assembly (7)

We live in a world populated with electronics. Everywhere you go, you will find all sorts of electronic devices such as computers, phones, medical equipment......... the list goes on. However, all of these electronics have one thing in common called PCBs. To put it simply a PCB is an electrical component shaped like a flat board able to house multiple electric components such as diodes, transistors and manages the electrical flow throughout the circuit board. On a macro level, the PCB is the life force of every electronic device on Earth. Without it, they would cease to function.

This is why the manufacturing of these PCBs is a significant process. We call this PCB fabrication. This procedure has multiple industry-standard processes that are followed by most PCB manufacturer. This is especially the case when it comes to creating electronics as they serve a purpose in functioning and maintaining an electronic device.

Below are just a few examples of these:

#1. Design blueprint and design printing:
This is the first procedure in the fabrication process and involves planning of the overall layout of the PCB. This will include circuit diagrams and copper patterns which dictate the current flow direction. Fortunately, the process of PCB fabrication incentivizes neat placements of wires, labeling and spacing of the component places. This, in turn, promotes a circuit with wires in the form of conducting lines that move over the plane board and connect individual points in a circuit.

#2. Creation of substrate:
This is made from an insulating material like fiberglass that holds the structure of the PCB. It acts as the backbone of the PCB, holding the copper layers together. A benefit of using a substrate such as this, is the rigidity it offers and protects the circuit board from breaking making the circuit more stable and immune to movement. Less moving parts means fewer loose parts and fewer inconveniences for the user.

#3. Solder mask:
This is like the protective layer of the layered PCB. It's usually in green color but it is not limited to other color choices such as red or yellow. The main purpose of the solder masks is to protect the copper traces underneath from dust, corrosion and other impurities that can disrupt current flow.

#4. Silk screening:
This process involves the printing of information that is critical to the circuit board. This information includes things like logos, part numbers, symbols and markings. One advantage of this is that it makes repairing of damaged PCBs convenient. Since most symbols are standard across all circuit boards and part numbers make it easy to find the parts needed for repair, making it less complicated for technicians.

With all that said, it is worth knowing that there are other variations of PCB fabrications such as rigid-flex PCBs that incorporates both Rigid board and Flex technologies to create a very flexible version of PCBs. They are heavily used in devices such as pacemakers due to their very compact size and flexibility. With more and more demanding electronics being introduced in the market, this only extends the possibilities of more complex and compact PCBs to support such technologies.

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The common complaints of LG Google Nexus 4

  The LG Google Nexus 4 stands for a kind of spectacular Android experience. It possesses the quad-core processor, top-level display technology and smooth operating system. It indeed has some distinctive features. Curved glass front and full glass back design make it more shining. Furthermore, the screen design is more comfortable to operate for the users. Whereas, this smartphone has some small defections.


  1. Problem: Cracked glass

  Just like the iPhone 4 and 4S, the Nexus 4 has a glass back panel. It’s a stylish look, but there is obviously a risk that it will crack, especially if you drop it. There have been several reports of back cover cracks after knocks and drops.


  Get a case or a screen protector for the back. If you use a good Nexus 4 case or screen protector, you should be able to avoid any cracks in the first place. And if you’ve already got a crack on that back panel, a case could be used to hide it.


Send it back to LG for repair. You can contact LG or contact Google to arrange it.


  1. Problem: Camera cannot take a photo

If you’ve ever gone to take a photo with your Nexus 4 and tapped the blue circle to no avail, know that you’re not alone. There have been quite a few reports of the camera freezing and refusing to take a photo. Some people have also reported that the flash will not turn on. There isn’t a permanent fix for this yet.


(1) You can always reboot the phone by holding the Power button down and choosing Reboot. This will reset the camera and it should work as normal, but the problem may reoccur.

(2)You can switch to video mode for a second and take a short video and then switch back to the camera again and it should work as normal. Again, the problem might reoccur.


  1. Problem: Yellow tint on the screen

Some new Nexus 4 owners have reported a yellow tint or even a yellow blob on the display. It seems to be most commonly seen on the left side near the bottom and some users report it being more noticeable after gaming or after the device heats up. This has actually been a common issue for smartphones in general.


(1) You could try calibrating the screen, but the popularly suggested Faux Clock app requires you to root the device.

(2) Some people have suggested this is caused by the glue and that once it dries completely you won’t see the yellow tint anymore. You could wait a while and see if it resolves itself, but it really shouldn’t take more than a few days to disappear if that is the issue.

(3) Contact Google, LG, or your carrier/retailer to arrange a replacement.


  1. Problem: Proximity sensor turning the screen off in a call.

A few people have encountered an issue where they make a call and the screen turns itself off during the call and then it remains black when the call ends. This could be caused by a screen protector, in which case it’s easy to fix (See: solution 1). However, if the screen doesn’t turn off when you hold it up to your ear, or you continue to encounter problems with no screen protector on the phone, then you might have a hardware fault (See: solution 2).


(1)Remove your screen protector. If the screen protector doesn’t have a cutout for the proximity sensor, then you should get a different screen protector or cut a hole in your existing one.

(2)You should get a replacement phone from wherever you bought your Nexus 4.


The Nexus 4, made by LG to Google's specifications, runs a "pure Google" version of Android without any handset maker's alterations. When you own the LG Google Nexus 4, how to maximize the usage of it. It is a high-profile smartphone with a relatively lower price. Whereas, you will meet some problems when using. Here are several tips can help you run this smart device. When you are familiar with this guide, you will make the best use of the phone.


The LED light that flashes and lights up different colors to indicate various things can be customized. You can create different alerts for different notifications. You can also change your sounds and vibration patterns with the right app. One of the most popular options is Light Flow, but you’ll find plenty of others in the Play Store. You can set up specific alerts for emails, Facebook, calendar reminders, and lots more.


  As we all know, the Gorilla glass is tough, the LG Nexus 4 owns this one. It is easily susceptible to crack when dropped. It is worth investing in a screen digitizer replacement or a case. When you encounter the issues I mentioned before, please follow the situations and tips. A reliable supplier can be relied on. On website, it offers the highest quality LG Nexus 4 LCD digitizer assembly as well as a set of the free installation tool. By the way, this repair parts including the original LCD display, touch screen and flex cable.

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