You may 'usually' replace a capacitor with another capacitor of like or greater value and like or greater working voltage rating as long as they are the same type and temperature rating (and still fit properly in the existing mounting holes.
The large-value, low-voltage aluminum electrolytic caps on motherboards are also, usually, designed to have Low ESR (Equivalent Series Resistance) so that they can handle large ripple currents without excessive self-heating. Also, the more overloaded your PC's power supply is, the harder the motherboard's filter capacitors have to work to compensate for the extra ripple - until they eventually die from over-stress. _jim -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Thane Sherrington (S) Sent: Tuesday, October 04, 2005 4:56 PM To: The Hardware List Subject: Re: [H] Replacing capacitors At 07:23 PM 04/10/2005, Jin-Wei Tioh wrote: >The voltage rating is only how much that cap can stand (kinda like using a >12V >1A wallwart when you only need 250mA). The capacitance is more important and >its always advisable to replace them with the same rating. RF engineers go >through a LOT of trouble modelling every tiny bit of parasitics when >designing >boards :P So I can replace a 1500uf 6.3V cap with a 1500uf 16V cap, but not with a 2200uf 6.3V? That's backwards of the way I understood it. T
