No Power In Chair Massager Repaired
A lady brought me lots of stuff to repair and one of these was a chair massager that does not power up. She explained that smoke was coming out of the controller and then the massager went dead.
It is a leather seat massager and the quality of the leather and the making is just amazing.
Since the customer informed me of smoke coming out of the controller,
I headed directly there and opened up the device.
My new helper (my son) took the screws and the cover off; right away I could smell a bad burn (also confirmed by my helper, LOL). If you look to the left side of the photo you will be able to see the cause of the smell.
There is a bulging part on the top of that IC and it has to be replaced; Part number: ULN2003AN.
As I flipped the board to desolder the IC for replacement I noticed the solder bridge between the two wires which confirm the damage seen on that IC. Right away, I fixed that solder bridge and continued with the installment of the IC.
The damage was extended to the bottom of the IC as well. I have plenty of the same exact part in the shop for this IC is used a lot in treadmills.
Once the IC was replaced and everything was put together thanks to my helper, I powered up the machine and as seen in the photo, the machine was up and running.
My helper is trying out the massager and seems like he was ok with it because he wanted to sit on that chair for a long time.
This article was prepared for you by Waleed Rishmawi, one of our ‘Master Authors’ and currently working in the Bethlehem area of Palestine repairing electrical and electronic equipment.
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Note: You can check his previous article on How To Repair A Remote Control Car