What is this resistor value?

Thread Starter

drjackool

Joined May 23, 2021
6
Hi
My rechargeable lamp is damaged and when open it I see one of the resistor is fully burned but I cannot replace it because I cannot determine it value?
I placed a several random resistors but not work.

Blue wires are AC 220V input.
Red & Black are connected to batteries.
White & Green are connected to LEDs.
Browne & Yellow are connected to DC 5V input.
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Thanks
 

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peterdeco

Joined Oct 8, 2019
415
One side of the led goes to 5VDC and the other through the resistor to the other 5VDC wire. It seems to me the only thing affected is the led. If the rest of the light does not work, it might have another problem. I would approximate the resistor being between 300 to 600 ohms, assuming the led voltage is about 2V and it is being supplied with 5 to 10mA.
 
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