Hello Mac Support discussion

Howdy, Im new to computers and to mac. I have an apple g4 tower computer with a 17inch monitor connected to it and its NOT WORKING.
I was working on it last night when i stupidly pulled out the power cord and when it was turned back on it will not restart. The on button on the front of the tower lights up when you press it with your finger but it does not start and when you remove your finger the light goes out again.
The monitor has a light which is on indicating that it is working but only black screen.
Im hoping there is some neat apple trick i can learn from you to get it going... any takers.
Help me learn
Johnny xx

Hi-
Welcome to Discussions!
With any luck, a PMU reset will fix it:
http://docs.info.apple.com/article.html?artnum=86760
But, there is a good chance that you killed the PSU.
Testing may be necessary to be sure.
For a Sawtooth, use this guide:
http://docs.info.apple.com/article.html?artnum=58561
For a Gigabit Ethernet or Digital Audio, use these instructions:
http://docs.info.apple.com/article.html?artnum=95064
For an MDD use this guide:
http://www.jcsenterprises.com/Japamacs_Page/Blog/D275729F-09DA-4FBB-96B3-BEEEB2C 04619.html
For a Quicksilver, follow the Gigabit Ethernet test, noting that Two important differences are pin #22 in the QS is +25v (not +28v) and pin 9 is +25v (not NC).
A pinout of the QS is found on this page:
http://www.xlr8yourmac.com/tips/MDDps_mods/MDD_PSMods.html#update

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I was able to get the settings for Maxent using Gregory's software to force 640x480. Here are my settings
DDC block generated by SwitchRes X for display
MX-26X3
0 1 2 3 4 5 6 7 8 9 A B C D E F
0 | 00 FF FF FF FF FF FF 00 34 38 35 08 06 44 00 00
1 | 0C 0F 01 03 0F 3A 20 78 88 00 0D 00 00 00 00 00
2 | 00 47 4A BD CE 00 31 59 45 59 61 59 81 80 81 C0
3 | D1 C0 01 01 01 01 FF 1D 56 EA 50 00 20 30 46 28
4 | 55 00 40 44 21 00 00 18 8C 0A D0 8A 20 E0 2D 10
5 | 10 3E 96 00 40 44 21 00 00 18 00 00 00 FD 00 3C
6 | 55 1F 45 0B 00 0A 20 20 20 20 20 20 00 00 00 FC
7 | 00 4D 58 2D 32 36 58 33 0A 20 20 20 20 20 00 2D
Valid DDC block: checksum passed
EDID Version........1.3
Manufacturer........MAX
Product Code........13576 (3508) (0835)
Serial Number.......17414
Manufactured........Week 12 of year 2005
Max H Size..........58 cm
Max V Size..........32 cm
Gamma...............2.20
DPMS Supported Features:
Standby
Display type:
RGB color display
Input signal & sync:
Analog input with: 0.700V / 0.300V
Serration Vsync
Sync on green
Separate Sync
Composite Sync
Color info:
Red x = 0.000 Green x = 0.000 Blue x = 0.000 White x = 0.280
Red y = 0.000 Green y = 0.000 Blue y = 0.000 White y = 0.290
Established Timings:
800 x 600 @ 60Hz
640 x 480 @ 75Hz
640 x 480 @ 72Hz
640 x 480 @ 67Hz
640 x 480 @ 60Hz
720 x 400 @ 70Hz
1024 x 768 @ 75Hz
1024 x 768 @ 70Hz
1024 x 768 @ 60Hz
800 x 600 @ 75Hz
800 x 600 @ 72Hz
Manufacturer Reserved Timings:
Standard Timing Identification:
#0: 640 x 480 @ 85Hz (3159)
#1: 800 x 600 @ 85Hz (4559)
#2: 1024 x 768 @ 85Hz (6159)
#3: -768 x -614 @ 60Hz (FFFF8180)
#4: -768 x -432 @ 60Hz (FFFF81C0)
#5: -128 x -72 @ 60Hz (FFFFD1C0)
Monitor Description blocks:
Descriptor #0 is Timing definition:
Mode = 1366 x 768 @ 60Hz
H. Active...............1366 pixels
H. Blanking.............234 pixels
V. Active...............768 lines
V. Blanking.............32 lines
HSync Offset............70 pixels
HSync Pulse Width.......40 pixels
VSync Offset............5 lines
VSync Pulse Width.......5 lines
Pixel Clock.............76.79MHz
Horizontal freq.........47.99kHz
Vertical freq...........59.99Hz
H Image Size............576mm
V Image Size............324mm
H Border................0 pixels
V Border................0 lines
Non-Interlaced
Sync: Digital separate with
* Negative vertical polarity
* Negative horizontal polarity
Descriptor #1 is Timing definition:
Mode = 720 x 480 @ 60Hz
H. Active...............720 pixels
H. Blanking.............138 pixels
V. Active...............480 lines
V. Blanking.............45 lines
HSync Offset............16 pixels
HSync Pulse Width.......62 pixels
VSync Offset............9 lines
VSync Pulse Width.......6 lines
Pixel Clock.............27.00MHz
Horizontal freq.........31.47kHz
Vertical freq...........59.94Hz
H Image Size............576mm
V Image Size............324mm
H Border................0 pixels
V Border................0 lines
Non-Interlaced
Sync: Digital separate with
* Negative vertical polarity
* Negative horizontal polarity
Descriptor #2 is Monitor limits:
Horizontal frequency range.......31-69 kHz
Vertical frequency range.........60-85 Hz
Maximum bandwidth unspecified
Descriptor #3 is Monitor name:
MX-26X3
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Want to change my password -
Any help will be appreciated,
T

Hi
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3. Uploaded to iDisk
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Several days agoI thought I had successfully published a photo page to my site because I was able to access from my computer, but my friends who received the link I sent reported that they could access the page. Could you try to access this link? http://web.mac.com/momorris/iWeb/MA/Hetch%20Hetchy.html
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Why did you change the support discussion the new format is just too hard to get around in you need to bring the old format back or gave us a choice of the new and the old format.

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Question
Hello from Norway with a bad Englisch.
You tell me to uppdate Firefox 3.6 on my MAC Air, it is impossible, I get to 1,5 mb than it stops, MAC support tell me that it is not posible to update Firefox when I am on Firefox, tell me hove to update, [email protected]

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Solved!
Go to Solution.

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Sorry if my English isn't correct because of I'm Italian.
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billqaz a écrit:
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I think you should get Applejack...
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