Ns-42p650a11, mfg may 2011 half of picture top half horizontal show clear regular tv the bottom half is a black screen with sound . this brand didnt last long. What parts do i need to test these out and figure out what is the problem could u help me thanks.
Hello Danyell,
According to the model number you provided you have a 42" Insignia plasma TV. The problem you reported with having just a blank black screen on the lower half is due to a bad lower buffer board or also called a lower scan board. The part number is LJ92-01739C and if you Google this part number you can find these online and also find some sites that may show a short video on how to replace it. Price of this board looks to be about $35. Also of note is you will find that this part number is a Samsung part number which means your Insignia TV has a Samsung plasma panel in it so the associated circuit boards will also be Samsung parts.
SOURCE: Insignia NS-32LCD has sound but 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 |
SOURCE: No picture, no sound, does light the insignia sign. Why?
In about 90% of the time the power supply is defective if the TV fails to power ON.
I repair these power supplies, if you need further assistance write to [email protected]
SOURCE: Insignia NS-LCD26-09 TV Screen Bright
Hello,
I am wondering if this happens with every source input. Please compare the Video, YUV, and Ant inputs. This will tell you if the issue is related to a specific curcuit.
SOURCE: Insignia NS-LTDVD26 TV screen will cut out after
Issues of this type can generally only be resolved by repairs. Service can be obtained by carrying your TV in to the place of purchase.
SOURCE: insignia ns lcd37hd 09 picture no sound
bad Main board could cause this too. Unplug the three wires from the PWS to the mainbd and try it.
Visit the site named 'Electro-help' for more
details. Click this link.
View it in 'Flip
card' option, which can be selected from the drop down box menu by the
[Sidebar] tag, at the top left corner of the display window. It will make search easy. Some times, the ads attached with each
posts, both at the right and bottom, might help you to find the availability of
spare parts. There are more than 850
posts to different brand TVs now.
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