Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.
SOURCE: TV blank, sound okay, picture comes for half a second while switching channels
i am a technician and i too have this issue. if any of you can get a schematic and service notes, send them to trae3@live .com and i WILL find the problem and report to each of you. i cant get any help from sears all i need is to speak with a technician who actually works on these things, get the paperwork and then i am sure it is a matter of a module swap. any info will help us!
SOURCE: how hard it is to replace by yourself main board Samsung LN-T4065
You need to do some more diagnosing of the problem. If you get sound and change channels take a bright flashlight and place it again the screen. Look for an image around the edge of the flashlight.
If you see an image that means the LCD controller board (TCON) is probably good.
The problem is probably one of three causes;
1) Inverter board is bad
2) CCFT (cold cathode fluorescent light) are bad.
3) Power to the inverter board is bad. You can also check the connectors.
SOURCE: 42" LG Plasma tv, no picture - black screen, but have sound.
Most a likely a problem with your Y-Sustain board which will then not drive the screen giving a black picture. The fuse on the board may be open circuit & need replaced but most likely you will need to have the sustain board replaced.
SOURCE: I get sound but no picture. The
There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.
SOURCE: Picture great then goes black
has to do with the main board like the other guy said go to www.shopjimmy.com way cheap and its that one cuz was told to me by the manufacturer you call tv repair man they give you all this **** it can be the power supply or the main board bring it so we can tell you just to get the money for checking it out go to this site get it but be real careful with the screen you can do it your self i did mines aint no science.
44 views
Usually answered in minutes!
×