DIY repair sony erikson

In detail: do-it-yourself Sony Ericsson repair from a real master for the site my.housecope.com.

A cell phone Sony Ericsson K550i came in for repair with a declared malfunction - the joystick does not work down, the center of the joystick is broken, there is a dot on the display.

We turn on, check. The dot on the image is really present (broken display), the center of the joystick is broken, you can't press down. Well, let's change the display, keyboard backing and keyboard.

We snap off the two latches of the battery compartment:

We take out the battery and the SONY M2 flash drive:

We pry the top of the phone with a screwdriver:

Snap it off and set it aside:

Pry off the upper part with a pick:

and snap it off the case:

And we take out the board from the case:

We snap off the three latches at the top of the phone:

and snap off the antenna at the bottom of the phone:

We swing the display board aside by carefully disconnecting the display cable:

Disconnect the keyboard backing cable and move the main board to the side:

Carefully use a screwdriver to peel off the keyboard backing from the display board (it is held on double-sided tape):

And we take out the display module (it is fastened with four latches on the sides):

Install a new display and keyboard backing (old ones on top, new ones on the bottom):

Glue the keyboard backing onto double-sided tape like this:

Putting everything together in reverse order. We pay special attention to the display cable. We remove the protective film from the display, change the keyboard to a new one (on the left - new, on the right - old):

We collect to the end. We include. Testing the joystick:

We check incoming and outgoing calls, camera, all buttons. We put on a run with periodic switching on - off, incoming and outgoing calls. Everything is working.

Video (click to play).

All photos were taken with a Kodak EasyShare C1530 camera.

By the way, spare parts for sony phones can always be bought on the website following the link. There is a wide selection of spare parts for repairing Sony phones. All spare parts are guaranteed by the manufacturer.

We disassemble the Sony Ericsson W200i phone.

This article is not a guide to action! You are solely responsible for collecting and disassembling your device.
Many manufacturers do not assume warranty obligations if the device has been disassembled by the user. If you do not want to void the warranty for your device, check the warranty terms in the documentation or with the device manufacturer.

Remove the back cover, take out the battery, sim card and memory card.

You can now remove the bezel by opening the latches around its perimeter, starting at the bottom of the phone. Use a disassembly tool or other handy tools, such as a credit card, that can be inserted into the gap between the case and the bezel.

It should look like the picture below. Now remove the four screws that you see. Please note that the black screws are attached to the bottom of the phone, while the silver screws are attached to the top.

You can now separate the top of the phone (system board and LCD) from the base. She's just filming.

The LCD display is framed by a metal frame. It is held on latches around the perimeter of the motherboard. Open the latches and remove the frame.

Now remove the keyboard board. It does not hold firmly and can be easily removed.

The LCD display can now be removed. It rests on a ribbon cable that needs to be removed from the connector. Before removing the ribbon, pay attention to how it is inserted. Then just pull up the display and it will come off. Now you can replace it with a new LCD screen.

Reassemble in reverse order.

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ReMobi service centers in Moscow and St. Petersburg, Yekaterinbug and Novosibirsk, Nizhny Novgorod and Kazan, for repairing mobile equipment, offer you repair of Sony Ericsson cell phones. Our full range of services includes everything from free diagnostics to flashing Sony Ericsson phones.

Our operator will quickly call you back and answer your questions ›

Typical malfunctions

The most common reasons for repairing Sony Ericsson phones are hardware problems. These include the following problems:

problems with the telephone network (you cannot call);
the display is broken (image distortion, darkening, blurring appears);
the keyboard does not work (partially or completely);
sound (distorted or absent);
not charging.

Also, non-observance of the temperature regime leads to the repair of Sony Ericsson mobile phones:

overheating (excessive heating of the device);
hypothermia.

The service center specialists can easily repair your Sony Ericsson smartphone by replacing the battery and re-soldering the contacts.

Summing up, you can make a list of what the breakdowns and repairs of Sony Ericsson Xperia are usually associated with:

improper use of the phone;
use of fake chargers;
software failure;
mechanical stress;
the influence of moisture;
self-repair;
a factory defect, which is quite rare.

"Remobi" - to be held in high esteem, you have to love your work!

Interesting to know what. ... ...

No company wants to lose fame, success may be short-lived, but fame may be eternal, and Sony Ericsson phones, which were once popular, have again become desirable and in demand among a huge number of buyers. The manufacturer has won the gratitude of the owners for taking care of the quality and capabilities of the device. The company gained fame due to its first models, which were imprinted in the memory of many as the Walkman line, the peppercorn was in high-quality sound, which is still appreciated by lovers of listening to music. The introduction of new Xperia models has helped to bring back its former prominence. The Xperia line is selling fast and swiftly thanks to the work and patience of the company to create a shape, a quality assembly and a new design.

