If your dryer light is out, start with the simple stuff and work toward the electronics. The most likely cause is a bad light socket or a failed bulb, which you can check visually and verify with a multimeter to see if voltage reaches the socket. If the interior lamp and socket look fine, the next likely culprits are the control panel, touchpad, or user control and display board, especially when the problem affects indicator lights or the panel seems unresponsive — in other words when your dryer controls are not working. A faulty door switch can also stop power from reaching the lamp, so test it for continuity if the light only comes on with the door open. Less commonly the entire light assembly will need replacement due to damage or burn marks. If you need a replacement part, enter your model number on RepairClinic.com to find the exact part that fits your dryer and get step by step help for the repair.
01 - Dryer Light Socket
If the light itself is newly installed or shows no signs of damage, yet still won't work, it's possible the light socket is defective. You can use a multimeter to test whether or not voltage is reaching the light socket. If the meter shows that power is reaching the light socket then it's likely the socket is malfunctioning and will need to be replaced.
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The dryer control panel indicator lights are part of the control panel assembly and cannot be replaced separately. If an control panel indicator light is not working, the entire control panel assembly will need to be replaced.
The dryer control panel indicator lights are part of the touchpad and control panel and cannot be replaced separately. If an control panel indicator light is not working, the entire touchpad and control panel assembly will need to be replaced.
The dryer control panel indicator lights are part of the user control and display board and cannot be replaced separately. If an control panel indicator light is not working, the user control and display board will need to be replaced.
The dryer door switch will turn the interior light off when the door is closed and turn it back on when the door is opened. If the switch is defective, it may be unable to allow voltage to reach the light. You can use a multimeter to test the door switch for appropriate electrical continuity when actuated. If the switch doesn't provide appropriate continuity, it will need to be replaced.
The most likely cause of a dryer interior light not working is a defective light assembly. Inspect the assembly for any visible damage or burn marks and replace as required.
The most likely cause of a dryer interior light not working is a burned out light bulb. Inspect the bulb for a broken filament or burn marks inside the glass and replace the bulb as required.