A Dead Power Generator Control Board Repaired And Maintained
My cousin gave me a call and asked me if I can repair such board and I told him to bring it to my shop for check up. The next day, he showed up to my shop with that controller and I promised to take a look and call him back as soon as I have an answer about the repair.
My cousin is a manager of a Hotel located here in Bethlehem the Holy land. He has about five boards like that that are dead and needed repair.
So If I was able to repair this one, I will check also the other ones. So let the repair begins.
These are the connections on the back of the device and as I understood from the customer, the only way to check if the device is up and running; by connecting it to the main generator.
I took the top of the controller and I was able to see the inside of it. I had to take one of the boards out to expose the lower side of it.
I de soldered the side board and so far it did not reveal any burnt parts or shorted components.
There is an IC that I could see behind the right side relay so I soldered that part to get to that IC because it looks blown but was not sure.
It is a power IC that had a hole in it. The customer explained that he connected the device wrong so he ended shorting it and what I saw just now confirms it. The part number of this IC is 34063 PWHJA.
Click here to view the datasheet
I already have that part in the shop and the only thing left to do is to solder it on board and hope for the best.
It was tiny but it was easy to solder it on board. I soldered the relay back on board as well and put the device back together and called the customer.
The customer was not in town, he was traveling abroad but when he was back in the country he came to my shop, took the device, and connected it to the generator at his hotel. He gave me a call later on that day that all is well and he is happy with the outcome.
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 Another F61 Issue On A Panasonic Sound System Repaired
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Mark
January 28, 2023 at 2:31 pm
Well done Waleed,
Looks like you have more work to do with the other control boards. Maybe a common fault?
Waleed Rishmawi
January 28, 2023 at 6:33 pm
Mark: not a common fault but the customer connected the main power sourch to the wrong terminal causing a short in the power IC. have a blessed day
D p samaràsuriya
January 28, 2023 at 3:08 pm
Hi have nice day I have to same
Control unit but I don't have
Circuit diagram for this unit
If you have circuit diagram
If you can
Mail me
Thanks
Pradeep
Waleed Rishmawi
January 28, 2023 at 6:35 pm
D P samarauriya: I do not have it eirther and I checked on line I could not find it either, i only could find connections explanation but not the power schematics. sorry. have a blessed day
Albert van Bemmelen
January 28, 2023 at 3:09 pm
Good job! Looks like you also are able to fix all other dead power control boards soon too.
Good article with 1.5A Buck boost DC-DC datasheet info. You shop inventory must be a very detailed up to date list.
Waleed Rishmawi
January 28, 2023 at 6:37 pm
Albert: thanks man. yes, I do what it takes to get the income going. Yes I try to keep the inventory active when it comes to what it is needed for repair in the shop. also other technicans ask me to buy parts for them so I know what is needed in my area and try to keep these parts in the shop as much as possible. have a blessed day
Parasuraman S
January 28, 2023 at 4:53 pm
You seem to have almost all odd parts required! Well done, dear friend!
Waleed Rishmawi
January 28, 2023 at 6:39 pm
Parasuraman: yes odd parts is what keeps me going in this kind of field. I mentioned the same thing to Albert about buying parts for technicians in my area and that gives me an idea what to order based on what needed to be repaired here. have a blessed day
Yogesh Panchal
February 5, 2023 at 6:19 pm
Good Job! Waleed
Mahmoud
March 2, 2023 at 5:48 pm
great job... waleed
well done , thanks for sharing your repairing steps by photos and speech