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PB G4 Ti Screen Issue or Why is My Screen Green?

Submitted by stevek767 on January 14, 2006 - 2:24pm. Hardware Hacks

Just replaced a screen on a PB Mercury Ti (400 mhz G4).

The repair went fine, however when I booted up the machine the screen is a washed out greenish blue color. You can see everything as it should be except it is all washed out due to the aforementioned problem.

I tried reseting the PRAM and the NVRAM, but that didn't help. When I attach it to and external monitor, the picture is fine.

I am beginning to think that the lcd itself is bad or the lcd cable is bad.

Any ideas?

Thanks,

Steve Krug

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gobabushka's picture

Stupid Idea...

Submitted by gobabushka on January 14, 2006 - 2:30pm.

But we've all done this before. Did u check the cable to make sure it was seated correctly?

» My Newest Addition to the Family, A Power Mac G4 Sawtooth!!!, and my PowerBook 1400cs/166 w/ CD Drive!

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Yeah, I'd

Submitted by bin_jammin on January 14, 2006 - 2:32pm.

check for cable connections, both on the LCD side and the mobo side. If it's not a bad connection, or a bad cable, you might be lucky in finding it's a bad inverterr, if it's not one of those things, you may have a bad LCD. Good luck!

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Thanks

Submitted by stevek767 on January 14, 2006 - 2:37pm.

That's my next move. I have to rip it apart again to see if the connections are okay.

Thanks,

Steve Krug

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Hmmmm

Submitted by stevek767 on January 14, 2006 - 2:41pm.

How would I check for a bad inverter? If that was the case wouldn't it also have bad video on an external monitor?

Thanks,

Steve Krug

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coius's picture

if you need a new cable

Submitted by coius on January 14, 2006 - 3:51pm.

i have one, just pay $5 and s/h from 68132 in the USA

» troubleshootnow.com. When you need to troubleshoot NOW! Forum site for macs and PCs. We are happy to help you troubleshoot. Home WebPage: coius.info <-Served off an iMac in my roo

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Update

Submitted by stevek767 on January 16, 2006 - 12:07am.

Have replaced the cable from the logic board to the lcd and still have the same problem. Does anyone know how to test to see if it's the inverter board that's going bad?

Thanks,

Steve Krug

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gobabushka's picture

all i can think of would be t

Submitted by gobabushka on January 16, 2006 - 12:14am.

all i can think of would be the onverter or the connector on the lcd or the logic board

» My Newest Addition to the Family, A Power Mac G4 Sawtooth!!!, and my PowerBook 1400cs/166 w/ CD Drive!

"I reject your reality and substute my own!!!" -Adam Savage, MythBusters
I HATE MICRO$SOFT!!!!

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