Toshiba A75 Poor Design Causes Overheating

I recently had the pleasure of working on a Toshiba A75 laptop and found out first hand just how horrible the design on this model is.

My clients problem with this laptop was that it would shut down not 10 minutes after booting. It couldn’t be timed either. Sometimes it was 5 minutes, sometimes 7 minutes, so this led me to believe that it was overheating somehow.

The fans appeared to be functioning properly, I mean they were spinning their blades off. You could see from underneath when you turn the laptop on its side.

I figured it had to be overheating, so I quickly googled a little history on this laptop and discovered that it was notorius for doing this due to poor design.

I took it upon myself to completely disassemble the computer and clean out the dust, hoping that this was the problem. Once I had completely ripped the thing down to the processor, I couldn’t believe what I had found.

There are two main parts to the CPU heat sink. The first part (the one that you can see from the vent at the back of the computer) was restricted to about 40% of full air flow by a wall of dust. This was the better part. The other part of the heat sink (the part right over the CPU), was completely plugged SOLID with dust.

I cleaned all this matted up lint out, put it back together, and ever since, the fan hasn’t even had to go on high power because it cools just fine. Toshiba has simply very poorly designed its heat sink and it therefore acts more like a dust trap than a heat sink. If you need instructions on how to disassemble your Toshiba, check out: the instructions are very clear.

Below are some photos I took of the dust that was trapped in the cooling fins.