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12-18-2018, 01:38 PM
I'd done a number of cap jobs on these in last few years. They can be done successfully but they are tricky to work on.
Kevin's point about: " Note that the removal of a component from the board should be done in a manner that saves the board rather than the component". Is a really good one as is the advise about how to remove the parts. I learned the hard way!
When do these I clip the leads the axial cap both beneath the board and close to the cap before trying to remove them. You want to only be pulling out short straight piece of wire or you'll damage the pads. It's very delicate board.
My other recommendation is to pay special attention to the 470 ohm 5W resistors in the power supply for the relays. They often need replacement or at the least to have the solder joints touched up. I've seen lots of these where they fail.
Good Luck!
Kevin's point about: " Note that the removal of a component from the board should be done in a manner that saves the board rather than the component". Is a really good one as is the advise about how to remove the parts. I learned the hard way!
When do these I clip the leads the axial cap both beneath the board and close to the cap before trying to remove them. You want to only be pulling out short straight piece of wire or you'll damage the pads. It's very delicate board.
My other recommendation is to pay special attention to the 470 ohm 5W resistors in the power supply for the relays. They often need replacement or at the least to have the solder joints touched up. I've seen lots of these where they fail.
Good Luck!
