iMac 2006 HELP!


okay, here's situation. have 2006 imac 20" 2.16 ghz (model: a1207). other day room computer in being reorganized. before moved anything, shut down computer because knew wanted move ups 1 place required computer unplugged , power cord routed around desk in different way. anyway, after shut down, later came after had been moved. pressed power button turn on, , there no response. pressed again, , nothing happened. went through usual things, resetting smc, trying different outlets, etc.

know this: when plugged in, there faint high pitched hum coming machine (i assume normal, i'm not sure). every 3 seconds there faint clicking sound. after following instructions 3 diagnostic leds, notice lowermost led on when computer plugged in. normal, far know, , means there power coming in. nothing happens when press power button. however, every 3 seconds (at same time clicking sound) middle led flashes on fraction of second, while lower light simultaneously turns of , on again. every 3 seconds.

also, plugged in usb charging cable remote control toy see if usb ports getting power. @ time click , middle led flashing, light on usb cable indicates receiving power flashes on. don't know how of information relevant, that's know far.

advice appreciated.
 

it sounds might power supply has kicked bucket.

have found link: https://www.ifixit.com/answers/view/138335/my+imac+will+not+turn+on

in description, troubleshooting guide apple, there following description:
from sounds need replace power supply in order , running.
 


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