PowerMac G4 video card security

Question

Zenorph Author

Level 1

4 points

PowerMac G4 video card security

Hi,

I have a PowerMac G4 with a broken video card i think.

I have a Radeon 9200 SE video card more and i tried to run with this one.

The originaly video card of the PM G4 is an Radeon 9000 Pro.

When I pushed the power button on the computer, nothing happened...!

-With the broken one >> No video but the computer goes on,

-With the other one >> Nothing...

So, I just take a better look on the bus, and on the Radeon 9000 (originaly), there is a little part more just next to the AGP port. And no on the Radeon 9200 SE...

So, maybe it's a security or do you think there is no link betwin the "no power on" and the "little parts"??

Thank a lot!

Posted on Sep 5, 2015 10:45 AM

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Answer 1

Zenorph Author

Level 1

4 points

Sep 5, 2015 10:48 AM in response to Zenorph

http://hpics.li/716a806 / http://hpics.li/92939d4

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Answer 2

BDAqua

Level 10

238,997 points

Sep 5, 2015 11:06 AM in response to Zenorph

Hello, as I recall that is the 25 VDC power & other stuff needed for the ADC connector on the 9000.

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Answer 3

Zenorph Author

Level 1

4 points

Sep 5, 2015 12:23 PM in response to BDAqua

HUM!! OKAY, thanks a lot!

But if there is no ADC on any videocard, there is no 25 VDC connector...

So, my problem about "no power on" doesn't come from the power supply of the ADC, maybe my other videocard its also broken, and the system keep shuting down to protect the computer...

Thanks!

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Answer 4

BDAqua

Level 10

238,997 points

Sep 5, 2015 12:28 PM in response to Zenorph

When exactly does it shut down?

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Answer 5

Zenorph Author

Level 1

4 points

Sep 5, 2015 1:08 PM in response to BDAqua

It just doesn't turn on... no sound, no fan noise, nothing...

But with the originaly videocard, the computer turn on and boot normaly, but no video signal...

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Answer 6

BDAqua

Level 10

238,997 points

Sep 5, 2015 1:56 PM in response to Zenorph

Hmmmm,

The 9200 is PCI instead of AGP, correct?

Is it a Mac or PC card?

If AGP...

Flashed AGP 8x video cards are not compatible with the Mystic/Gigabit Ethernet, Digital Audio, Cube, Quicksilver, and Mirror Drive Door Power Mac G4 without modification. As explained by The Mac Elite, Apple uses pins 3 and 11 on the back of the card to power ADC monitors. These pins must be disabled or your Mac will not boot with the card installed. Full details and instructions are on the Mac Elite website.

http://lowendmac.com/video/agp/radeon-9200.html

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