A Treadmill With Shorted Board Repaired and Maintained
A customer brought a treadmill board for repair and told me that the device display showed an E2 error. From experience that is either a bad motor or bad shorted board but most likely a shorted part on that board.
I had to go to his house and take the board off but I was not allowed to take a photo of the machine there.
I brought the board to the shop and took the board of the heat sink for testing and as expected the IGPT was shorted and needed a replacement.
I asked the customer to take the main motor that runs on 180 DC volts to a specialized technician for check up.
The customer called later on that the motor was defective and needed a replacement and that would be a lot cheaper than fixing it.
I de soldered the IGBT (40N60PFD) out of board and replaced it with another one; not the same exact part number but it has the same specs.
Before replacing the part, a cleaned the area from the old dried thermal paste and added fresh one then soldered the part on board attaching to the heat sink with a long screw.
I powered the machine on in my shop and I was able to see 180 DC volts at the output terminals of the board (motor voltage inputs) but that was not the ultimate test because I had to take the board to the customer’s house and install the board making sure that all is well.
The machine worked according to specs and the customer was happy and that happiness was displayed in a generous pay for the work done to revive this machine.
Mission Accomplished.
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 Damaged USB Port Replaced On An Expensive Musical Keyboard
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Parasuraman S
November 23, 2024 at 4:35 pm
Vow! Doubly rewarded for a dutifully done job! Thanks for sharing, dear friend!
Waleed Rishmawi
November 23, 2024 at 5:18 pm
Parasuraman: indeed, I just love with the customer is happy with the repair. have a blessed day
Albert van Bemmelen
November 23, 2024 at 5:03 pm
Fixing threadmills has become an industry on its own. And that is probably why it is still very hard to find service manuals or other info for these machines. So good job indeed!
Waleed Rishmawi
November 23, 2024 at 5:19 pm
Albert: a lot of boards come to my shop for repair but I do not like about it is going to the customer's house to take it apart which is time consuming but it is rewarding. have a blessed day
Tito Kanshulu
November 23, 2024 at 7:21 pm
Job well done Waleed
Waleed Rishmawi
November 25, 2024 at 3:17 pm
Tito: thanks man. have a blessed day
Tayo
November 23, 2024 at 9:02 pm
Well done Waleed.
You mentioned you expected the IGBT to be shorted.... why is that? Is this the most common issue with treadmill mainboards?
Waleed Rishmawi
November 25, 2024 at 3:20 pm
Tayo: thanks man. sometimes the motor go bad and when it goes bad the IGBT goes bad with it so it is better to check the motor and the IGBT then install it back to be on the safe side. yes the IGBT goes bad very often. have a blessed day
Mark J
November 24, 2024 at 4:01 am
Waleed great job on the repair.
Waleed Rishmawi
November 25, 2024 at 3:20 pm
Mark: thanks man. have a blessed day
Yogesh Panchal
November 25, 2024 at 5:00 pm
Good Job! Waleed
Waleed Rishmawi
November 27, 2024 at 4:36 pm
Yogesh: thanks man. have a blessed day