Hardware Teardown - Coby Kyros 7015/7016

Coby Kyros 7015 and 7016 have same hardware, main difference is Android version.

A friend of mine has consulted me regarding one of his children's two Coby Kyros 7016 MID which don't detect previously installled games. I have installed ClockworkMod Recovery and upgraded these tablet's rom to CyanogenMod 7 before in the past. Upon further investigation, I found out that the internal memory and sd card has not been mounted.  Playing around with /system files including volds.fstab and some other various mounting methods using terminal emulator (in the device) and adb (using PC and Mac), I was out of luck. I finally decided that the problem most probably is hardware-related.

Opening up the tablet required moderate effort. No screws were used and the back cover was only held tightly by clips all around. Using my trusty old credit card, I pried it open, starting from the edge where the ports are located. Inching my way until all edges are free from the clips.

Once the back cover is free, I carefully removed 4 screws holding the logic board to the front case below (red circles). Unhook the digitizer from the clip (yellow rectangle) and resistive lcd screen flex cable (blue rectangle).

Carefully free the ports from the case then gently fold the logic board over the battery.

THE CULPRIT
Cheap devices came from cheap manufacturing process obviously. Wave soldering done properly should not have resulted in this. Because of mechanical stresses, the sd card slot module has come off the solder points in the logic board! 

Using my smd rework station, I tried to solder back the pins to the logic board using ample amount of flux. Reassembled. Unfortunately, it still does not work! So I had to repeat the process but this time soldering using a fine tip iron, thin solder, magnifying glass and lots of light. Pin by pin, I soldered manually including the 4 tabs at the edges of the sd card slot module for better support from mechanical stresses in the future. 
Reassemble by reversing the process. Finish!

EXTRAS
Since I have accessed the internals of the Coby Kyros 7016, I indulged myself of taking pictures while I'm at it.
The Battery
2450mAh 3.7v






Multi Core Module
  • The Processor: Telechips TCC8902 (500-800Mhz) RISC type 32-bit 65nm
  • GPU: ARM Mali200 
  • RAM: Hynix 256MB
  • Memory: 2x Samsung 2Gb
  • Atheros Wifi Chip
  • free USB port (1) 
Wifi Antenna (gold plate) attached to logic board by gray wire




7 comments:

  1. Nice blog. Sir, do you have a shop or do you take in repair jobs? If yes, where, when, and how can I reach you? I have a device identical to your eken T01A. I played around with it and it appears that I broke the full USB port. It can no longer accept and detect any device. Thinking that it may be a software problem only, I reflashed it with the latest rom from eken. Unfortunately, the port still did not work. I'm thinking that it is a hardware problem already. Is there a fix for it? Or more directly, can you fix it? Suggestions? Tnx in advance. :-)

    ReplyDelete
  2. I recently came across your blog and have been reading along. I thought I would leave my first
    comment. I dont know what to say except that I have enjoyed reading. Nice blog.
    I will keep visiting this blog very often.
    flights to Umrah
    cheap flight to jeddah
    flights to jeddah
    umrah jeddah flights
    umrah flights from London
    cheap flights to umrah

    ReplyDelete
  3. Very nice job repairing that Coby tablet :). I would probably wreck my tablet if I attempted anything similar ;).

    ReplyDelete
  4. Nice Job Indeed! My wifey acquired a 7016 Coby for free from Posh-mart! :) I have discovered that due to a switch in polarities (I think is the culprit) one of the capacitors,resistors, dueflucky things has burnt. It is located right next to the directly above the Memory Card Slot right about where the 1 is on the mother board and just left of where the board displays DC5VIN1. Is this repairable and if so where would I locate the part. Thank you for your time and again great job on the pictures and explanation! And also really nice job on pointing out that if we continue to outsource our work America is going to become your memory card slot. DETACHED!!

    ReplyDelete
  5. You have a really great site! I love how useful a lot of your topics are. I was wondering if you would consider mentioning my website on your next post? I’ll be sure to mention yours on my blog in return. Thanks!

    Sage
    sage.harman123 at gmail.com

    smartphone

    ReplyDelete
  6. We know many type of tablet manufacturer company launch latest model in tablet market, all tablet pc are available at best price and amazing features. Currently One new Indian tablet launch by Dein technology that offer cheapest branded tablet with free gifts, discounted prices and calling facilities. The new product launch Devante 3D storm and smart calling both are very good looking and slim tablet. Devante is first Indian calling tablet available at all store, malls and local market. We provide best home delivery for our online customer. goedkope tablet covers

    ReplyDelete