Question about Samsung Televison & Video
I ALREADY CHANGED THE POWER SUPPLY THE MODEL IS LN-S4041D
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Posted on Jan 02, 2017
You should contact Samsung service to know if the internal setup for the picture sizing was not adjusted properly at the factory.
Take care that some of these sets have a user zoom mode. Maybe it is in the zoom mode. Check in your instruction manual before calling for service support.
Posted on Apr 12, 2008
SOURCE: tv wont turn on
Mine was doing that then it quit even turning on too so I replaced the 4 Capacitors today on the power supply board that had bulged up on the top 3 had split open they where on the top right corner of the board where the ribbon jumps from the power board to the main board with ones from Jameco Part Number 606521 they worked perfect but make sure you put them in with the correct polarity easy to do just keep an eye on it. Very simple repair and took me about 30 min to take itapart solder on the new ones and put it back together all for under $10.
Posted on Jul 09, 2009
SOURCE: sound no picture
If an LCD TV has sound but no picture do the following:
Use the source button to ensure that source is not set to the wrong input.
Try unplugging power cord for ten minutes, to ensure it is not a setting problem.
Check all the video cables at the back of TV.
Check Light /Color settings.
If problem persist and does not depend on external receiver or settings, then it is likely an internal fault.
If it has sound but no picture then one of the following parts is faulty, and must be tested and replaced:
Theinverter is the high voltage board that provides variable power to thebacklight lamp. This is the most common. When inverter is faulty youcan get no picture, or a very dim picture that can only be seen bypointing a torch light with a 45 degree angle on the LCD surface fromvery near distance.
The inverter must be tested by reading voltages with a multimeter.
The LCD ribbon cable/LCD display and connectors.
Thisis quite uncommon, but happens. If the TV had been hit or moved the LCDcable may have slipped out, or the LCD connector may be damaged.
The LCD controller board.
Thisis the board that controls the video signal, it is difficult to test,as there is need to read determined values on IC pins. To test thisboard you need to purchase a service manual and follow thetroubleshooting diagrams on service manual.
Input/Output Signal boards.
This are the boards where youconnect the video and audio cables, if a signal board is defective,then you may get no picture on particular inputs located on faultyboard.
If under warranty contact the manufacturer ringing the number on the user manual.
If you want to repair at your own expenses, just locate any good qualified repairer.
If you want to DIY you find parts here,
All: Appliance parts, electronics parts & more from PartStore.com
Encompass Parts Distribution
LCD/Plasma Electronic Replacement Parts: Plasma & LCD TVs, Appliances |
Posted on Jul 18, 2009
SOURCE: my samsung 40
This tv has issues with 4 capacitors. These caps can be replaced for about $10. They are located at the top right corner of the power supply. They will read 10v,1000uF. I had the same problem, then I replaced them wit 16v,1000uF capacitors. And presto tv!
Posted on Jul 19, 2009
Look for bad caps (leaking/bulging top) in the power supply module. Make sure to replace them with good quality caps such as PANASONIC FM/FC series.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Please see my basic troubleshooting guide here:
Posted on Jul 01, 2010
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