Amusing Self-Service Of OSRAM LED Bulb Model R18NBB
One day, when I was doing some work in my kitchen very early in the morning, the LED Bulb conked off. As I had another, I carried on, deciding to have a look at it later. It is always amusing when we get a chance to look into something which we seldom get. I used a ladder, climbed up and removed the bulb and cleaned it thoroughly, as it had collected oily dirt.
Then I opened the dome prying it on all sides, repeatedly spraying IPA to release the glue. Then de-soldered the round shaped LED strip. The LEDs were checked using my LED checker and found to be ok.
Again pried open the round metal housing from its base, to remove the LED driver unit. Then de-soldered the AC in wires from the top of the bulb. The capacitors were found burst, but luckily the dislodged plastic cover of the caps were lying inside, from which I could make out the values. I used a 100/160V cap, the size of which was longer. But I managed to keep it straight so that it would fit inside the top of the bulb, where AC goes in. Here, you can have a look at:
Inserted the board back and soldered the AC inlets from the top, which make contact with the socket when we insert the bulb. Then placed the metal housing like how it was, and soldered the LED strip back and closed the light dispenser dome on top.
It gets locked when we turn it in. I never bothered to apply any glue. I fit this in my table lamp and was glad to see the bulb glowing like how it was.
Then did another climbing to put it back in the kitchen. You can see it glowing which might bring a glow of happiness in at-least a few readers!
Mission accomplished with satisfaction getting added, along with applause from my wife for my quick action! (Well, ladies give us such pleasant surprises sometimes!) (LOL)
This article was prepared for you by Parasuraman Subramanian from India. He is 72 years old and has more than 30 years’ experience in handling antique equipment like Valve Radio, Amps, Reel Tape Recorders and currently studying latest tech-classes conducted by Kerala State Electronics Technicians’ Association. He has done graduation in BBA degree, private diploma in Radio Engineering and retired as MD of a USA company. Presently working as Consultant to Hospital and other institutions.
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You may check on his previous article on Defect In 1117-3.3V IC Drove HAIER LED TV Model LE22B600 To Intermittent Standby