I am working on a variable speed water pump drive. I was told the drive works until put under full load, then it trips out with "ground fault". A quick visual inspection shows bulging of all 4 main filter caps which are 470uf/400V. They are not leaking and not showing a short "yet".
Just curious if anyone has experience repairing these? Just not sure if replacing these caps should get this thing going or if the cap bulging is indication of something deeper? This unit just uses 1 bridge rectifier that tests good in circuit at this time. I am temped to replace and test but thought I might search for some experience on this one.
Just curious if anyone has experience repairing these? Just not sure if replacing these caps should get this thing going or if the cap bulging is indication of something deeper? This unit just uses 1 bridge rectifier that tests good in circuit at this time. I am temped to replace and test but thought I might search for some experience on this one.