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 !

Saturday, 2 May 2020

HAIER 40DR3505 LED TV CHASSIS MSD3393LU – HOW TO ENTER THE SERVICE MODE, HOW TO DISASSEMBLE, AMPLIFIER SCHEMATIC DIAGRAMS

 

How to disassemble the TV

Remove the Stand

Remove the Back Cabinet

Remove the power-main board.

Remove the Speaker

How to remove the stand

1. Lay down the TV set .
2. Remove the four screws from the stand which in the picture.
3. Remove the stand.

Remove the Remote Control Board And the Key Board



How to remove the back cabinet.

1. Remove the fifteen screws indicated with red circles.
2. Flip machine, panel side up.
3.Carefully raise the Front shell from bottom.


How to remove the power-main board.

1. Remove the six screws indicated with red circles.
2. Then remove the side metal board and down metal board.
3. Remove the four screws indicated with red circles.
4. Remove the power-main board.

How to remove the speaker

Remove the speaker directly

How to remove the remote control board and the key board

Connectors definition

LVDS Interface connector

Amplifier schematic

How to enter into Service Mode
The way to the factory mode menu:
Step 1: Press Menu,
Step 2: Press “8893”,
System will be into the factory mode menu when 2 steps above are done.
At the end of the main factory menu, you can see the edition of the software, like this" BUILD TIME 2014-01-21 23:17:21 VERSION v1.0 ”.

How to exit
If you want to exit this factory menu, please press the button ”Exit” on the remote.
System will be out the factory mode menu.

In factory mode menu, press up/down button to choose the up/down item, press right or OK button to the submenu. Press MENU button to go back.

GENERAL SETTING
1)Init Flash;
2)Uart Enable: Choose on or off in Uart Enable;
3)Dbg Message Enable: Choose on or off in Dbg Message Enable;
4)Test Pattern: Choose the Pattern picture;
5)Dynamic Contrast: Choose on or off in Dynamic Contrast;
6)Power On Mode: Choose on or off in Power On Mode;
7)Mirror Control: Choose on or off in Mirror Control;
8)Front End Status
9)Timer Test
10)SSC
11)Erase Flash
12)PQ Advance Debug: Choose on or off in PQ Advance Debug;
13)Factory remote:
Open or close the
Factory remote;

Panel Setting
1)LVDS Bit Mode: choose the Bit;
2)LVDS MAP: choose the MAP;
3)LVDS ODD/Even: choose ODD or Even;
4)Bcaklight:Adiust the
value of backlight;
5)Reset Panel Setting Date
6)6MX0 LVDS Map:
choose the 6MX0 LVDS MAP;
7)
6MX0 Channel: choose the 6MX0 Channel;
8)6MX0 Mirror:
choose the 6MX0 Mirror;
9)6MX0 Demo:
choose the 6MX0 Demo;
10)6MX0 Update.

Main board

1. Mainchip—MSD3393LU(U1)
2. Audio Amplifier
TPA3110D2PWPR (UA1)
3.Main Flash Memory—
GD25Q32BSIG (UF1)
4.DC/DC convertor 5V-1.8V for MSD3393LU (U1)—
LC1117CLTRAD (UL2)
5.voltage convertor 5V to 3.3V_STB —
LC1117CLTR33 (UL1)
6.voltage convertor 5V to 1.15V_STB —
LC3406CB5TR (UD1)
7.voltage convertor 5V to 3V for tuner—
LC1117CLTR33 (UT1)
8.Tuner —
SDCL1005CR33JTDF (RFT1)