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Jul 21, 2011 - Uploaded by daveshelbygt
Samsung PHLA... ... Samsung HL67A750A1F red DLP LED failure repair .... tv only works when plugged in. black screen, any suggestions?.
If your LCD TV or monitor has stopped working, or is displaying one of the following symptoms, then it's a candidate for some new capacitors
- Flickering screen
- Screen image disappears after several seconds
- Dim screen
- Slow start
- Power LED on, but no picture
- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life of your monitor or TV by several years.
Check the cables, connectors and connections.
If your TV, flatscreen, or monitor is more than 5 years old it is more like to have suffered a component failure.
Take it to a repair shop.
https://www.youtube.com/watch?v=TR2iWN6b-LY LCD TV Repair No Power Power Supply Common Symptoms Solutions How to...
i would recommend replacing y main and y upper and lower buffer boards based off your troubleshooting as they complete circuit. these samsung boards have an lj92 number on them that will cross to part number. if you find an lj41 number that number is vendor number for circuit board prior to components being placed on board. hope this helps. dan
Flashing LED << Back to Quick Fixes Page
If your set all of a sudden won't come on, e.g., the screen is blank, but the LED on
the under the screen next to the on/off switch keeps flashing, then there may be an
internal fault on the set that needs to be reset.
To force the reset, try this:
Unplug the set and wait a few seconds
Replug and see if the video returns
Whenever the set senses an internal fault through its monitoring circuitry, it
essentially shuts down the set. The flashing LED provides the indication that a
fault has been detected. Removing power to the set resets the monitoring
circuitry. When plugged back in, the circuitry again does a check of the
system. If it finds that there truly is a problem, then the set is shut down and the
LED will again flash.
Ok first lets start with the half screen and no lit screen . Samsung plasma panels (S42AX-YD01) HD V4. are really bad about the Y-board (upper,lower) buffers are really bad about getting hot and burining up. If u remove the back cover of TV u will see on the left side the Y-board (it will be marked in small letters) if u look and the rows of IC's with heatsinks on the buffers will be a dark yellow. Majority of the time if u remove the buffers. and look underneath them u will see the solder has melted from the board. U can replace the Y-board and buffers and the TV will work fine.
Next part if u have vertical lines in the panel. There is not much u can do as a repair. Only thing u can do is get panel replaced. because there is and IC that is burned up on the panel, and trust me there isn't anything u can do to fix it. If u want to see for yourself. After removing the back cover, remove SSB, and brackets holding PDP in place. at the bottom of TV there is a row of buffers marked E,F,G, ( i think) there is a long heat sink covering the IC's at the bottom connected to the bottom of PDP. As u can see without a $70k machine to change this there is not much u can do with it. Hope this helps.