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Level 1

8 points

Imac G3 CRT Takes long time to show up

Hello

I have a problem with my older imac G3. When i turn on the computer it wont show anyting on the screen. The harddrive spins and the OS boot as normaly. If i hook up a external monitor i can see anything as normal. After a while (30 min) the internal monitor begin to show the normal screen first verry dark but after a minut or so it is normal. I think it has something to do with the older crt. Is there an posibility to fix this?

The Specifications of the I-Mac are:

Imac G3/400 DV SE (slot loading dvd)

link :https://everymac.com/systems/apple/imac/specs/imac_se_dv_400.html

iMac, iOS 9.2, Imac G3/400 DV SE (slot loading dvd

Posted on Mar 10, 2018 6:19 AM

Best reply

Allan Jones

Level 9

68,708 points

Posted on Mar 10, 2018 8:15 AM

Welcome!

I suspect the great killer of G3 iMacs: the failed PAV board. "PAV" stands for "power/analog/video" and its location in the case combined with that model's poorly-conceived convection ("fanless") cooling meant the PAV board was exposed to more heat than it could tolerate for long-term survivability. Your description sounds like the power side of the PAV board is not getting enough power to the monitor.

Understand that there are virtually no "new old-stock" PAV boards out there. Everything is going to be used/pulled and thus have already been exposed to life-sapping heat. Even accessing that board is a chore and makes you work in the part of the CRT iMac where deadly residual voltage can lurk. I take apart a lot of computers but will not go that far for a G3 iMac.

Rather than try to fix it, I'd recommend staying with the external monitor if possible. You are lucky--I believe that model was the first imac to feature an external monitor port.

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Imac G3 CRT Takes long time to show up

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