DIY repair lenovo p780

In detail: do-it-yourself repair of Lenovo p780 from a real master for the site my.housecope.com.

The Lenovo P780 smartphone from a famous Russian company producing modern digital, computer, mobile equipment, Lenovo has gained immense popularity among our population. And of course, like any other device, little troubles often happen with it, which can be eliminated at a service center or you can try it yourself.

The instruction "How to disassemble Lenovo P780" will help you take the first step towards solving the problem of your gadget. However, we advise you to contact the specialists of the “GrandPhone” service center, so as not to make things worse, as the repair of a Lenovo phone after unskilled intervention can significantly increase. Remember all information you use is at your own risk. The author is not responsible for your actions.

Remove the metal battery cover.

We unscrew the bolts along the edges of the case.

We proceed to dismantle the rear of the case. With a flat instrument, it can be a dental spatula or a rigid pick, we release it from the latches on the right side, releasing it down along the perimeter.

From the bottom, move on and snap off the left side of the smartphone body.

The back can now be easily removed and set aside.

We follow on. Now we need to remove the battery. Disconnect the battery connector from the board, unscrew the two bolts that hold it: one at the top and one at the bottom.

We proceed to dismantle the main board. Disconnect the coaxial antenna cable, display and touchscreen flex cable, as shown in the photo below.

We unscrew the two bolts fixing the board.

Unstick the volume buttons, they are held on double-sided tape and turn the board over, as in the picture.

At the bottom, on the back of the board, there is a ribbon cable that goes to the board with system connectors. Disconnect it.

We remove the fee to the side. In principle, this is the end of the analysis.

Now, as promised, I am posting a few photos taken during the replacement of the display module assembly with touch glass on the Lenovo P780. It looked something like this:

And this is our display, which we will install.

But first we have to remove the old broken screen, which adheres very well to double-sided tape around the perimeter of the metal frame. To do this, warm up the display a little with a hair dryer to make it easier to peel off and begin to dismantle it from the bottom. Something like this:

Next, remove the remnants of the tape from the frame, glue a new one around the entire perimeter. Better if it is applied in two layers.

We glue our new module in place and we get a finished working front panel. All that remains is to assemble the device following the same instructions in reverse order.

Video (click to play).

This is how Lenovo looks after repairs to replace the screen.

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There was some kind of black mass along the contour of the screen. It seems not sticky, i.e. the screen does not stick back to it. When replacing the screen, what is this mass replaced with?

You can use double-sided tape or special silicone glue.

Did you change the touchscreen screen together?

Yes, we are changing the touchscreen along with the display on the p780.

The cable that goes from the display is damaged. Is it possible to change it or will you have to completely change the entire screen

We'll have to change the entire screen completely.

Good evening. I have this question. What is the reason for this behavior of my phone and the reason for the vertical whitish stripes on the screen? Story. I changed the screen for myself along with the tach assembly, but before that I had to purchase a new frame for it with scotch tape around the perimeter.There was no scotch tape on the metal plate itself where the screen fits. It worked well, but when you call someone or turn on the mobile Internet, the phone begins to live its own life (it itself clicks on the menu, it can drop the call, it runs through the menu wherever it pleases) There are no problems through Wi-Fi and just if you click on it, only when calls and mobile internet. After some time, more vertical white translucent stripes appeared. Since there was no black tape on the new frame (in the center on the metal base where the screen fits), I glued it from the old frame but on double-sided tape. There should also be scotch tape around the edges, but I applied b7000 glue in that place, as well as along the edge of the frame where the touch was glued. Could there be a reason in the screen or is it in the hardware itself? And I noticed that in some place the touch has come off the screen, apparently. It's just not possible to call anyone, I don't know whether to change the screen again or take it together with a frame. Thank you.

Hello. It looks like the problem is in the display, fortunately we did not have such problems.

Thanks for the instruction. I bought a new battery on Ali for my old man (bought at the end of November 2013, now the end of June 2017). Desmart has a similar instruction, but there is absolutely no coverage of the moment with the latches. I coped with your instructions without any problems.
It is probably also worth mentioning that when peeling off the battery from the protective cover, you have to be more careful - I bent mine a little and now the back cover of the case at the bottom does not close completely. Fortunately, the cover with the bumper keeps it around the entire perimeter.
I didn't have the seventh bolt - the one near the camera and the volume rocker. Nothing dangles in the phone - either it fell out and got lost during one of the openings of the back cover, or somewhere dead wedged. I hope it will.

