iMac G3 not starting

[Coloruser]

Got an Indigo iMac G3 - 350 from a garage sale for free. The unit looks visually ok but it does not start up or even make a startup chime. If i press the power button, all i can hear is a click from the speakers and that‘s it. I followed the standard procedure and opened the unit up, removed the ram and the pram battery. Plus pressed the cuda switch. No change. Made a short video to illustrate the „click“ sound. Maybe it is the PSU? has anyone any idea? It would be too bad to throw the iMac away - from outside it is really still pretty.
View attachment IMG_1131.MOV

 

[ried]

Maybe open it back up and re-seat the G3 daughtercard?

 

[3lectr1cPPC]

The slot loader iMac G3s have the processor soldered, not on a card like the tray loaders. I’d guess an analog/power supply problem but I’m not super knowledgeable on that. Check voltages maybe?

 

[Daniël]

Plug it into the wall and let it just sit for a week uninterrupted. This sounds crazy, but it's worked for several people, including me, for iMac G3 slotloaders with this behavior.

This is the post where I learned of this trick:

iMac G3 Slotload 350MHz No power

Hi all, I'm looking at a 350MHz iMac for a friend. It doesn't power on when the button is pressed at all. I can hear the high voltage come up for a second, and then slowly discharge when the button is pressed. The Power LED doesn't come on, or even flash. I don't hear the CRT degauss. I do...

68kmla.org

 

[Coloruser]

Thanks for the tip @Daniël the iMac indeed booted this time after being plugged-in for 6 days. I will investigate whether it fully works the other day.