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 !

Friday, 8 March 2019

SAMSUNG LE26A41B - LE32A41B SERVICE MODE TROUBLESHOOTING AND POWER SUPPLY CIRCUIT

SAMSUNG LE26A41B - LE32A41B

SERVICE MODE TROUBLESHOOTING AND POWER SUPPLY CIRCUIT

Factory Mode Adjustments
Entering Factory Mode
1. To enter “Service Mode” Press the remote -control keys in this sequence :
If you do not have Factory remote – control

POWER OFF > INFO > MENU > MUTE >POWER ON

- The buttons are active in the service mode.
1. Remote - Control Key : Power, Arrow Up, Arrow Down, Arrow Left Arrow Right, Menu, Enter, Number Key(0-9)
2. Function - Control Key : Power, CH +, CH -, VOL +, VOL -, Menu, TV/VIDEO(Enter)

White Balance Adjustment
1. In factory mode you can adjust the white balance.
2. As the adjustment and data values differ depending on input sources, different adjustments are requried for RF, PC/DVI modes.
3. Optimum condition data for each mode are saved as default values.
4. As the RF mode is applied with the same vlaues as for VIDEO and S-VIDEO, adjustment can be made in any of RF, VIDEO and S-VIDEO modes.

Conditions for Measurement
1. On the basis of toshiba ABL pattern : High Light level (57 IRE)
- INPUT SIGNAL GENERATOR : MSPG-925LTH
# Mode NO 2 : 750X480@60 Hz
NO 6 : 1280X720@60 Hz
NO 21 : 1024X768@60 Hz
# Pattern NO 85 : 16 Color Bar Pattern
NO 16 : Toshiba ABL Pattern
2. Optical measuring device : CA210 (FL)
Please use the MSPG-925 LTH generator for model LW26A33W.
Method of Adjustment
Adjust the basic level of DTV and PC input signals.
a) Set the input to the mode in which the adjustment will be made (PC).
# Input signal - PC Mode : Model #21 (1024*768 Mode), Pattern #16
b) Enter factory Calibration, confirm the ADC data (PC Mode Only).
# ADC default value

Adjust the white balance of RF, DTV and PC Modes.
a) Set the input to the mode in which the adjustment will be made (RF DTV PC).
# Input signal - VIDEO Mode : Model #1 (750*480 Mode), Pattern #16
- PC Mode : Model #21 (1024*768 Mode), Pattern #16
b) Enter factory color control, confirm the data.

Alignments and Adjustments

c) Adjust the low light. (Refer to table 1, 2 in adjustment position by mode)
- Adjust sub - Brightness to set the 'Y' value.
- Adjust red offset ('x') and blue offset ('y') to the color coordinates.
# Do not adjust green offset data.

d) Adjust the high light. (Refer to table 1, 2 in adjustment position by mode)
- Adjust red gain ('x') and blue gain ('y') to the color coordinates.
# Do not adjust the green gain and sub-contrast (Y) data.

MDIN-150
# Control the specify item that a output signals (RF, CVBS, S-VHS Modes) of MDIN-150 (IC405).
# This data can be changed without notice.
Test Pattern
# Use below test patters to demonstrate the image display of PW565 (IC602).
1) Luma Ramp (16 step)
2) Luma Ramp (128 Step)
3) White 16
4) White 240
5) Color Bar
6) RGB Ramp (32 Step)
Check sum
# XXXX : Displays the current check sum size of the MICOM. (Varies depending on program update) Reset
# Initializes the data in the MICOM. (Set to default value)
Use ‘Reset’ to restore adjustmints made in Factory Mode to the original settings.
T_NPL26PEU_0130 03/08/2004 18:34:23
# Displays the MICOM program version

How to use SW(FlashupgradNT) for LW26A33W Set program update
1. Store program practice file in new folder.
2. Connect Set and Jig Cable to execute Program Update.
3. After completing the JIG Cable connection, store Update practice program (hex file 3EA) in new folder. (guiR, romcode, factoryGui).
4. Click FlashupgradNT.exe icon 2 times and execute it. (Upgrader OSD screen is marked)

6. Click the “Flash” that is under right of OSD screen.
(if warning message comes out, Click the “Yes”(Y).)

7. After acting No.6, extract Set’s Power Cable and connect it again.
8. During acting No.7, program Update sledding is marked sequentially on OSD screen.
9. After Program Update completion, act NO.7 again.
10. Program Update is completed.

