Just replacing some damaged caps in an Audiolab 8200CDQ. This is the second time this has been done as I have power supply issues where I live. The first recap was done by an IAG certified tech. When I unsoldered the caps I noticed to of the pads on the underside of the board are missing. They are intact on the surface. Can I still solder to these? Just use more solder so it runs through the bottom to the surface pads? What’re your thoughts?
Attachments
Last edited:
Don't know. Try this -
https://www.instructables.com/id/Repairing-Plated-Throughholes-and-Vias-on-a-PCB/
https://www.instructables.com/id/Repairing-Plated-Throughholes-and-Vias-on-a-PCB/
I got it. Still had good contacts on the top of the board; continuity was good. I just started the cap up about 1/2” off the board, lots of flux in the hole then put a nice spot of solder and quickly slid the cap down and flush. From the underside I could see a nice clean plug of solder through the eyelet. I then soldered the underside just to be sure. All back together... works and sounds great.
If I replace them again
If I need to do the caps again I’ll just use the excess leads on the caps to jump the traces. I did a continuity test to see which way the circuit ran so going old school with wires would have been my next move if I couldn’t make a clean connection. Hopefully I won’t ever have to do this again! I have an APC audio UPS now. Thanks for your comment. 🙂
If I need to do the caps again I’ll just use the excess leads on the caps to jump the traces. I did a continuity test to see which way the circuit ran so going old school with wires would have been my next move if I couldn’t make a clean connection. Hopefully I won’t ever have to do this again! I have an APC audio UPS now. Thanks for your comment. 🙂
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.