REPAIRING AND NOT THROWING AWAY

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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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 !

Tuesday, 5 February 2019

SAMSUNG UN50EH5000FXZA – TROUBLESHOOTING – T'CON TROUBLESHOOT - 50INCH LED LCD TV

Samsung UN50EH5000FXZA – Troubleshooting – T'Con troubleshoot - 50Inch LED LCD TV

These instructions and other details are meant for Professional Service Personals only.  Not meant for a normal user.  A normal user, who is not sound in electronics can’t make any repair to this TV, or she/he can’t understand anything I’ve detailed here. 
FIRMWARE: 6/4/2012 Version 1012.3
2012 LED TV X9N Full HD Firmware (T-MX9FAUSC_1012.3)
“Makes better picture quality and solves sound noise with 'Auto Volume On'.” Avail on GSPN or Samsung.com
Circuit boards and part numbers
BN44-00499A:  SMPS (Power supply)
BN94-05764R:  Main Board
BN96-22213A:  T-Con
BN07-01140A:  LCD-Panel
BN96-22413L:  Jog Sw. & IR
AA59-00600A:  Remote Control
TROUBLESHOOTING VIDEO PROBLEMS
Verify Video Operation (2012 Models)
a. Boot Logo models with X10 Micro-Processor & above during power on. Boot Sound only (X9 MPU) during power on.
b. Customer Picture Test in user menu
c. “Display” (If display and Boot Logo & Customer Picture Test are OK the source or cables are first suspected . Then check for a defective input on the Main Board.)
d. Substitute with known good Source.  (external DVD or Signal Generator to check inputs on Main Board)
Using Test Patterns in Factory Mode
ENTER FACTORY MODE
1. Select an active source signal since Test Pattern may rely on signal source to appear or select TV Source mode.
Customer Remote                   Service Remote
2. Power Standby                   2. Power On
3. Mute, 182, Power On         3. Info, Test
4. Select SVC
5. Select Test Patterns
T-Con Troubleshooting
Click on the pictures to magnify
ON SCREEN FAILURE EXAMPLES
ALIGNMENTS
Check/Set Option Bytes: in Factory Mode (Must be performed after replacing Main Board. )
1. Enter Service mode
Standard Remote
1. Power OFF the TV
2. Press MUTE, 1 8 2, then POWER
Factory remote
1. Power the TV ON
2. Press INFO then FACTORY
2. Check/Perform latest Firmware Upgrade for all repairs.
3. Perform reset in Service Mode if Main board is replaced.
2012 LED Hybrid Disassembly cautions for Front Cover removal
To prevent the removal process from damaging the connections on the sides of the panel.
1. Place TV face up on cushioned table.
2. Cut and split the cover off at the top.
3. Carefully remove the Front Cover and insulated paper in Front of T-Con area.
4. Attach the Front Cover bottom first to the panel
5. Secure the plastic latch on the left and right side of the Front Cover as shown
6. Visually inspect the spacing between the Cover and the panel for equal clearance
7. Combine to stick the Front Cover Rib into the middle mold.
Function Control Troubleshooting
* Standby A3.3V on Function Connector, Pin 3.
* All Pins should read 3.3V before commands.
* Press, at Key 1, Pin 6. 3.3V to 0.0V DC
* Left, Right, Up, Down at Key 2, Pin 7.
Check specific voltages on chart.
UN**EH TV Start Up Sequence
Voltage chart (UN50EH5000FXZA)

Posted By: FRANK at 03:12
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