Definately replace ALL the electrolytic caps. If one is dead, the others are well on the way.
Cottees wrote:Cap Electro BIPOL 50V 22 uF (65c)
NO, these are used for filters for a sound system.
Jaycar, Farnell, Wagner Electronics, RS Components are all good sources for components but before you buy, please tell them it's for an automotive product with no cooling.
Get the highest temp rating you can and don't go too high above the rated voltage on the cap.
The rated voltage also affects the capacitance, ie: if a cap is rated at 100u at 100v, at 10v it will probably be around 60u.
Also low ESR caps thend to be better as well.
It's almost always the temp that will kill an electrolytic cap because it's filled with a liquid (the electrolyte) and when it gets too hot, it "boils" the electrolyte, which makes the cap leak.
It will boil because of too higher voltage or the ambient temp is above spec.
End of the electronics lesson for today.
Cheers.