You're absolutely right. The correct way of testing it for voltage is to plug a power connector to a device such as a disk drive/Mobo and then to insert the apparatus behind the connector while plugged. > -----Original Message----- > From: Stroller [mailto:[EMAIL PROTECTED] > Sent: Friday, March 21, 2008 12:18 AM > To: [email protected] > Subject: Re: [gentoo-user] {OT} Power supply or motherboard dead? > > > On 20 Mar 2008, at 19:42, Marzan, Richard non Unisys wrote: > > > Get a volt meter and measure the voltage. Red is 5+ volts yellow is > > 12+ > > volts; if you're getting less than that or way too much than those > > values then the component needs to be replaced. > > I believe that the PSU has to be under load for the voltage to test > correctly. > > You can get testers for ATX PSUs for about £20, I noticed recently, > and a search suggests they're much cheaper on eBay (see items > 190207549145, 280209639310) > > > Try also swapping the > > memory modules out one by one; interchanging them and see if that > > makes > > it boot up. Some, not all, BIOS programs need some ram to boot the > > machine. > > Grant, > > It's not clear from your other posts whether you've tried this. If > I'm testing a motherboard I _always_ want to have RAM in it - testing > without doesn't prove anything (to my satisfaction). > > > It could also be a broken power switch. If that is the case, > > try to ground the pwr pin to a grnd(black) pin with a flat head screw > > driver on the MB. > > Forgot to mention this in my previous post - this is usually one of > the first things I try, because it's so easy to do. > > Stroller. > -- > [email protected] mailing list
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