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 !

Thursday 7 March 2019

OPTOMA HD67 DLP PROJECTOR DISASSEMBLING AND FIRMWARE UPDATE

OPTOMA HD67 DLP projector Disassembling and Firmware update

Contents of this article

Firmware update procedure
Disassembling

OPTOMA HD67

Firmware Upgrade

System Firmware Upgrade

Equipment Needed
Software: (DDP 2431)
- DLP Composer Lite 9.2
- Firmware
- Library file (Library 9.2)
Hardware:
- Projector
- Power cord: 42.50115G001
- RS232 cable: 42.83618G001
- PC or Laptop

Firmware Upgrade Procedure
1. Set-up
- Hold on "POWER" button and plug in the power cord, the power LED will start to flash until the LED status goes to steady orange, the Temp LED and Lamp LED will light on red.
- Loosen the "POWER" button.
- Connect projector with PC by RS232 cable.
Note: The system fan and the lamp will not operated.

2. Check FW version.
- Re-plug in power cable, then restart the unit and get into the Service mode to check the firmware version.
(To get into Service mode, please press "Power", "Left", "Left" and "Menu" buttons sequentially.)

8051 Firmware Upgrade Procedure

Equipment Needed
Software: (DDP 2431- USB)
- Setup _NLINK_en
- Manley USB Driver_NLINK
- xxx_8051_xx.hex
Hardware:
- Projector
- Power cord: 42.50115G001
- USB cable: 42.00286G101
- NLINK Fixture
- PC or Laptop

USB Driver Upgrade
Procedure
1. Set-up
- Plug in the power cord, the power LED will light on red.
- Connect VGA Port of projector with NLINK Fixture .
- Connect NLINK Fixture with PC by USB cable.

8051 Firmware Upgrade
Procedure
1. Choose the right type of MCU
- "MCU Choose" picture will appear on the screen, select "N79A901R".
2. Program settings
- Ensure NLlNK Fixture and PC are securely connected: the indicator lights on green, and the state is “Connect” (as blue square).
- Select “Brownout Level 3.8V” (as green square).
- Select “Internel RC (11.0592MHZ)” (as green square).
- Click “Erase/Write(W)” to execute 8051 FW upgrade (as red circle).

3. Check 8051 FW version
- Turn on the unit and get into the service mode to check the 8051 FW version.
(To get into service mode, please press “Power”,“Left”, “Left” and “Menu” buttons sequentially.)

Disassembly Process

Equipment Needed & Product Overview
1. Screw Bit (+): 105
2. Screw Bit (+): 107
3. Screw Bit (-): 107
4. Hex Sleeves 5 mm
5. Tweezers
6. Projector
* Before you start: This process is protective level II. Operators should wear electrostatic chains.
* Note: - If you need to replace the main board, you have to record the lamp usage hour.

Disassemble Top Cover Module
1. Unscrew 2 screws (as red circle) from the Bottom Cover.
2. Unscrew 2 screws (as green circle) from the IO Cover .
3. Remove the Top Cover Module

Note: - When you remove the Top Cover, take care of the connector (as yellow square) which connected Main Board and Keypad Board Module, then unplug it from Keypad Board Module.
- Avoid damaging by pulling keypad FPC cable.
- Make sure the FPC cable plug into the correct ports when assembling it.

Rod Adjustment
1. Environment Adjustment
- The distance between the engine and the screen is 2.4 M.
- This process should be done at a dark environment (under 2 Lux).
2. Procedure Adjustment
- Change the screen to "white screen".
- Adjust the screws by using the rod on the engine module to readjust the image.
("screw 1" should be adjusted first, and then "screw 2". Adjust until the yellowish or bluish parts disappeared.)
3. Abnormal image inspection
- It should not have any abnormal color at the rim of the image by estimating through the eyes.
Note: - To avoid over adjusting the rod.
- After the opreation, please use the glue to fix the screws