Read also: DIY abs block repair on bmw

Despite the integrity of the LCD screen, the author of the article decided to change the assembly as a whole (LCD and sensor), because the sensor in this phone is glued to the LCD screen throughout the entire area, that is, in order to change it, great care is needed when separating and washing the LCD screen from residues glue, as well as glue that was not there. The price of the assembled screen is quite acceptable - about $ 30 on Aliexpress.

The screen was ordered, arrived successfully - let's start repairing.

The battery is "non-removable" here. Of course, it is pulled out, but you need to unscrew a few screws that hold it and disconnect its connector.

Unscrew all visible screws and remove the back cover.

And here we will unscrew everything we see, remove the battery, first disconnecting its connector, then disconnect the two loops on top of the motherboard. One from the end of the device - from the sensor, the other on the side near the battery in the form of a connector - from the LCD screen, disconnect the small RF connector on the little black wire. Now you can remove the motherboard, just carefully - another connector is connected to it from below. Lift the board and disconnect the bottom connector. That's it, now you can remove the board.

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Video review of disassembling, opening and replacing the LCD display on the Lenovo A536. Explanations for display replacement, minor repairs.

In this video I am making a report on the repair of the Lenovo P780 phone at the request of the subscriber. 😉

if your touch screen is cracked and it does not respond to touches, then in this video I will teach you how to restore.

Lenovo P780 motherboard - Display with frame Lenovo P780 - Display repair adhesive -

In this repair we will show you how not to “repair” a mobile phone, and we will act as necromancers. 😉

This video shows the disassembly of the Chinese smartphone Lenovo P780 for antenna repair. Attention. First you need to.

The phone fell into my hands with a breakdown, does not respond to pressing the sensor, the module is broken, the module was replaced with.

a spatula from a set for depilation)))

There are two modules, a lower and an upper one. I disassembled the lower one, there was no sense, but the upper one, as soon as the screw was unscrewed, the connection immediately appeared, but when screwed in it disappears again.

Hello!
Do I understand correctly that there is a radio module at the bottom?
After my fall, my Lenovo P780 began to get poorly connected, the antenna contacts are in order - the service said that the radio module is faulty and needs to be changed. The service is tight with components. Can you tell me where you can order it or what kind of marking it has?

Guys ! Help, I updated my P780 to a whale kata by air, everything seems to be fine, after a couple of three days I offered to update it again, supposedly fixing all the errors, well, I updated and then it started - if before the phone charged every three days, now it barely lives a day. and the main problem is that the connection is very bad, just awful. where on lenovo A820 a complete network, I have one or two sticks showing.and gps also does not work (the location is not determined at all ((((tell me at least something please (of course, except for "throw it the fuck out"))

homemade - hello! These are not bolts, these are cogs.

Please tell me if the antenna wiring is polarized on the contacts)))? I need to replace the antenna cable itself, but I don’t know, or you can put either side))

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Marriage and renovation Lenovo IdeaPhone P780

Lenovo IdeaPhone P780, Lenovo P780
Description | Discussion "| Purchase "| Marriage and renovation»| Firmware"

Before posting a photo, read the topicWorking with images on the forum
Messages that are not related to the topic of discussion (offtopic) are deleted without warning.

Almost no WiFi signal. There was 1 case.
Affected user Zorrobest999. Messages 1,2,3,4.
Screen flickering.
It manifests itself in a small number of users. We look at the essence of the problem here. More details here.
There is a solution . We look here.
Defective pixels.
It is possible that a defective matrix was used in some batches. Not seen on all phones. An example of a problem description. Detailed description and photo here.
Photographs of the screen under a microscope with 80x magnification (pixels, mesh, glass strength)
It is not yet clear what to do. We will collect statistics later.

To disassemble a smartphone, just follow the step-by-step instructions:

First, the metal cover is removed, under which the battery is hidden.

Next, the bolts located along the edges are unscrewed.
After that, it's time to dismantle the rear case. Using a flat tool, you will need to pry it on the right, gradually dropping down. A rigid pick or dental spatula, or any other item that is comfortable for the user, will work as a tool.

After detaching the lower part of the body, you need to move the tool to the left side, gradually dismantling it.

5. When these steps are successfully completed, the back part is freely removable. It can be put aside.

Then the battery should be dismantled. To do this, the battery connector is disconnected from the board, the bolts that hold it are unscrewed. One of them is at the top, the other is at the bottom.
It's time to dismantle the main board. It is necessary to disconnect the antenna cable, as well as the display cable and the touchscreen itself.
The board is fixed on two bolts, they will have to be unscrewed.
The volume keys, held on the double-sided tape, are peeled off and then turned over onto the board.
There is a ribbon cable on the opposite side of the board from below. It is directed towards the board with system connectors. It should be disconnected.
Then the board should be removed to the side.

