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Apple Desktops Discussion of Apple's desktop machines including Mac Pro, iMac, Power Mac, and mini

Power Mac - G4 Power Mac. No video. Chimes, fans come on.


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durkajosh

 
Member Since: Mar 17, 2008
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Bad pram battery?
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mac0s9user

 
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Mac Specs: Gateway2000 P5-60. 66Mhz and 128 MB RAM.

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Try this:

http://docs.info.apple.com/article.html?artnum=300537
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durkajosh

 
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already read it

Tried resetting pram, did nothing.
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Soulwar

 
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http://docs.info.apple.com/article.html?artnum=95043

Try the Apple Hardware test also.

When all else fails, try everything!
The Rep System and you.
Life's a joke...If you're not laughing, then you didn't get it.

June 2008

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durkajosh

 
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already read that too

no video, can't use hardware test.
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mac0s9user

 
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Try removing and re-inserting your RAM. it may have just wiggled lose over time
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Soulwar

 
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You tried all of these?
1. Check all video cable/card connections and connector pins.
2. Remove all third-party devices.
3. Reseat the video card.
4. For the Power Macintosh G4 (PCI Graphics) computer, check jumper block at J25. Make sure it is the correct color for the processor type, that it includes all required inner metal clips, and is installed in the correct direction. See "Processor Module" in Service Source Take Apart for more information.
5. Clear parameter RAM. Hold down Command-Option-P-R during startup but before "Welcome to Macintosh" appears
6. Reseat SDRAM DIMMs. Make sure DIMMs are PC-100 DIMMs.
7. Remove all SDRAM DIMMs and try replacing them one at a time to test. Replace any bad DIMMs.
8. Power Macintosh G4 (PCI Graphics): Reset Cuda chip. Refer to article 95065: "Power Macintosh G4 (PCI Graphics) Resetting the Cuda Chip".
9. Reset the logic board:
- Power Mac G4 (AGP Graphics/Gigabit Ethernet): Refer to article 95037: "Power Mac G4 (AGP Graphics/Gigabit Ethernet): Resetting the PMU on the Logic Board.
- Power Macintosh G4 (PCI Graphics): Refer to article 95066 "Power Macintosh G4 (PCI Graphics): Resetting the PCI Logic Board".
10. Test with known-good monitor. Replace monitor if necessary. Refer to appropriate monitor manual to troubleshoot defective monitor.
11. Replace video card.
12. Replace processor module.
13. Replace logic board.

When all else fails, try everything!
The Rep System and you.
Life's a joke...If you're not laughing, then you didn't get it.

June 2008

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durkajosh

 
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Quote:
Originally Posted by Soulwar View Post
You tried all of these?
1. Check all video cable/card connections and connector pins.
2. Remove all third-party devices.
3. Reseat the video card.
4. For the Power Macintosh G4 (PCI Graphics) computer, check jumper block at J25. Make sure it is the correct color for the processor type, that it includes all required inner metal clips, and is installed in the correct direction. See "Processor Module" in Service Source Take Apart for more information.
5. Clear parameter RAM. Hold down Command-Option-P-R during startup but before "Welcome to Macintosh" appears
6. Reseat SDRAM DIMMs. Make sure DIMMs are PC-100 DIMMs.
7. Remove all SDRAM DIMMs and try replacing them one at a time to test. Replace any bad DIMMs.
8. Power Macintosh G4 (PCI Graphics): Reset Cuda chip. Refer to article 95065: "Power Macintosh G4 (PCI Graphics) Resetting the Cuda Chip".
9. Reset the logic board:
- Power Mac G4 (AGP Graphics/Gigabit Ethernet): Refer to article 95037: "Power Mac G4 (AGP Graphics/Gigabit Ethernet): Resetting the PMU on the Logic Board.
- Power Macintosh G4 (PCI Graphics): Refer to article 95066 "Power Macintosh G4 (PCI Graphics): Resetting the PCI Logic Board".
10. Test with known-good monitor. Replace monitor if necessary. Refer to appropriate monitor manual to troubleshoot defective monitor.
11. Replace video card.
12. Replace processor module.
13. Replace logic board.
1. Monitor is known good
2. No third party devices installed
3. done
4. Why on earth would this matter? The machine used to power on and no jumpers have been touched.
5. done. didn't do anything. did not re-chime.
6. done
7. only one dimm
8/9: say to test battery, don't have multi meter.
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mac0s9user

 
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Maybe your RAM has gone bad. Would explain the symptoms
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durkajosh

 
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Nope
Just popped in 256mb pc133 known working.

chimes
no video

I will go the drug store at lunch and get a new battery
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durkajosh

 
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dang
didn't help
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harryb2448

 
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Mac Specs: iMac i5 2.7GHz OS X.9.4

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Have you opened up your machine, removed video card and made sure it is replaced and seated very tightly? Next thing is try a different card.
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durkajosh

 
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hmmm wait a minute. took agp card out, put pci card in.

video!
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harryb2448

 
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Mac Specs: iMac i5 2.7GHz OS X.9.4

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Good you got it working.
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durkajosh

 
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tiiight

I have an agp 6800gt nvidia card here. It won't work though. I am assuming the power supply in the Power Mac is too small. It's only 180w I think.

I have a 480w at home I can throw in.
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