Thanks for the link, I'll keep that handy.
I did find one HP board in the early hours this AM One could JUST see the marking on one cap the way they are on mine.
Could HP have marked the MB against convention? Also, after many sites confirming the convention, and in the dead of the night, I began to wonder if they'd all been put in the wrong way round!
(There are about 20 more with this reversed marking.)
Because electrolytics of this capacity are difficult to check with an AVO 8, I got inconclusive results from charging the one good condition one. (of 6) It did however, charge in the correct direction, and maintained voltage when measured with a DVM. Whereas the messy ones seemed to have reversed and furthermore, leaked in both directions. This reversal thing rings a very, very distant bell. It just makes more
when trying to be certain.
Should have been such a simple little job - assuming non of the other MB layers are allowed near the full-thickness holes. They wouldn't do that, would they?
I