That's all. The smartphone is disassembled. Now you need to prepare a touchscreen for lenovo p780 with display. However, you will first need to dismantle the old damaged screen. It is worth noting that the manufacturers have tried their best here. The screen is held firmly to the metal frame with double-sided tape. Therefore, you will have to slightly warm up the display with a hairdryer. This will help peel it off. The dismantling process starts from the bottom.

After that, you need to remove the traces of the tape from the frame, and then glue the new one in place of the old one. It is advisable to apply it in two layers, which will provide a stronger hold.

It's time to perform the actions for which, in fact, all this fuss is conceived. The new lenovo p780 display with touchscreen is glued into its rightful place. The result is a finished working panel. All that remains is to assemble the smartphone, following the instructions above, only in reverse order.

After the repair is completed, the user receives a completely working device, which is ready to serve faithfully to its owner.

As you can see, replacing the touchscreen with a lenovo is not particularly difficult.The main thing is to carefully perform each action so as not to harm the device and not damage its working elements. Each user should remember that all responsibility rests solely with him, therefore, in case of uncertainty in his own abilities, it is better to immediately take the smartphone to specialists. Although, it is never too late to do this.

a spatula from a set for depilation)))

P780 - KIT. After a six-month fall into a snowdrift and a year of finding the phone in the cup holder of the car while driving, I easily disassembled the phone using this video. Bottom line: 4 out of 7 propeller screws were severely weakened. the last screw that holds the battery cover was generally unscrewed (disassembled the phone due to extraneous noise when shaking). The antenna contact in the area of the cover darkened strongly compared to the other, but was in place. He unfastened it with a toothpick and then returned it to its place. I cleaned the contacts on the antenna cover with a wooden toothpick before assembling. I tightened more screws from the opposite side, well, which were still there. That's all for now. The phone has turned on and is still working. True, the untwisted screws upset me: So much for the Chinese IBM (Lenovo today)

Lenovo P780 smartphone review. Analysis of all the advantages, disadvantages, a detailed overview of the case, main characteristics, sound, camera, etc.

Doesn't catch the network

What to do if the phone stops catching the network? Or do you lose connection from time to time? Did you drop your phone and after that it won't catch the network? Was there a good signal before, but now it just isn't there? How to repair a female, at home and with improvised means? It's simple, follow the detailed instructions.

The Lenovo P780 has a weak fastening of the coaxial cable.Most often, this is the reason for the poor signal of the Lenovo p780 phone. Look at the photo, the coaxial cable is on the right, and is connected to the lower right corner of the motherboard, it often happens that during operation it simply leaves, and the reception becomes much worse, or even completely disappears. In addition to the coaxial cable, as well as other physical effects on the radio module, there may be other reasons that the phone has stopped catching the network.

First, check if you have an imei address. It's easy to check this, in the dialing menu, enter * # 06 #, and if everything is in order, your imei will be displayed.

Also, this phone model was produced for the domestic (Chinese) market, and for export to Europe. These phones can be easily distinguished by removing the back cover and looking at the inscriptions. I think it's not difficult to understand which one and for which market it was made. Yet Chinese on the left, European on the right. The differences are in the radio module, but still there is a firmware for the Chinese, and it does an excellent job in our networks.

The top (power button), as well as the side buttons (volume control) are separate parts of the case, they are small and often get lost, be attentive to the details of your device, it is extremely difficult to pick up such buttons from another phone.

Be careful when inserting the battery cover at the bottom of the smartphone, it goes under the body of the phone. If it is not installed correctly, the phone will not close. Will

Display replacement

Did you drop your phone and your display crashed? Screen not working? Touchscreen not working? Is it possible to get your phone repaired at home? Perhaps, but for this you will need special tools, such as a hair dryer, some manage to do this with a construction, but they do not observe the thermal profile and, as a result, burn the matrix. Therefore, we use a specialized one. Double-sided tape, it is better to use 3M, for gluing the display module. And of course a set of screwdrivers. As you can see in the photo, the cables are very delicate and easy to damage, as well as on the touchscreen harness, the controller is located, with which you should also be careful, it is much more dense than the cable, and with unwanted bends it is easy to damage it.

Please note that it is worth removing the display with goggles and doing it at the table, since small fragments of the screen fly in different directions, and it is better to warn yourself against this. Do not forget about coaxial antennas, connect them so that later you do not have to resort to the point above about poor network reception.

Replacing the battery (storage battery)

The reasons for replacing the battery can be different, you may have a reduced portable time with the device, or it swelled up and worked all its cycles. In any case, battery replacement is a demanded service and often becomes problematic in uninformed hands.