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 !

Friday, 1 February 2019

SAMSUNG UN40EH5000FXZA LED TV TROUBLESHOOTING- DISASSEMBLY, ALIGNMENTS

Samsung UN40EH5000FXZA LED TV Troubleshooting- Disassembly, alignments

Samsung 2012 Full LED (EH series) TV models.
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
Always check for latest updates
Parts and numbers
Disassembly
Place monitor face down on cushioned table.
Remove 4 screws from the stand.
Remove stand.
Remove the 1 screw of cover jack
Remove cover jack
Disconnect the function Assy. Cable
Remove the screws of rear-cover
Remove the rear cover
Not removing the connector can cause Damage to the PC/Connector.
Start Up Sequence
Main & SMPS boards
Function Control Troubleshooting
Five directional function controls:
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.
TROUBLESHOOTING VIDEO PROBLEMS
Verify Video Operation (2012 Models)
a. Boot Logo models with X10 Micro-Processor & above during power on. 
Boot Sound only (X9MPU) 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
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.
ON SCREEN FAILURE EXAMPLES
ALIGNMENTS
Check/Set Option Bytes: in Factory Model
(Must be performed after replacing Main Board. )
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
Check/Perform latest Firmware Upgrade for all repairs.
Perform reset in Service Mode if Main board is replaced.
Option bytes

Posted By: FRANK at 23:00
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