Read also: 5hp30 DIY repair

In service cable connect to Vcc signal

General digital telephone circuits

Used when connecting a DATA cable

Used to connect the charger

Table 2. Signals of 12-pin interface connector of SONY ERICSSON phones

USB interface voltage

Used when connecting a stereo headset, speakers

Audio interface left channel input

Audio interface right channel input

Data From Mobile Station - data line out

Audio interface left channel output (stereo headset, speakers)

Data To Mobile Station - Data Line Input

Audio interface right channel output

Currently not used

Flash memory programming voltage

The service cable is supplied with a voltage of +3.3 V. When the headset is connected, it is connected to GND

Control To Mobile Station - control line input

DATA signal + USB interface. In the service cable, connect to the TxD signal.

Control From Mobile Station - control line output

DATA signal - USB interface. In the service cable, connect to the RxD signal.

Charger input

Used in service cables as a request signal to turn on the telephone (auto ignition)

Note. The phone recognizes the connected accessory as a headset Hand – Free (that is, the headset microphone is used during a conversation) with a resistance between 8 and 9 contacts of 170 Ohm, and with a resistance between these contacts of 820 Ohm, the phone recognizes the accessory as headphones / speakers (that is, the phone microphone is used during a conversation)

When working with the SONY ERICSSON phone software, the following common terminology is used:

CID - SE phone software protection against unauthorized access: saving a copy of the phone software, reprogramming it or unlocking third-party software. CIDs are also used to protect OTP and EROM areas. For direct work with CID phones, the proprietary EMMA software is used - used in authorized service centers SONY ERICSSON. A smart card is used to protect it from unauthorized distribution and use.

CDA - an identifier used to determine the main parameters of the phone: brand, language package and blocking the device for a specific mobile operator.

OTP (one-time-programmable) - a memory area intended for one-time programming. In SE phones, OTP is used to store IMEI and CID, while the CID stored in the OTP may be a younger version than
actually used phone software.

EROM - Expanded ROM: An area of memory used to store the system settings of the phone. EROM also contains a boot loader that allows the system to control the remote software update interface. If the EROM is damaged, the phone will not work, and when you try to turn it on, it only blinks with an interface lamp, usually located in the area of the infrared port. When restoring the EROM of a phone, it is not allowed to download data from other models or from phones of the same model, but with a different CID.

Phone “color” - BLUE, BROWN, RED: defines the purpose of a particular phone. The “color” of the phone is stored in the EROM. RED phones are intended for sale to end consumers, BROWN are technology phones designed for testing and debugging software, BLUE is an empty board assembled at the factory, but never sold.
grammed and, accordingly, having a clean OTP-zone (which is allowed to write) and a GDFS-zone.

Gdfs - an area of the phone's memory where settings and calibration data are stored, including IMEI and operator lock parameters. In SE phones, the IMEI is stored in two memory areas - in the OTP and in the GDFS. SE phones use NVRAM (Non-Volatile Random Access Memory) to store GDFS. If the IMEI values in GDFS and OTP are different, the phone will not turn on.

DBхххх - designation of the hardware platform of the device.

SIM-LOCK - blocking the phone for a specific mobile operator. Unlike other manufacturers, SE phones store lock settings in NVRAM. The presence of blocking for a specific operator is also reflected in the phone's CDA. If you insert a SIM card of another mobile operator into such a phone, the message "Insert correct SIM" will be displayed on the phone screen

USER-LOCK - phone code set by the user.

According to hardware and software components, relatively modern SONY ERICSSON phones are divided into two families - A100 (A1) and A200 (A2), and within families - by platforms, denoted by an alphanumeric code. A100 family includes hardware platforms DB2000, DB2010, DB2011, DB2012, DB2020, and A200 family includes DB3150, DB3200, DB3210. Older models belong to ARM, AVR, CR 16B platforms, as well as a number of ODM platforms. See Table 3 for hardware platform details for some of the popular models.

Table 3. Correspondence of hardware platforms and models of SONY ERICSSON phones

Sony Ericsson Cellular Phone Service Centers and Workshops

Barnaul, st. Pavlovsky Trakt, d. 251, TC Europe view on the map

Repair of mobile devices and gadgets: cell phones, smartphones, e-books, GPS navigators, tablets, radio stations