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 !

Monday, 8 April 2019

LG OPTIMUS 3D MAX – DISASSEMBLING PROCEDURE – HOW TO REMOVE THE CASE – HOW TO REMOVE THE BOARDS – HOW TO REPLACE THE LCD

LG Optimus 3D Max – Disassembling procedure – How to remove the case – How to Remove the boards – How to replace the LCD




LG Optimus 3D Max 

Tools required : Small philips/crosstip screwdriver

Tiny slotted screwdriver (to tear things apart)

Guitar pick (also to open things and tear them apart)

Remove the 3 screws on the bottom plate and the 8 screws on the upper part, all marked in red.

With the tiny screwdriver go under the bottom plate. Lift the plate and remove it.

Loosen up the frame. Remove it carefully with your hand.

We got to the SIM and SD card board and the motherboard. Start to unpin the relevant cables and pins marked in red.

Remove the SIM and SD card board. You removed the pin next to the SD card tray already and you can see the glue on the board on this picture. Also remove the (whole!) pin between the cameras, circled in red. Remove the pin shown at the bottom of the picture. Remove the board carefully.



Let's remove the motherboard now. Although already pointed out earlier on, the red marked pins are the ones you need to unpin before carefully removing the board. There are four pins marked on the top of the board and three in the lower part. Once you removed them, remove the board.

This is how the board should look, once it is succesfully removed.

Let's continue work at the lower part of the phone. Three things you need to loose or unpin: the sticker that kept the microUSB board in place, the second pin of the cable and the gold foil circled in red.

Now it is a little tricky to tell apart the flex cable that comes from the LCD and needs to be removed and the necessary flex cables that need to be left in place. I tried to mark the gold foil under the two board parts. Where you removed the first bit of gold foil should now be two connectors visible.

Use the guitar pick to detach the glass housing from the housing of the LCD screen. Be careful, you have to detach a lot of pins. Have a close look at the picture before you proceed.

You cannot fully detach the glass because the relevant flex cable has a pin that won't fit through the opening at the top of the phone. Open it carefully like shown in the picture.

This looks a little wild but actually isn't. The LCD sits tight in it's housing. Take the slotted screwdriver to lift it out of it's housing. The LCD is already broken. Anyway, let's stay careful. Because of the flex cable of the LCD it is not yet possible to remove it. Take a sharp small knife or a razor blade to cut those flex cables close to the LCD. Start where the upper red arrow starts and work your way down to the second arrow. Now you can remove the LCD. On the other side you can now identify the old flex cables that you just cut loose. You will have to remove those as well. Take a look at the next steps.

 Start to pull off the gold foil under the cable and don't tear it apart. Go slow! Remove the foil. You will see there is also a light blue foil as shown in the second picture. It's attached to the gold foil. Leave it attached! Once you detached the gold/blue foil, remove the flex cable that lies beneath the black foil that covers the battery compartment. In the first picture I marked red lines show where the flex cable lies. You have to tear it and it won't glue again. Once you removed the flex cable it looks a little bit like a scorpion there :)

Insert the new LCD. Work the flex cable through the designated openings. It's a little messy in the picture, but you will work out how to do it properly.

You worked the flex cable through it's designated opening? Then take the kept gold/blue foil and attach it to the new LCD flex cable like it was attached on the old one. The picture shows how it should like now. You have to fix the cable that goes through the battery compartment. Use duct tape, or, if not available do it like I did: use normal tape. Now you are done. I hope you took notes of how you disassembled the phone. You need to reassemble it now.


Network, supported bands and technologies TechnologyGSM / HSPA
2G bandsGSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 900 / 1900 / 2100
SpeedHSPA 21.1/5.76 Mbps
GPRSYes
EDGEYes
Release date First presented2012, February
StatusAvailable. Released 2012, May
Size and Dimensions Measurements126.8 x 67.4 x 9.6 mm (4.99 x 2.65 x 0.38 in)
Weight148 g (5.22 oz)
SIMMini-SIM
Display (type and size) Type3D LCD capacitive touchscreen, 16M colors
Size4.3 inches
Resolution480 x 800 pixels
ProtectionCorning Gorilla Glass 2
- LG 3D UI
System and processor information OSAndroid OS, v2.3 (Gingerbread), planned upgrade to v4.0 (Ice Cream Sandwich)
ChipsetTI OMAP 4430
Central processing unitDual-core 1.2 GHz Cortex-A9
Graphics processing unitPowerVR SGX540
Memory bank Slot for memory cardmicroSD, up to 32 GB
Built-in 1 GB RAM 8 GB (5.3 GB user available)
Camera PrimaryDual 5 MP, autofocus, LED flash, quality control
FeaturesStereoscopic photos & videos, geo-tagging
Video1080p@30fps (2D), 720p@30fps (3D), quality control
SecondaryVGA
Sound Different alarm typesVibration; MP3, WAV ringtones
Main speaker Yes
3.5mm jack Yes
Communication WLANWi-Fi 802.11 b/g/n, DLNA, hotspot
Bluetoothv3.0, A2DP, EDR
GPSYes, with A-GPS
NFCYes
RadioStereo FM radio ith Radio Data System
USBmicroUSB v2.0 (MHL TV-out)
Features SensorsAccelerometer, gyro, proximity sensor, compass
MessagingSMS (threaded view), MMS, Email, Push Email, IM
BrowserHTML5, Adobe Flash
JavaYes, via Java MIDP emulator
- MP4/DivX/XviD/H.264/WMV player - MP3/WAV/WMA/eAAC+ player - 3D/2D image/video editor - HD Converter (games, apps) - 2D to 3D apps converter - Document viewer/editor - Organizer - Voice memo/dial/commands - Predictive text input
Battery Li-Ion 1520 mAh battery
Stand-byUp to 450 h
Talk timeUp to 8 h