faultycomputer.com » exploded view http://faultycomputer.com/blog All the information you need about your IT related problems Sat, 05 Nov 2011 22:04:15 +0000 en hourly 1 http://wordpress.org/?v=3.2.1 Toshiba Satellite switching off due to CPU fan malfunction. http://faultycomputer.com/blog/toshiba-satellite-switching-off-due-to-cpu-fan-malfunction http://faultycomputer.com/blog/toshiba-satellite-switching-off-due-to-cpu-fan-malfunction#comments Mon, 09 Jun 2008 23:34:45 +0000 reuben http://faultycomputer.com/blog/?p=23 Upon switching on the laptop immediately boots without problems. Once the laptop is booted and kept operating for some while it just switches off without shutdown as if there was a power malfunction.

My first impression was that something was not working fine with the battery however I immediately changed my mind after using the laptop on the power pack and ending with the same result.

I booted into safe mode and left idle for some time and nothing happened however exactly after using the laptop with simple functions like word and other utilities the problem came out again by just switching off.

I gave a look to the event viewer to see whether there were any specific errors however I found none. So the problem must have been something else.

toshiba-satellite-bottom-part-of-motherboard toshiba-satellite-cpu-fan toshiba-satellite-cpu-heat-sink toshiba-satellite-cpu-power-fan-connector toshiba-satellite-dis-assembly-procedure toshiba-satellite-exploded-view toshiba-satellite-ide-hard-drive toshiba-satellite-motherboard-closeuip toshiba-satellite-motherboard-detailed-view toshiba-satellite-motherboard-heat-extraction-unit toshiba-satellite-motherboard-layout toshiba-satellite-motherboard-side-view

I decided to dismantle the laptop to have a better view of the problem.

  • first remove any peripherals that can be clipped off like the battery the CD Rom, the hard drive.
  • then start by removing the top speakers mesh as a whole. this has multiple clips so pay attention.
  • Unscrew the keyboard and detach safely by also unplugging the ribbon cable slowly.
  • Then you need to unscrew the screen screws from the back and top part to disconnect it entirely. Pay attention for the black and white cables that come from the WIFI network card.
  • Unscrew the top screws of the top chassis and then flip over the laptop to unscrew the lower ones.
  • Once this is done the lower part should come off also through un-clipping some clips from the front end.
  • Once done the top part should come apart always pay attention to the ribbon cables of the various devices.
  • Have a look at the images to get a better idea of the parts and screws.

Once I performed the dis-assembly I started a visual inspection mostly of the power section which did not have any negative results. Everything seemed in place.

However looking at the connectors of the CPU fan I found out that it was not inserted well in place firmly so with a finger I pushed it in place. I suspected that this might have been the problem since the fan never ever triggered not even at boot up. With other laptop it is very common that they power up the fan as a test as soon as the laptop is switched on.

So re-mounting everything in place and giving the initial power to the laptop I found out that the problem was all about that simple connector that was not in place. The fan immedaitely powered up and the laptop never suffered overheating again.

]]> http://faultycomputer.com/blog/toshiba-satellite-switching-off-due-to-cpu-fan-malfunction/feed 0 Fenton UPS does not power up http://faultycomputer.com/blog/fenton-ups-does-not-power-up http://faultycomputer.com/blog/fenton-ups-does-not-power-up#comments Sat, 10 May 2008 20:32:03 +0000 reuben http://faultycomputer.com/blog/?p=3  

 

 

 

 

UPS Fault – Does not power UP. UPS Model – Fenton P600E Type – 600Va / 3 Amp / 320 Watts

 

On first inspection the UPS looked dead [...]]]>  

 

 

Rear with connection view and Rs232 portFront

 

 

  • UPS Fault – Does not power UP.
  • UPS Model – Fenton P600E
  • Type – 600Va / 3 Amp / 320 Watts

 

On first inspection the UPS looked dead totally and connecting it to the mains did not trigger the initial relay switch.  The first step was to check the fuse and check that it is fine. In this case it was found that the fuse was ok.

 

Removed fuse holder with extra fuse

 

So the second step was to open the UPS from its 4 screws as can be seen in the diagram below.

Once opened the UPS did not show any initial burnt components and on second inspection the relays and all other major powering components looks in good shape.

 

Checked the Fuse for connectivity

 

With a multi meter I check that power was being supplied on the board and in fact it did power the board. Pay extra attention here when the UPS is powered up in this open state.

At this point I needed some more info so I went to the net and got to know the support page for this UPS being http://www.metapo.com

Here I found out that in normal circumstances the UPS might not switch on if the battery is totally dead.

Fenton mains power connector checked.

 

For this reason I removed the battery and charged it with a different charger of the same power specifications. At this point the battery did charge but I needed to check whether it kept the charge.

After a day or two the battery did keep the charge so I loaded the battery to check its stability and in fact it did keep a stable output. So this shows that the battery was in fact ok.

At this point it clearly shows that there is something with the board of the UPS.

I checked the primary rectifier found on the board and the results taken looked very suspicious.

The rectifier was removed and changed with the same type of values.

Voila UPS powered up.

 

]]> http://faultycomputer.com/blog/fenton-ups-does-not-power-up/feed 0