Toshiba Satellite 2435-S255 Heat Sink Replacement

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Remove the Battery. Whenever tinkering with electronics, always turn them off and remove all sources of power if possible; otherwise you could hurt yourself or damage your machine irreparably.

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crwdns2931653:01crwdne2931653:0 Removing the Latch

Toshiba Satellite 2435-S255 Heat Sink Replacement, Removing the Latch: crwdns2935265:01crwdnd2935265:01crwdnd2935265:02crwdne2935265:0

Toshiba Satellite 2435-S255 Heat Sink Replacement, Removing the Latch: crwdns2935265:01crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

The latch on this is tricky. Fortunately, it’s the only thing you have to deal with.
First, slide the latch until you hit resistance. At this point, you have two options.
You can either keep pushing the latch until the battery pops out. . .
or you can start prying the battery out while pushing the latch (as shown in the second picture above).

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crwdns2931653:02crwdne2931653:0 Remove the Battery

Toshiba Satellite 2435-S255 Heat Sink Replacement, Remove the Battery: crwdns2935265:02crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

Just lift the battery up and out, making sure to lift from the end near the latch.
Now the battery is out! To put it back, just insert it back in from the same angle you took it out on.

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crwdns2931653:03crwdne2931653:0 Unscrew and Remove the Cover

Toshiba Satellite 2435-S255 Heat Sink Replacement, Unscrew and Remove the Cover: crwdns2935265:03crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

Using a T6 screwdriver, unscrew the two indicated 4mm screws to remove the panel.
After that, simply lift and pull out the cover panel.

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crwdns2931653:04crwdne2931653:0 Remove the Heat Sink Brackets

Toshiba Satellite 2435-S255 Heat Sink Replacement, Remove the Heat Sink Brackets: crwdns2935265:04crwdnd2935265:01crwdnd2935265:02crwdne2935265:0

Toshiba Satellite 2435-S255 Heat Sink Replacement, Remove the Heat Sink Brackets: crwdns2935265:04crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

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Tweezers

$4.99

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This step can be kind of tricky. Using a PH00 screwdriver, remove the eight indicated screws. The screws in the four corners are 5mm while the four screws on the left and right sides are 3mm.
It doesn’t matter which order you unscrew them when removing the heat sink.
If you’re removing one of the top or bottom (red) ones for that side last, make sure to use a pair of tweezers to hold the other end so that the bracket doesn’t drop into the laptop.

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crwdns2931653:05crwdne2931653:0 Pull Out the Heat Sink

Toshiba Satellite 2435-S255 Heat Sink Replacement, Pull Out the Heat Sink: crwdns2935265:05crwdnd2935265:01crwdnd2935265:02crwdne2935265:0

Toshiba Satellite 2435-S255 Heat Sink Replacement, Pull Out the Heat Sink: crwdns2935265:05crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

To remove the heat sink, pull it away from the fan and up.
You’ll probably need to wiggle it around a bit, but it should come out easily.
Be careful, however; there will be thermal paste in the middle of the bottom, where it connected to the CPU. If you’re putting in a new heat sink, I recommend cleaning off the CPU and applying a new layer of thermal paste.
Done! The heat sink is out. Check the conclusion for a little information on putting it back in.

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When re-installing the heat sink, start with one of the top/bottom screws for the bracket, then do the middle two, and then the last top/bottom one. For the last screw, push down on that end of the bracket so the screwholes line up. Otherwise, follow these instructions in reverse order.