1) Remove ALL power. Remove the AC adapter (Charger) and Battery.
2) Open the laptop display.http://www.irisvista.com/tech/laptops/Toshiba-Satellite-A665-A660/laptop-disassembly-1.htm
Follow Steps 5 through 11.
You can click on any photo to enlarge.
( A Picture is Worth a Thousand Words )
Steps 10 and 11 are on Page 2.
(Access to the pages is done through the Top, or Bottom of the page.
In white - Page1::Page2::Page3::Find another model.
Just click on Page2. You are on page 1)
When you click on the photo, and enlarge it, the 3 screws indicated in the text are circled in Red.
I suggest using a wooden cylindrical object, with one end cut off flat.
When you insert into the indicated hole in the Battery Compartment, (Battery removed), you are pushing against the bottom of the Keyboard.
The BACK of the Keyboard. The side nearest the LCD screen.
Don't use very much force. Either with the wooden object, or your fingers. Patience, and easing the Keyboard up, will go a long way.
The Front of the Keyboard, (The side nearest you), has plastic tabs.
These tabs fit down in the Top Cover. (Palm Rest Cover)
The Keyboard should ONLY, be raised at no more than a 45 degree angle, and slid Forward. (Until the tabs clear the Top Cover)
Otherwise you stand a chance of breaking tabs off.
The Keyboard Cable is still attached to the Keyboard.
(The Keyboard Cable detaches From the motherboard. NOT from the Keyboard)
The Keyboard Cable must be detached from the motherboard, before the Keyboard can be removed. I am also telling you, so you will Not yank up on the Keyboard, not knowing the cable is still attached.
You are lifting the Keyboard up at an angle, as I described above. From the step shown in the photo, you now slide the Keyboard forward a little.
Lay the Keyboard up on the back of the Top Cover, next to the bottom of the LCD screen.
(Display Assembly actually. The LCD screen is part of the Display Assembly. Using LCD screen moniker, is easier to identify )
Display Assembly = Display Assembly (Toshiba)
Video Cable = LVDS Cable (Toshiba)
Display Bezel = LCD Bezel (Toshiba)
LCD Screen = LCD Panel (Toshiba) ]
This way you can freely access the Keyboard Cable connector, on the motherboard.
Step 9, Step 10, and Step 11:
The Keyboard Cable is a FFC. Flat Flex Cable.http://en.wikipedia.org/wiki/Flat_Flex_Cablehttp://en.wikipedia.org/wiki/File:Flat-Flex-Cable.jpg
Wires laid side by side, and covered in a type of plastic insulation, in a flat cable setup.
There is NO connector on a FFC.
The wires at the ends of the Flat Flex Cable, are exposed. Each is connected to a flat thin metal terminal strip.
The connector on the motherboard is a ZIF connector.
Zero Insertion Force.
It is a connector composed of two parts, and is rectangular shaped.
The thin part going across the top, is the Locking Bar.
The Locking Bar edge that meets against the bottom unmovable connector on the motherboard, is angle shaped at the bottom.
The bottom unmovable connector on the motherboard, is also angled shaped, where the two parts meet.
[ Step 9 click on the photo. The Brown rectangular shape that has two Yellow arrows on it, is the unmovable connector part on the motherboard.
The Yellow arrows point to the white Locking Bar ]
When the Lock is pushed into the bottom part of the connector, it wedges the FFC in place. Locks it in place.
When the Lock is moved away from the bottom part of the connector, the FFC is free, and not locked into position.
Looking again at the photo in Step 9, note the two white rectangular outlines, above the tabs of the white Locking Bar.
(Which are above the yellow arrows)
In the photo for Step 10, THIS, is how far the Locking Bar moves UP, (Towards the LCD screen), to unlock the Keyboard Cable.
The two parts (Locking Bar, and unmovable motherboard connector part), DO NOT come apart.
IF, they do, you have broken the motherboard connector for the Keyboard Cable.
This usually means motherboard replacement.
Use care, and gently use the nails of your two thumbs, to raise the Locking Bar up.
Barring this is not feasible for you, use a small flat tip Jewelers screwdriver, BUT USE CARE. EASE up a little on one side, then the other side. Keep going until the FFC of the Keyboard is free.
BEFORE you remove the Keyboard Cable from the motherboard connector, I suggest you make a mark with a fine line magic marker, on one side of the cable, and the same side on the motherboard connector.
This way you will align the Keyboard Cable, back up with the motherboard connector, in the proper alignment.
The Keyboard Cable MUST go back in the same direction it came out.
EVEN if the cable is twisted. (Twisted from the factory)
Apologize if I over-detailed this solution, and/or over-simplified it.
For additional questions post in a Comment.
Free Toshiba Service Manual,http://www.tim.id.au/blog/tims-laptop-service-manuals/#toc-toshiba
Scroll down to the 'paragraph' that starts with Satellite A10. (A10 in blue)
Drop down to the second line (A350D in blue), and scroll across to A660.
Left-click on A660.
This is a PDF file. The computer you are using now has Adobe Reader on it, which uses PDF files.
After you click on the file name (A660) it may take up to 30 seconds, before the first page comes up.
(Took 10 seconds with a medium speed DSL connection ]