Nieszczelne Kondensatory i niestabilności komputera



Jakiś czas temu zrobiłem artykuł tutaj o nieszczelne kondensatory i związane z kilku naprawdę świetnych zdjęć “zdrowy” mainboard kondensator i “wypukły” kondensatory. Długo opowiadanie to jest wersja… Dawno nie było pewne szpiegostwo wśród producentów kondensatorów. Ktoś miał naprawdę dobrą formułę elektrolitu (the goo inside a capacitor) and the other companies wanted it. Dobrze, what they wound up getting was not the real formula, but a fake. Tak… any capacitors made with the false formula will be more likely to fail. W rzeczywistości, it’s as though over time the electrolyte expands causing the capacitors to bulge and in some cases leak. Why is this computer related? Because if you crack the cover of a pc and look there are dozens of electrolytic capacitors on the mainboard.


I’ve seen some active failures (smoke) and I’ve seen some that are just “wypukły”. Tak… when I see a system that is acting unusual. Strange and seemingly random freezes and the hard drive doesn’t seem to be the problem, the next thing I start suspecting is that the system board has problems. The most recent one that I saw had a row of capacitors next to the CPU and all had bulged and a tiny bit of crusted electrolyte had leaked out on each.

The symptoms the system gave were as follows: to start out with the power supply was deadnot sure if this could be caused by the capacitor issue on the mainboard – (fluctuating power demands?) but upon replacing the power supply the system failed to postit gave a long beep followed by two short ones. This is when I inspected the board and found the crusty/leaky capacitors.

So, I made sure video/cpu and memory were firmly seated and tried to boot again. This time it started up and made it partway up to a scandisk. In fact it was at 52% when it just stopped, frozen. I waited a little while, but the system had really hung. So, I powered down again and doublechecked all on board connections. Tried a third time, again long post beep… ponownie… start to boot and make it through the scandisk to the desktop and it freezes while accessing the old tape backup. Reboot… long post beeplong post beepthen finally successful boot to the desktop and a seemingly stable system.

At this point I put the cover back on and set it up right and tried to make sure that everything was working… było. Tak, I held my breath, shut it down and started up again and all seemed well.

The moral of the story is…. after things warmed up the system seemed fine. Jednak, it’s in the process of failing due to the leaky capacitors and I advised the owner to make plans to replace it. In this case it was fine after it warmed up but considering the nature of failing capacitors it’s impossible to say that’s always the behavior you’ll see…. it may be that they do fine cold and when it warms up it starts goingloopy”. Tak… if you’re having unexplained flakey behavior it could just be that your the victim of a 10-15 year old case of corporate espionage gone bad.

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