Open Coil Found In Solar Gate Lamps
These two solar gate lamps were brought to me by one of my childhood friends, who is a professional electrician-cum-plumber. The complaint was that both were not lighting up. When I opened it, I saw a lot of rust formation in battery contacts. I cleaned the inside and outside as thoroughly as possible.
Cleaned the battery contacts with IPA. When I powered one of the lamps up, it did not work. So checked the coil that looked like a resistor and found it to be opened. Replaced it with a similar one from my junk collections. That lamp worked very well. In the other only the wire was broken due to corrosion, which I cleaned and resoldered. It worked well too.
My friend was more than happy that he could get the lamps in working condition, as these were lying in his attic for many years and when he wanted to install it, he found it to be defective! Anyhow smile is infectious and it got transferred to me too! Here are a few pictures for curious minds:
From the above picture you would have noticed a button IC (glued to the PCB), which is the only other main semiconductor in this circuit handling the charging and switching on the light when the sun light goes off. No number and identity!
Mission accomplished and the double satisfaction jumped into its collection bag as usual.
This article was prepared for you by Parasuraman Subramanian from India. He is 70 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 repair article below: