The led bulb loaded on the adjustable light lamp is broken
LED lights it is transistor luminescence is not pure resistance filament bulbs, when dimming voltage changing, the frequency is changing so affect rectifier, sudden high voltage will burn out the LED.
If don't use without support, mount or will be relatively easy to burn out.
Estimate the dimmer lamp does not support adjust the use of leds, please check the desk lamp for light source, and then determine whether or not suitable