In a message dated 12/10/02 8:07:46 AM, [EMAIL PROTECTED] writes: << ... It looks like any other fuse on its ends, but the middle, where I'm accustomed to seeing a glass tube with a wire running through it, seems like its made of paper. What's the deal, and what would it look like if it were blown? >>
Probably a special non-exploding fuse. The "paper" is probably ceramic. Lots of the components in switching power supplies (and in TV horizontal oscillator circuits, from which the ordinary flyback-type switching power supply is a logical descendant) are required to be "flame proof" or "explosion proof". Do a continuity check before writing off that PSU. If the fuse is blown, then the problem is most likely in the primary (converter) side of the PSU, not in the secondary (inverter) side. If the problem is in the primary side, do a continuity check of the four diodes in the converter (or the four diodes contained in the bridge contained therein). The most common primary side failure is the bridge or one of the four diodes. If not in the bridge or the diodes, then in the one dual-type or two single-type "bulk storage" caps, which are connected to the bridge. -- PCI-PowerMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Sonnet & PowerLogix Upgrades - start at $169 | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
