Quote: Originally Posted by biggles1000
Quote: Originally Posted by Mike Connor
Probably. You should NEVER attempt to switch voltages or do anything else at all like that with power connected to the machine.
This is not only because it is likely to fry your machine, but because it is also likely to fry YOU !!!
I guess I should consider it a lucky escape and be more wary next time
Quote: Originally Posted by wilywombat
Unless you are good at fixing PSU's then I would guess that the answer is yes...Time to go buy a new one!
Well I took it apart afterwards (being careful with what I touched) and the fuse didn't look blown. any idea what would be damaged?
Switching power supplies are only serviceable by a qualified electronics technician. Trying to do so without the required knowledge and equipment is extremely dangerous and unlikely to work.
Usually, the "big green flash" is caused by an exploding condenser, ( AKA Capacitor), this also tends to spray the circuit board with the contents and produce a nasty smell. Switching power supplies that have been subjected to catastrophic failure in this manner are theoretically reparable, but it is not worth the time and effort involved to try. Not even for a qualified technician. The unit would be replaced.
EDIT: Because it may be of general interest. Switching power supplies function quite differently from transformers and similar equipment. Highly specialised equipment is required to test them. They only work properly under very specific load conditions. Repairing such equipment is completely outside the scope of any hobby computer builder.
Some more information; http://en.wikipedia.org/wiki/Switched-mode_power_supply http://en.wikipedia.org/wiki/Power_s...%28computer%29