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Question:

Charging indicator has been on desk lamp, led lamp is not bright after rotary switch

Charging indicator has been on desk lamp, led lamp is not bright after rotary switch

Answer:

Hello, if you have a multimeter, please measure the lower limit of flow resistance, the lamp easy to burn current-limiting resistor, especially when charging turn on the light. Visual blue that resistance to fire.
After the first thing you should fill the electricity, using a multimeter to check the battery (black pieces) to have electricity, normal about 4 v, no electricity is the battery is bad, to replace the battery. If there is electricity, check the circuit board components have obvious damage, there is a circuit board is broken, no potentiometer (knob) could be broken. Can now be considered your element is broken, makes the led indicator light, hope to adopt!
The lamp plug is bright, have nothing to do with the back. Led not bright need to make sure this a few places, is there any battery, led to have bad, switch to have bad, line if there is any break in the middle. Best use multimeter measure.

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