crwdns2936637:0crwdne2936637:0 crwdns2853008:0crwdne2853008:0 crwdns2861143:0crwdne2861143:0

Table lamps are designed to sit on tables. They are not floor lamps, which sit on the floor. Table lamps are usually shorter than floor lamps.

crwdns2934591:06crwdne2934591:0 crwdns2934593:0crwdne2934593:0

crwdns2933897:0crwdne2933897:0

Bedside LED Lamp turns on and then off in a blink

Hello everyone.

Here is my bedside lamp which has some problems, when I turn it on, it turns on just for a moment and then goes off. Which component in its circuit is probably causing this? Is it one of those 3 LEDs or that capacitor or one of those resistors?

Block Image

Block Image

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0
crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0

crwdns2933313:01crwdne2933313:0

crwdns2934221:0crwdne2934221:0
crwdns2931211:0crwdne2931211:0 crwdns2931215:0crwdne2931215:0 crwdns2934225:0crwdne2934225:0
crwdns2934057:0crwdne2934057:0

crwdns2933897:0crwdne2933897:0

Wow , the soldering looks bad.

Did you did anything?

Do you have a multimeter?

If so, since it has minimal components, you can actually test quick,

test the LED

Test the resistance of the resistor.

Looking at the LED, i doubt it is bad, it seems that there are bad solder in place.

Block Image

I would suggest you to resolder those cold / bad solder joints first.

crwdns2934105:0crwdne2934105:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0
crwdns2889612:0crwdne2889612:0 1
crwdns2934285:0crwdne2934285:0

crwdns2934229:0crwdne2934229:0

Erfan Monemi crwdns2934231:0crwdne2934231:0
crwdns2936625:0crwdne2936625:0:

crwdns2936751:024crwdne2936751:0 0

crwdns2936753:07crwdne2936753:0 0

crwdns2936753:030crwdne2936753:0 4

crwdns2942667:0crwdne2942667:0 204