Hello all,
This is my first posting here and I'm hoping somebody can help with re-occurring ballast failure problem. The ballast operates normally for 3 or 4 days and then fails, always in the same place. Only about 15% of our inventory seem to be effected which tends to make me think it's either a manufacturing or component issue.
I have absolutely no experience with electronics and my attempt at trying to draw a circuit diagram from the tracks on the PCB have failed (and given me a bad headache) and so I'm hoping if I post images of the PCB itself somebody may have an idea.
These ballasts are part of a super sized (200w) CFL which is purchased as a complete lamp from a manufacturer in China, unless I can prove to the manufacturer there is an issue I am likely to be disastrously out of pocket.
There are 3 images, one showing the top of the board and components, the second showing the tracks on the back of the board (this image has been horizontally flipped so that it matches the first image), the 3rd is a close up of the failed area showing a short which is hot enough to vaporise the solder track.
The point the failure happens is between what I think is an Inductor and a Bridge Rectifier.
Any helps you can offer would be very much appreciated.
Thanks
Mike
Image One:
Image Two:
Image Three:
Thanks for Looking.......
This is my first posting here and I'm hoping somebody can help with re-occurring ballast failure problem. The ballast operates normally for 3 or 4 days and then fails, always in the same place. Only about 15% of our inventory seem to be effected which tends to make me think it's either a manufacturing or component issue.
I have absolutely no experience with electronics and my attempt at trying to draw a circuit diagram from the tracks on the PCB have failed (and given me a bad headache) and so I'm hoping if I post images of the PCB itself somebody may have an idea.
These ballasts are part of a super sized (200w) CFL which is purchased as a complete lamp from a manufacturer in China, unless I can prove to the manufacturer there is an issue I am likely to be disastrously out of pocket.
There are 3 images, one showing the top of the board and components, the second showing the tracks on the back of the board (this image has been horizontally flipped so that it matches the first image), the 3rd is a close up of the failed area showing a short which is hot enough to vaporise the solder track.
The point the failure happens is between what I think is an Inductor and a Bridge Rectifier.
Any helps you can offer would be very much appreciated.
Thanks
Mike
Image One:
Image Two:
Image Three:
Thanks for Looking.......