I received this board from a co-worker to recap. The board had been in service for a couple of years, and one day, wouldn't POST. Calls to Tech Support ended up with him resetting the BIOS, which allowed it to boot for a few days, then the same thing again (no POST). Tech Support then "diagnosed" bad capacitors (over the phone, without seeing the board). This is an unusual board, with a Main and a Backup BIOS. Both are soldered directly onto the board, not socketed.
I've inspected the board, and there is no visible sign of bad capacitors. The board has a daughterboard with several VRMs and caps on it. Most of the large caps on the motherboard, and all on the daughterboard, are on the "good" list: Sanyo WG, Chemi-con KZG, Panasonic FJ. However, there are:
19 Nichicon HM(M) 1000uF, 6.3V (scattered all over the board)
10 Teapo 100uF, 10V (scattered all over the board)
2 G-Luxon 22uF, 16V
I'm planning on doing a complete re-capping, but wonder what everyone else thinks. Replace just the potentially troublesome ones, or do them all?
I've inspected the board, and there is no visible sign of bad capacitors. The board has a daughterboard with several VRMs and caps on it. Most of the large caps on the motherboard, and all on the daughterboard, are on the "good" list: Sanyo WG, Chemi-con KZG, Panasonic FJ. However, there are:
19 Nichicon HM(M) 1000uF, 6.3V (scattered all over the board)
10 Teapo 100uF, 10V (scattered all over the board)
2 G-Luxon 22uF, 16V
I'm planning on doing a complete re-capping, but wonder what everyone else thinks. Replace just the potentially troublesome ones, or do them all?
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