home *** CD-ROM | disk | FTP | other *** search
- Path: ns.ftns.no!news
- From: kenneth@norconnect.no (Kenneth C. Nilsen)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: A-3000 CIA's fried but working?
- Date: 12 Feb 1996 12:11:37 GMT
- Organization: A poorly-installed InterNetNews site
- Message-ID: <1221.6612T1167T650@norconnect.no>
- References: <1633.6605T667T1436@xmission.com> <4esstd$gha@newsbf02.news.aol.com>
- NNTP-Posting-Host: norconnect.no
- X-Newsreader: THOR 2.22 (Amiga;TCP/IP)
-
- The 02-Feb-96 12:35:09, Rich 924 wrote in msg n/a :
-
- >I was plugging in a serial cable on the back of my A-3000 and I saw a
- >spark and the power supply went off! I switched power off and restarted
- >the machine, and I can dial up BBS no problem, print in color no problem.
- >But the A-3000 used to be able to read serial IO at TTL levels from my
- >mircocontroller boards, and now it does not. Are the A-3000 CIA's socketed
- >or surface mount? Where can I get new ones if they are socketed?
-
- Does the sound filter work properly (is it on always?) If so you should take
- a look at the 1488/1489 chips. The filter testing is though not a garanty so
- you should anyway change the 1488/1489 chip's first (they are very cheap 1-2
- uk p.). If this wount help it could be the CIA's even the Paule, but most
- likely a transistor or resistor is blown.
-
- Oh, btw: the 1488/9 are both surface mounted and on the A4000 they are very
- tiny too (don't know about the A3000) On A500/A2000 cut the legs and then
- solder those of.
-
-
- ---
- CREATIVE LINKS __ Kenneth C. Nilsen
- http://www.norconnect.no/~kenneth /_/\ e-mail: kenneth@norconnect.no
- "Everything you want" \_\/ Software & MultiMedia developer
-
-