This was discussed a while back (although perhaps on one of the other lists). The ADB "fuse" is actually a PTC (positive temperature coefficient) thermistor... In short, if the current goes too high the resistance increases greatly thereby reducing current to almost nothing, much like a fuse opening. The advantage of using this type of part is that when it cools off, the resistance goes back down. It is in essence a self resetting fuse. The part in question is immediately next to the large filter adjacent to the ADB connector. It is silver in color and .25" x .35". The part can either be ohm'd out or you can check the ADB output voltage when under load. It should be +5V.
Go to: http://ps.circuitprotection.com/poly/ They offer a large variety of these devices. Derek -- Quadlist is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Enter To Win A | -- Canon PowerShot Digital Cameras start at $299 | Free iBook! | Support Low End Mac <http://lowendmac.com/lists/support.html> Quadlist info: <http://lowendmac.com/lists/quadlist.shtml> The FAQ: <http://macfaq.org/> 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/quadlist%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
