Master Electronics Repair !

Welcome to Master Electronics Repair! website.Here you will find:Service Modes, Circuit Diagrams,Service manuals, Firmware Update procedure, Disassemble procedure, Universal remote control setup codes, Troubleshooting, Diagnosing, Measuring, and more.... of many of LCD/LED TV/Displays,others various electronic apparates,trough many technical notes and tips/tricks to help repairing/fixing Troubles/ faults,for electrical technicians.This site helps you to save the Earth from electronic waste!

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.

How to use the site:

- If you landed here via any Search Engine, you will get what you searched for and you can search more using the search this blog feature provided by Google. You can visit more posts scrolling the left blog archive of all posts of the month/year,
or you can click on the main photo-page to start from the main page. Doing so it starts from the most recent post to the older post simple clicking on the Older Post button on the bottom of each page after reading , post after post.

You can even visit all posts, time to time, when reaching the bottom end of each page and click on the Older Post button.

- If you arrived here at the main page via bookmark you can visit all the site scrolling the left blog archive of all posts of the month/year pointing were you want , or more simple You can even visit all blog posts, from newer to older, clicking at the end of each bottom page on the Older Post button.
So you can see all the blog/site content surfing all pages in it.

- The search this blog feature provided by Google is a real search engine. If you're pointing particular things it will search IT for you; or you can place a brand name in the search query at your choice and visit all results page by page. It's useful since the content of the site is very large.

Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !

..............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, 27 February 2019

LENOVO THINKPAD 8 – HOW TO TEST THE AC ADAPTER – HOW TO RESET THE TABLET TO FACTORY DEFAULT – HOW TO MAKE RECOVERY MEDIA – HOW TO DISASSEMBLE THINKPAD 8 – TABLETS REPAIR AND SERVICE

Lenovo thinkpad 8 – How to test the AC adapter – How to reset the tablet to factory default – How to make recovery media – How to Disassemble thinkpad 8 – Tablets repair and service

Category: Tablet Repair and Service

Contents of this article

How to Reset the tablet
How to Check the AC Adapter voltage
How to remove the battery

Lenovo thinkpad 8

Checking the ac power adapter
When you use the ac adapter to charge the tablet but no power is charged, see the instructions in this topic to check the ac adapter.
To check the ac adapter, do the following:
1. Disconnect the power cord from the tablet.
2. Measure the output voltage at the plug of the power cord. Refer to the following illustration:

Note: If Pin 2 is connected to the ground, it can not charge.

3. If the voltage is not correct, replace the power cord.
4. If the voltage is acceptable, replace the system board.

Refreshing Lenovo tablet
If your tablet does not perform well and the problem might be caused by a recently installed program, you can refresh your tablet without losing your personal files or changing your settings.
Attention: If you refresh your tablet, the programs that came with your tablet and the programs that you installed from Windows Store will be reinstalled, but all other programs will be removed.
To refresh your tablet, do the following:
1. Move your pointer to the top-right or bottom-right corner of the screen to bring up the charms. Tap Settings > Change PC settings > Update and recovery > Recovery.
2. In the Refresh your PC without affecting your files section, tap Get started.
3. Follow the instructions on the screen to refresh your tablet.

Resetting your tablet to the factory default settings
If you want to recycle your tablet or just start over, you can reset your tablet to the factory default settings. Resetting the tablet will reinstall the operating system, reinstall all the programs that came with your tablet, and reset all the settings to the factory default settings.
Attention: If you reset the tablet to the factory default settings, all your personal files and settings will be deleted. To avoid data loss, make a backup copy of all the data that you want to keep.
To reset your tablet to the factory default settings, do the following:
1. Move your pointer to the top-right or bottom-right corner of the screen to bring up the charms. Tap Settings > Change PC settings > Update and recovery > Recovery.
2. In the Remove everything and reinstall Windows section, tap Get started. Then tap Next to confirm the operation.
3. Depending on your needs, do one of the following:
To perform a quick format, tap Just remove my files to start the process. The process will take several minutes.

Creating and using recovery media
You can create recovery media as backups for the Windows recovery environment and the Windows recovery image. If you cannot start the tablet, you can use recovery media to troubleshoot and fix the problems on your tablet.
It is recommended that you create recovery media as early as possible. Once you create recovery media, keep them in a safe place and do not use them to store other data.
Creating recovery media
To create recovery media, you need a USB drive with at least 16 GB of storage. The required USB capacity depends on the size of the recovery image.
Attention: Creating recovery media will delete anything stored on the USB drive. To avoid data loss, make a backup copy of all the data that you want to keep.
To create recovery media, do the following:
Note: Ensure that your tablet is connected to ac power.
1. Move your pointer to the top-right or bottom-right corner of the screen to bring up the charms, and tap Search.
2. Typerecovery in the Search field and tap the Search button. Then tap Create a recovery drive.
3. Tap Yes in the User Account Control window to allow the Recovery Media Creator program to start.
4. Ensure that you select the Copy the recovery partition from the PC to the recovery drive. option. Then tap Next.

Important: If you clear the Copy the recovery partition from the PC to the recovery drive. option, you will create recovery media without the recovery partition content. You still can start the tablet from the recovery media, but you might be unable to recover your tablet if the recovery partition on your tablet is damaged.
5. Connect a proper USB drive then tap Next.
6. Tap Create in the Recovery Drive window. The creation of the recovery media starts.
7. When the creation of the recovery media finishes, do one of the following:
To keep the recovery partition on your tablet, tap Finish.
To delete the recovery partition on your tablet, tap Delete the recovery partition.
Attention: If you delete the recovery partition on your tablet, do keep the recovery media in a safe place. The Windows recovery image will not be stored in your tablet anymore, and you will need the recovery media to refresh or reset your tablet.
8. Remove the USB drive. The recovery media are created successfully.
Using recovery media
If you cannot start your tablet, or if you cannot start the Windows recovery image on your tablet, use recovery media to recover your tablet. To use recovery media, do the following:
Note: Ensure that your tablet is connected to ac power.
1. Press the power button and the volume-up button at the same time when you turn on the tablet.
2. The ThinkPad Tablet Setup program main menu opens.
3. Tap Startup.
4. In the Boot submenu, drag the recovery drive to the first place to select it as the boot device.
5. Save configuration changes and restart the tablet.
6. Following the instructions on the screen to recover the tablet.

DISASSEMBLING PROCEDURE

Back cover assembly

Use a plastic pry tool to detach the latches of the back cover assembly 3.

Built-in battery

Removal steps of the built-in battery

Remove the connector 1 , Then remove the screws 2

Remove the battery in the direction arrow 3