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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..............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, 16 February 2019

AOC D26W931 D32W931 LC32W053 LC42H053 TROUBLESHOOTING

AOC D26W931 D32W931 LC32W053 LC42H053  Troubleshooting

NO POWER


No Power


Power LED off


Check Ac power input and the power is On?
No
Power ON
Yes


Power board output = 5V?
No
Replace the power board.
Yes


Check the IR board





Repalce the IR board


No


Replace Main Board.


CAN'T START.


Can’t start.  LED Red.


Power board output = 24V?
No
Replace power board
Yes


Check the Power Key under the control.
Yes
Replace key board.
No


Check IR receiver is normal?


No


Replace main board.


No


Replace the Power Board.





ABNORMAL DISPLAY


Abnormal display


Check the source
No
Reset the source.
Yes



Enter factory mode to do ‘EEPROM’ initial & Reset.


No



Check the main board.
No
Replace the main board.
Yes



Check the LVDS cable.
No
Replace the LVDS cable.
Yes



Check the panel


No


Replace the panel.





NO DISPLAY

No display. [LED blue]





Check TV is under control and power On/Off by remote control and power key?

No
Replace main board.


Yes






Check the back light is ON?




Yes


No



Check LVDS cable.
No
Check the B/L signal is available?
No 
Replace Main board


Reinsert or replace the LVDS cable.
Yes



Yes

Power board output = 24V?



Panel Vcc 5V?
No
No
Replace the power board.



Replace main board.
Yes



Yes

Replace the Panel.



Replace the Panel




SOUND PROBLEM
No sound or sound abnormal.

Check the audio source connection and the TV system are correct?
No
Reinstall the audio cable of change the TV system
Yes


Check the TV is muted, adjust the volume of enter the menu rest?


No


Enter Factory Mode to do Reset.


No


Check the cable between the speakers and main board is OK?
No
Replace the cable
Yes


Check the speaker resistance value is in spec.
No
Replace speaker
Yes


Replace main board.


REMOTE CONTROL MALFUNCTION
Remote control  malfunction

Check the remote control battery is not properly placed or no power?
Yes
Replace battery
No


Use the other remote controls.
Yes
Replace remote control.
No


Whether the IR board is abnormal?
Yes
Replace the IR board.
No


Replace the main board.








OSD CAN'T WORK NORMALLY
OSD is unstable or can’t work 
normally

Key board connected properly?
No
Reconnect the key board.
Yes


Buttons are OK?
No
Replace the button function.
Yes


Keyboard is OK?
No
Replace the key board.
Yes


Enter factory mode to do Reset.


No


Replace the main board.
Posted By: FRANK at 05:19
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