REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Wednesday, 10 April 2019

XIAOMI REDMI 2 – DISASSEMBLING PROCEDURE – HOW TO REPLACE THE MOTHER BOARD

Xiaomi Redmi 2 – Disassembling procedure – How to replace the Mother board

Use the flat end of the spudger to remove the back panel from the mid-frame and front body.
Insert your finger into the curved opening of the mid-frame.
Lift the battery and remove.
Remove the SIM and/or memory cards if present.
Remove twelve 3.4 mm Phillips #000 screws securing the mid-frame to the front body.
Slide the spudger between the mid frame and front body, gradually prying the two bodies apart as you slide the spudger around the perimeter of the phone.
Remove the 3.4 mm Phillips #000 screw that holds the motherboard to the front body.
Keep this screw separate from the initial twelve.
Using one prong of the tweezers, pry back the brown clip located on top of the LCD ribbon connector.
Using one prong of the tweezers, pry the ribbon clip away from the motherboard.
Lift and hinge the motherboard with your fingers.
Using one prong of the tweezers, lift and pry back the metal clip positioned over the front proximity sensor ribbon connector.
Lift the motherboard out of the front cover and set aside.
Remove the 2.9 mm Phillips #000 screw that holds the PCB circuit board to the screen assembly.
Using the tweezers, lift the antenna connector from the PCB circuit board.
Do not remove the PCB circuit board at this time.
Using the nylon or metal spudger, gently pry back the top of the PCB circuit board from the screen assembly.
Using the nylon or metal spudger, pry back the silver clip covering the ribbon connector.

Carefully lift the PCB circuit board from the screen assembly and set aside. The screen assembly is pictured to the left of the circuit board and is now ready for repair or replacement.