it's nearing the time when the IMAX
released at the end of 2009 are no
longer covered by Apple care and if you
own one that might have you thinking
that if something major like the power
supply goes bad
that you'll be in the market for a new
computer but not so fast hi I'm MJ with
iFixit and today I'm going to show you
how to replace the power supply and a
late 2009 iMac but a couple quick things
about this repair first if you have a
late 2007 or early 2008 version of the
iMac you'll want to watch this video
instead second the 2010 version of the
iMac does use the same power supply but
the repair process is a bit different
which leads me to my third point this
video is a great overview of the process
but a video is never an equal
replacement for actual step-by-step
instructions so I insist that you follow
the repair guide on our site when you
are doing your repair or you can
download and install bi fix an app on
your iOS or Android device and follow
along that way that all being said let's
get my parts and tools together so I can
get started for this repair I'm going to
need a set of heavy-duty suction cups a
t10 Torx screwdriver which I'll get from
my 54 bit driver kit tweezers and you're
also going to need a thin probing tool
I'm going to use one of the probes from
our economy probe set but if you don't
have one handy you can use a paperclip
the probe is a little easier to work
with though last but not least you're
going to need your replacement power
supply there are a couple of other
things that I'd recommend even though
they're not totally necessary one of
them is a magnetic screw map to keep
track of all those teeny tiny screws
another is an anti-static wrist strap to
protect your iMac from any accidental
static discharge and some screen cleaner
and a microfiber cloth to clean the dust
off the glass before we put it back on
now that I've got all of my parts and
tools together I can get started by
removing this front glass to do that I'm
going to lay the iMac down in its back
and apply the suction cups to the top
two corners of the glass
once those are locked down I'm going to
remove the glass by gently lifting up
and then sliding it in the direction of
the top of the computer once the glass
is off you're going to want to make sure
to set it somewhere where there is zero
chance that it will get knocked over
now that the glass is off I can begin to
remove the 8 t10 Torx screws that are
securing the LCD to the frame you're
going to want to watch out for the
magnets because they have a tendency to
grab onto the screws as you're pulling
them out
now that all the screws are out I can
begin to work on getting the LCD out of
the case the LCD is pretty big and takes
up most of the space that the case has
to offer
and since fingers are a little bit too
big to get in there and lift it up I'm
going to use my probe tool I'm going to
start lifting the LCD from near the top
of the computer and to do that I'm going
to have to rotate it to get a better
angle okay now that I've got the LCD
slightly lifted out of the case I'm
going to be careful not to lift it too
far because there's still a bunch of
cables connected underneath to start
disconnecting those I'll begin with the
vertical sync cable
now that I've got all four of those
cables disconnected I can actually
remove the LCD from the outer case now
just like the glass when you remove the
LCD you want to make sure to put it
somewhere safe now that the LCD is off
we get our first real glimpse at the
inside of the iMac and I'll go ahead and
rotate it around so you can see it we
can actually start to get to work on
removing the power supply now which is
held in place by a couple of cables and
four screws but before you go removing
the power supply keep in mind that it
does have the potential to shock you so
you do not want to touch the face of the
power supply work safely and very
carefully that being said I'm going to
get started removing the screws that
hold the power supply in place
now that those screws are out I can
disconnect the cables that are holding
it in place
both of the cables have locking
mechanisms so if you're having a hard
time disconnecting the cables make sure
you're depressing the little locking
mechanism down all the way okay with the
cables disconnected the power supplies
should lift up and out pretty easily if
the plastic frame around the power
supply comes out with it that's okay you
just want to make sure it makes it back
into your computer before we assembly
for all of the parts and tools for this
and many other repairs head to
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thanks for watching and happy repairing