Path: utzoo!attcan!uunet!mcsun!hp4nl!sci.kun.nl!Patrick From: Patrick Atoon Newsgroups: comp.sys.amiga Subject: Re: Help! My clock is moving BACKWARDS! Message-ID: <2288@wn1.sci.kun.nl> Date: 15 Oct 90 12:14:15 GMT References: <1990Oct8.055618.27507@IRO.UMontreal.CA> <1990Oct13.220412.26145@sdd.hp.com> <15146@cbmvax.commodore.com> <28107@boulder.Colorado.EDU> Sender: root@sci.kun.nl Reply-To: ovb10@cs.kun.nl Lines: 47 Nick Wilde writes: > [...lotsa clock problems, 8520 to blame for it...] >Mine has had the same problem for a while now. So will some kind person >explain to me: >What an 8520 chip is. It's the chip that smokes most often in your computer, otherwise known as the CIA-chip. You have two of those chips in your computer, they handle most of the ports on the back of your Amiga (Serial, Parallel, Joystick). They also seem to handle the clock. They also handle your diskdrive. I don't know why, but most of my friends having trouble with their Amiga say only one word to me: 8520 (By the way... my own 8520 is also broken 8-( ). Maybe it's because they are connected to the ports without (?) a buffer to protect them. I dunno, this is pure speculation. There must be a reason why these chips break down this easily. Maybe Commodore should find some kind of replacement for these chips. >Where I find it in my B2000 Dunno, I got a 500. In a 500 they are near to the ports and the diskdrive (in the upper right corner). >Where I find new ones. You can order them in any electronics-shop (At least, here in the Netherlands) >How I go about replacing the old ones. If you still got warranty on your computer, let your dealer do it for you (will cost you, however). If you got no warranty, open your 2000, find the chips, take 'em out (really simple) and put the new ones in (maybe you only need to change ONE chip...). Don't put the chips in the wrong direction... (watch the hole in the chip). That should do the trick. >Thanx - Nick No sweat, Patrick +--------------------------------------------------------------------------+ | Patrick Atoon | See y'all at Amiga'90 in Koeln (Germany) | | University of Nijmegen | on 8,9,10,11 november. Be there or be square. | | E-mail: ovb10@cs.kun.nl | | +-------------------------+------------------------------------------------+