2013 iMac Won’t Start Up

[Papanate]

I was given a 2013 iMac 21” - it started up 3 years ago no problem - it sat in a loft for 3 years neglected and alone - now it won’t even start - no fan noise - no black screen etc…before I take it apart to check the LEDs - is there any thing I can do? I’ve already tried the unplug it and pressing the power button for 20 seconds then plugging it in and pressing the power button for 20 seconds - nothing.

Ideas?

 

[Nguyen Duc Hieu]

I was given a 2013 iMac 21” - it started up 3 years ago no problem - it sat in a loft for 3 years neglected and alone - now it won’t even start - no fan noise - no black screen etc…before I take it apart to check the LEDs - is there any thing I can do? I’ve already tried the unplug it and pressing the power button for 20 seconds then plugging it in and pressing the power button for 20 seconds - nothing.

Ideas?

Try another power socket?

 

[Fishrrman]

If the power socket switch doesn't help, sounds like it might be the internal power supply.

For a 12-year-old iMac, probably not worth the cost of trying to repair it, unless you can get the parts REALLY cheap and then do the work yourself...

 

[Papanate]

Try another power socket?

I tried the power cable on another iMac - it worked fine.

 

[Papanate]

If the power socket switch doesn't help, sounds like it might be the internal power supply.

For a 12-year-old iMac, probably not worth the cost of trying to repair it, unless you can get the parts REALLY cheap and then do the work yourself...

To be dumb - why would the iMac start up like regular over 7 years -rest for 3 - and then the power supply blows?
SThat’s what I can’t figure out - trying to find out if others have had a similar issue and what it was.

 

[salamanderjuice]

To be dumb - why would the iMac start up like regular over 7 years -rest for 3 - and then the power supply blows?
SThat’s what I can’t figure out - trying to find out if others have had a similar issue and what it was.

Lot's of reasons. Corrosion, water damage, bad solder joint, bad caps, etc.

 

[Nguyen Duc Hieu]

To be dumb - why would the iMac start up like regular over 7 years -rest for 3 - and then the power supply blows?
SThat’s what I can’t figure out - trying to find out if others have had a similar issue and what it was.

I had quite a few similar issues, not just on computers, but also on other electronic devices.

Cause:
Parts level: Power supply unit, power switches, cables.
Components level: capacitors, diodes, transistor of the power regulation function.

My solution:
Take it to the repair shop for a quotation. If the cost of repair is acceptable, have it fixed. If not, ask the repair shop to dispose it.

 

[Papanate]

I had quite a few similar issues, not just on computers, but also on other electronic devices.

Cause:
Parts level: Power supply unit, power switches, cables.
Components level: capacitors, diodes, transistor of the power regulation function.

My solution:
Take it to the repair shop for a quotation. If the cost of repair is acceptable, have it fixed. If not, ask the repair shop to dispose it.

Yeah anything over $25 would be too much - I’ve got nothing tol ose by cracking it open - maybe I’ll see something.