
Now that you have removed all the screws, you are ready to remove and then replace your new S55T-A5237 (Backlit) laptop keyboard. If you have screws above your Toshiba Satellite S55T-A5237 (Backlit) Keyboard, remove those screws.

If required, remove this part to easily access your keyboard. Otherwise, see your S55T-A5237 (Backlit) laptop manual for details.Ībove your S55T-A5237 (Backlit) laptop keyboard, you have a cover panel. Sometimes your laptop will have a picture of a keyboard next to the screws that need to be removed. The first step to replacing your laptop keyboard is to remove the screws from the back of your Toshiba Satellite S55T-A5237 (Backlit). Make a good photo of the connector, that makes things easier to designate.Prior to replacing your Toshiba Satellite S55T-A5237 (Backlit) laptop keyboard, make sure to remove the battery and disconnect the ac adapter from your laptop. Either shorting the on/off to ground or supplying a tiny current to it would turn on the backlight. Measure all pins with a multimeter, see if anything is 'live'. The other design option is that one of the bl pins (six in total?) is the on/off switch, triggering a relay on the kb itself. If it turns on, you might solder a wire to make the connection permanent, optionally with a switch in-between, if you want to be able to turn it off again. Bypassing that relay will turn on the backlight, this is something you can easily check while it's running. Now, the on-off switch might use a small, 3-pin relay close to the bl connector.

This risks bricking the board, however, so without a programmer this is a rather exciting procedure. If it's all there, then a near-matching ec is likely to work. However, if they'd save cost on a non-bl model, then they'd have left the connector unpopulated as well ($0.10 saved = $0.10 earned). Other than that verify that there are smd components right after the bl socket. You might need a matching ec, which flashed along with the bios (e.g., extract this file Toshiba Satellite P850-B BIOS 6.70).
