iMac G3 wont turn on

Question

Level 1

0 points

iMac G3 wont turn on

Hello Mac fans, i got a problem today, I get 2 iMac G3 Slot loading(Blueberry and Lime) but, Surprise!!! 😮 When i open both macs, there's not Rams and HD!. Well... haha, but when i try to turn on both, nothing happen, the blueberry show the green light and i listen the sound of the crt but immediately turn off, the lime didn't turn on at all...
I was thinking that was the missing ram, but searching in similiar discussion of the topic, i realized that the macs play a beep when there's no ram, and my macs didn't plays that beep, so... i don't know what's happening? Could Someone tell me if my macs are really dead or it's just something that i could fix it?

Note: Sorry if i have a bad english, i'm from costa rica and i still learning English

iMac G3-OTHER, Mac OS 9.2.x

Posted on Apr 2, 2013 2:51 PM

Reply

Answer 1

Best reply

Kenichi Watanabe

Level 8

41,572 points

Apr 2, 2013 6:00 PM in response to chuz696

Your English is pretty good, actually... 🙂

A lot of different things could be wrong, since those Macs are quite old at this point. The iMac does a "self-test" at power up, and if something does not pass, it does not continue (probably for safety reasons). It could be a power supply problem. Those CRTs use very high-voltage, so it could be related that component. Make sure you have tried more than one power cord, in case it's a bad power cord. It could be the missing RAM or dead PRAM battery, but I think you are correct that it should do something more than "nothing."

There is a small button inside the iMac, that resets the PMU (power management). This image shows the location, along with instructions.

http://mrjcd.com/junk/PMU.jpg

Please note where is says to ONLY PRESS IT ONE TIME.

I had a case when my even older tray-loader iMac G3 seemed to be dead, and pressing it PMU reset button made it power up again.

Reply