Burnt Mains Cord Connector Found In Crompton Greaves Induction Cooker Model EIC2
This Induction Cooker (hereinafter called as IC) was brought by my son from Bangalore, who came down for a couple of days’ visit on an urgent personal work this side. The complaint was that it was dead.
As usual, I opened and cleaned the boards and inside thoroughly and this process took almost an hour for me, as I loved and enjoyed doing this part of the service work. On inspection of the board, I found that the connector of the mains cord was charred due to loose contacts and arcing.
First I removed the burnt connector and the other one too and cleaned the board thoroughly. Used a rivet to hold the peeled off track to the board. Then cut the two wires and cleaned the end and tinned it and kept it ready. Then checked for any shorted components or other defects on the board.
Did not find any. ESRs of caps were ok. So, retouched the whole board with fresh solder and cleaned it thoroughly. The temperature sensor unit on the coil was found worn out and torn.
So, replaced that also. Then connected the mains wires and fixed the board on the bottom cover, followed by the fan (I had lubricated it too), the coil and the front panel. Applied power and found the unit getting on with a beep, which was a healthy sign.
After just keeping the top cover, kept a vessel with little water for testing and applied power. I was glad to see that the IC worked very well. So, fixed the bottom screws and gave it to my son. Satisfaction, of-course gladly jumped into the collection bag!
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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Waleed Rishmawi
December 17, 2022 at 1:35 pm
great work my friend. induction cookers is your specialty and I can tell you enjoy working on such devices. keep up the good work and have a blessed day
Parasuraman S
December 17, 2022 at 4:32 pm
Many thanks for your comments!
Albert van Bemmelen
December 17, 2022 at 3:40 pm
I wondered with what you are able to successfully lubricate the fan, since I know from my bad experience that most stuck fans are no longer fixable. Replacing them is mostly the only remedy. Also because it is hard to lubricate the inside fan's stuck shaft.
Yogesh Panchal
December 17, 2022 at 4:26 pm
Albert,
Use WD40 on stuck shaft then keep it side for at least 1 to 2Hrs & then try.
Albert van Bemmelen
December 18, 2022 at 12:56 am
Tried that recently Yogesh with a 12V SMPS 14x14cm fan. No luck. Besides WD40 is known for degrading plastic in time! Even the residu that is left apparently does.
Yogesh Panchal
December 17, 2022 at 4:26 pm
Good Job! Sir
Parasuraman S
December 21, 2022 at 8:57 am
Many thanks!
Parasuraman S
December 17, 2022 at 4:36 pm
The label can be peeled off to reveal the sealing cap. Then we can use WD40 or any other lubricant. The fans get stuck due to hardened grease and become loose once we do this. I have repaired many SMPS fans this way and it has proved to work very well for a long time. Many thanks for your comments!
Albert van Bemmelen
December 18, 2022 at 12:58 am
Recently used WD40 on a stuck smps 14x14cm fan. No luck. Also peeling off the top sticker didn't help because it was completely closed.
Parasuraman S
December 21, 2022 at 8:58 am
Could be a fan with fully molded case!
Imoudu.O
December 17, 2022 at 8:56 pm
Thanks for sharing,hoping to fix one in future.
Parasuraman S
December 18, 2022 at 1:50 pm
Many thanks!
Henrique J. G. Ulbrich
December 18, 2022 at 8:53 pm
Really, the WD-40 is a practical and efficient product for many tasks. The problem is that WD-40 IS NOT A LUBRICANT. It is useful for loosening stuck parts, as in this article. With the parts free, one can conclude that the set is lubricated. DEFINITELY NOT. Please check the words in the can and you will realize that IN NO PART THE MANUFACTURER SAYS IT IS A LUBRICANT. As a matter of fact, it makes just a cleaning and removal of water, residues and dirt. By the way, the WD in the brand means WATER DISPLACEMENT. The 40 means that the developer was successful on the 40th attempt.
So, the WD-40 continues to be very useful but must be complemented later with a lubricant product. If one uses only WD-40, the component (for example, a fan) will work initially well, but in a few time the lack of lubrication will render it worn.
Parasuraman S
December 19, 2022 at 5:54 pm
Many thanks for the valuable input! I shall take care of it! Once the hardened grease loosens and the fan runs smoothly, it will continue to stay like that. This is my experience!