<Attachment: JIG Cable Connection Explain>
1. Connect with PC Pattern Generator’s output.
(Connect only when you want to see PC screen.)
2. Connect with JIG Output (15 pins) and PC Input (PC/DVI 24 pins) terminal.
3. Connect with COM Port1 of PC (9 Pins).
4. Connect 14V 4.5A Adaptor Cable.

Troubleshooting

No Power

Does proper DC 12V appear at C812, C813, C814? > Change a Assy PCB Power. (BN94-00443F)

Does proper DC A3.3V, A5V, A1.8V appear at C873, C861, C884? > Check a IC816, IC814, IC818. Change a main PCB ass'y. (BN94-00539A)

Does proper DC 5V, 3.3V, 2.5V, 9VS, A1.8V appear at C831, C835, C850, C895, C884? > Check a IC811, IC812, IC813, IC606, IC818. Change a main PCB ass'y. (BN94-00539A)

Does proper DC 33V, 1.2V_SNI_D, 1.2V_SNI_PLL, 3.3V_SNI_D, 3.3_SNI_PLL, +3.3V_MD, +2.5V_MD1, MDIN_APLL, MDIN_DPLL appeart at C827, C865, C878, C551, C570, C416, C429, C447, C451? > Check a IC812, IC815, IC817, FT522, FT512, FT406, FT407, FT410, FT411. Change a main PCB ass'y. (BN94-00539A)

No Video (Analog PC Signal)

Does the signal appear at #54, 48, 43 (R, G, B) of IC101? > Check IC101, PC cable. Change a PC cable. Change a main PCB ass'y (BN94-00539A).

Does the digital data appear at output of RA101~RA104, RA106, RA107? > Check a IC101. Change a main PCB ass'y (BN94-00539A).

Does the digital data appear at output of RA605, RA606, RA608, RA611, RA613, RA615? > Check a IC602, IC601. Change a main PCB ass'y (BN94-00539A).

Does the digital data appear at output of RA512, RA514, RA516, RA518, RA520, RA521? > Check a IC501. Change a main PCB ass'y (BN94-00539A).

Does the digital data appear at output of FT516~FT520? > Check a IC515. Change a main PCB ass'y (BN94-00539A).

No Video (DVI-Digital Signal)

Does the digital data appear at #80, #81, #85, #86, #90~#94 of IC102(Data, Clk +/-)? > Check a DVI-D cable.

Does the digital data appear at output of RA111~RA112, RA123~RA126? > Check a IC102 Change a main PCB ass'y (BN94-00549A).

Does the digital data appear at output of RA605~RA606, RA608, RA611, RA613, RA615? > Check a IC501. Change a main PCB ass'y (BN94-00549A).

Does the digital data appear at output of FT516~FT520? > Check a IC515. Change a main PCB ass'y (BN94-00549A).

Check a LVDS cable? Replacea lcd panel? (BN07-00121A)

No Sound

Does the signal appear at Pin 67 (Tuner Sound signal) and Pin 56, 57 (CH1_L, R Sound) and Pin 53, 54 (CH2_L, R Sound) of IC703 (MSP3410G)? > Check a connection harness and headphone jack.

Check the DC 8V, 9VS, 9V of IC703, IC701? > Check a IC809, IC606, IC811 and IC810. Change a main PCB ass'y (BN94-00549A).

Does the signal appear at L701 -L704 ? > Check a IC701. Change a main PCB ass'y (BN94-00549A).

Replace the speaker ass'y? (BN96-01015A(L), BN96- 01016(R))

POWER SUPPLY CIRCUIT