paluzzi@oddjob.UUCP (Paul Paluzzi) (09/16/85)
*** Trust the Computer! The Computer is your friend! ***
Recently (2 weeks ago), my Mac's power supply was fried by
a power surge. I took it in to my dealer, who replaced the
supply for me. The problem is this: since I got the computer
back, the active screen area is much larger (extending up
into the corners of the physical screen), and the bell is
annoyingly loud upon startup. Since I did not have this
problem before, two possibilities have come to mind:
(1) My friendly dealer decided to give me some "extra," free
service. This seems unlikely.
(2) The new power supply is delivering more voltage than
the old one did. I know the screen height and width are
controlled by pots inside the computer, and I would guess
that the beep could be controlled similarly.
Either way, I don't really feel like leaving my Mac in the
hands of this dealer again. I would like to hear if anyone
else has had a similar problem, or if anyone has any ideas
about the solution. If the power supply voltage is the culprit,
does anyone know where the pots that need adjusting are?
Thanx,
Greg Hajek
:wqdale@wucs.UUCP (Dale Frye) (09/17/85)
In article <965@oddjob.UUCP>, paluzzi@oddjob.UUCP (Paul Paluzzi) writes: > > Recently (2 weeks ago), my Mac's power supply was fried by > a power surge. I took it in to my dealer, who replaced the > supply for me. The problem is this: since I got the computer > back, the active screen area is much larger (extending up > into the corners of the physical screen), and the bell is > annoyingly loud upon startup. Since I did not have this > problem before, two possibilities have come to mind: > > (1) My friendly dealer decided to give me some "extra," free > service. This seems unlikely. > > (2) The new power supply is delivering more voltage than > the old one did. I know the screen height and width are > controlled by pots inside the computer, and I would guess > that the beep could be controlled similarly. > > Either way, I don't really feel like leaving my Mac in the > hands of this dealer again. I would like to hear if anyone > else has had a similar problem, or if anyone has any ideas > about the solution. If the power supply voltage is the culprit, > does anyone know where the pots that need adjusting are? > The power supply, video and speaker are on the same board. The technician tht swapped out the board did a lousy job. He(or she) should have adjusted the screen properly. There are set measurements for the screen in the Apple repair manual. As far as the volume goes, I have a dumb question. Have you adjusted the volume on the 'control panel' pull-down menu? The case has to be opened to adjust the video. Take it back and DEMAND that it is adjusted on the spot. It only takes a few minutes to do. Dale Frye @ Washington University in St. Louis
gwe@cbdkc1.UUCP ( George Erhart ) (09/18/85)
In article <1166@wucs.UUCP> dale@wucs.UUCP (Dale Frye) writes: >In article <965@oddjob.UUCP>, paluzzi@oddjob.UUCP (Paul Paluzzi) writes: >> >> Recently (2 weeks ago), my Mac's power supply was fried by >> a power surge. I took it in to my dealer, who replaced the >> supply for me. The problem is this: since I got the computer >> back, the active screen area is much larger (extending up >> into the corners of the physical screen), and the bell is >> annoyingly loud upon startup. >Have you adjusted the volume on the 'control panel' pull-down menu? > I think that the problem with the bell volume can't be solved with the control panel because the OS is not running when the bell sounds at power up. I don't recall that there was a manual adjustment for this, however, you could stick a dummy 1/8" plug in the sound jack in back. This will disable *any* Mac generated sound. You would have to remove it if you wanted to hear anything. (Like your favorite game??) -- George Erhart at AT&T Bell Laboratories Columbus, Ohio 614-860-4021 {ihnp4,cbosgd}!cbdkc1!gwe
spector@acf4.UUCP (David HM Spector) (09/19/85)
Your problemss are related to the fact that your dealer didn't 'tweak' the screen when s/he installed your new power supply. Your should take your Mac back to the dealer and ask him/her to adjust the screen for you. The bell problems is due to the fact that the parameter ram is powered by the battery on the power supply board, so, all your control panel settings we lost when the new board was put in. Sometimes the PRAM gets into a funny state when its first plugged in and the Mac won't hold the time/date properly, so what you may have to do to get the controlpanel settings to stay put is 1) turn your mac off. 2) take the battery out of the back, 3) wait 5-10mins 4) but the battery back and reset your Mac's time and control panel settings.. - Dave Spector NYU/acf Systemss Group