Few weeks ago I wrote a post regarding the Samsung T400 dissected and the screen was brought back to life. However as posted there, the keypad of the phone was slightly cranky and had to be modified a little. Well modifications don’t really match the quality of a real working unit.. The keys were still a little hard to press and each key would require different amount of pressure to make the input work.

Oh anyway, let’s get to the point. I managed to get the replacement unit for this phone at a local flea market. The phone was pretty much screwed up with its flipping parts broken into 2. LOL. The unit was from Vietnam though.. (says the firmware when it was booted up).

Ahh, the two keypads together. Look at the hinge where the other phone broke. *ouch*.

(“new” and old)(rev 3.3 and rev 3.2)

The two mainboards together. The keypad of the phone was actually soldered on the main board of the phone so it would be a little messy if the keypad was replaced. Instead, the easier way was to simply swap the main boards and plug everything back in. The “new” board was a rev 3.3 board while the original one was rev 3.2 . Didn’t notice any difference in performance though. I accidentally broke the volume button ribbon during the brain transplant. Such a waste, no more volume control for the phone but then the other functions works good. If there’s a need for the volume control in the future, I shall perform another surgery to transplant the volume control ribbon from the working unit.

Now the phone is working great. Time to get another sim card and get it back to duty.

Total cost of repair: RM2.

Alright, there was this Samsung T400 phone lying around because the screen was supposed to be “not working” . Sent it to the repair shop for a checkup and was told that RM80 would be needed to get it fixed. The ribbon connecting the main board to the LCD screen was “supposed” to be broken.

Heck.. for a 7 year old phone, RM80 isn’t worth the money. So lets get dirty and break it up.

The Samsung T400 was only secured by 5 screws on the lower part of the phone while only 2 screws held the screen in position. Unscrew them, un-clip the plastic holders securing them together and its open. Easy huh?
The phone consists of only 2 parts which are the screen and the main-board. LOL.

Once opened, the whole board looked like a “forest” of IC’s and pins. I’m no expert in this so I’ll just have to do it the usual NBTD way, which is to remove all removable pins/plugs and simply clean the device. The chances of getting your stuff repaired this way are close to ZERO but then what else can be done? Just trying my luck.

The phone was simply powered up to see what comes out and *pooof*
It lights up!

Before assembling back the parts together,  the keypad of the phone was slightly modified by adding some supporting pads on some of the keys. Due to wear and tear, some of the keys are no longer that sensitive and they needed more contact pressure to work.

There you have it, another device brought back to life!  My X1 would be having a good rest now while I’ll get this Samsung T400 up to a good stress test.