Capacitators

[Nick]

right straight to point offered to my mums freinds pc, pick it up from her house, take it home, open it up and about 6 capacitors have bled crusty brown stuff, i explain to my mum whos good on a pc but hardware illiterate whats happened and offer to replace the 478 mobo,

i try to explain this to the friend but she dosnt understand either, so my question i, drum rolllll, why do capacitators bleed?

 

[Hefemeister]

Usually it is due to overheating.

 

[nu2duo]

For further explanation go here: Badcaps.net - How To Identify

 

[Nick]

i still want to know why these caps have swollen

 

[veedubfreak]

Read that web site. There was a HUGE fiasco over some stolen capacitor recipe that was then used on tons of boards which lead to the caps overheating and bulging/leaking. Basically if a capacitor gets too hot gas expands inside and it breaks the little X on the top. Lots of old capacitors slowly dry out over time which can also lead to overheating and then bulging.

 

[Nick]

oohh thanks for the info, i appreciate it

 

[DaMadScientist]

bad manufacturing process is the number 1 reason

 

[Nick]

overheating, crappy PSUs etc etc....