Apple II Computer Info
#############################################################################
### FILE : fix.cap
#############################################################################
### Created : Monday, November 18, 1996 Modified: Monday, November 18, 1996
### File Type: "TEXT" File Creator: "LMAN"
### File Size: 3081 bytes 3 KB
#############################################################################
Path:
news1.icaen!news.uiowa.edu!news.physics.uiowa.edu!nntp.ksu.edu!news.cis.okstate.ed
u!news.ecn.uoknor.edu!munnari.OZ.AU!spool.mu.edu!uwm.edu!cs.utexas.edu!news.sprint
link.net!news-peer.sprintlink.net!news-
peer.gsl.net!news.gsl.net!portc01.blue.aol.com!audrey01.news.aol.com!not-for-mail
Newsgroups: comp.sys.apple2
Subject: Re: IIGS Monitor problem...Help, Please
Date: 18 Nov 1996 04:26:45 GMT
Organization: America Online, Inc. (1-800-827-6364) (1.10)
Lines: 54
NNTP-Posting-Host: ladder01.news.aol.com
X-Newsreader: AOL Offline Reader
writes:
>
>While tickling the keys two nights ago and dling my e-mail from Delphi
>using Spectrum, there was a slight "poof" sound. Immediately, the screnn
>went from text to a checkerboard pattern, multicolored...red, green, and
>blue, I think...and it began flipping about once or twice a
>second...scrolling
>upwards, that is.
>....
>
Since you still have power for the drives, the "POOF" sounds like a
blowing electrolytic capacitor. (Sometimes, they explode; sometimes, they
poof.)
The main suspect is one of the caps in your power supply; but, it
won't hurt to look and sniff around your Slot cards and the motherboard.
If you do not find anything, pull your Slot cards, replace the 65C816 uP,
and turn ON the computer.
Check the +5V line voltage. (You can find +5V on Pin 25 of any Slot
socket.) If the voltage is at or close to 5V (4.8V-5.1V), there is a
decent chance the 5V line is okay. Also check the other voltages (+12V at
Pin 50, -12V at Pin 33, -5V at Pin 34).
If your system can boot ProDOS 8 from diskette and the display looks
normal, then, suspicion falls on one of the cards you've pulled. Carefully
examine each. You are looking for a capacitor with scum at its base; but,
if you see a burned resistor, blown diode, ..., this could be your
problem. (Diodes, however, seldom poof; resistors usually either pop or
Apple II Computer Technical Information : Apple II Family Hardware Info
ftp://ground.ecn.uiowa.edu/2/apple2/miscinfo/hardware : May 2001 : 163 of 572
(22 pages)
(16 pages)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Commentaires sur ces manuels