). This involves removing the upper console housing and disconnecting the wiring harnesses to install the new panel.

Heads Up

• Never spray cleaning agents directly onto the touch panel; the liquid can seep behind the glass bezel and permanently corrode the circuit board. Always spray the cloth first.
• Avoid placing heavy magnets or high-powered wireless devices directly on the control panel, as electromagnetic interference can disrupt the capacitive sensors.
• If you use a protective screen cover or a third-party "guard" over the buttons, remove it immediately; these often trap moisture and heat, which accelerate the failure of the touch board.
• Regularly wipe down the control area after every use to prevent grease buildup from becoming a permanent conductive layer.