Hi, thanks for your solution. I tried to find the Mainboard part for my tv, however I found there were lots of variations. Could you tell me exactly what part I need to order to fix my tv. Replacing the mainboard will fix the black screen on my tv?? My tv was Sony KP46WT510. Thanks again, Lisa
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The tv is making loud noises like humming or motor noises and tv have strange colors flashes or black and white backgrond flashes.The tv Colors wheel it is dying and not spinning the right speed of it RMP speed any more.The tv colors wheel must have be replaced to solved this problems.Have no mechanicals skills hire a tv tech. to change the tv colors wheel because u have to take out alot of mechanical parts out before u can come to the tv colors wheel itself to replace it.
Hi , I try to share my experience about no picture strange sound in DLP models,
If that sound from behind TV like friction sound it mostly from the color wheel. Open rear cover, switch on your TV and listen , it it from angine not from speaker, that the color wheel problem. replace it.
Hi, This tv has two big black ICs as convergence output on deflection circuit board that are defective and causing problem in tv, IC number is STK392-110 replace both ICs to solve tv problem, also chekc for faded color big resistor nearby these ICs or those got burn mark, replace these resistors with same value, aslo check cold/ dry solder joints in deflection circuit board and resolder these joint/ connections. Thanks.
Ur tv the convergence board the 2 STK convergence ICS and some or all it resistors are dead.These parts are defective still have some life left,it will causes colors lines like RED,GREEN,BLUE misaligns,colors shadows,3D picture.When the 2 STK covergence ICS are totally dead it make this cricket noises and burning smell.The shop cost u $300-350 for parts and labors.
Hi,do you hear any strange noises? If you hear clicking or like wanting to turn on it could be the board that powers the lamp it's called the ballast.Here's the instructions to replace it :http://www.fixyourdlp.com/guides/samsung/bp47-00033a.php Have a blessed one!
This could be your video board going bad where your input cables are connected --OR-- the color wheel going bad. Hard to tell without a photo or reference though. Try swapping the cables first... and listen for any winding or whirring sounds.
replacing the colour wheel is possible, you will need to strip out the light engine from the TV, and open it up to gain access to the colour wheel assembly. A replacement colour wheel is about £250 from sagem, although you can buy an equivalent wheel from the US for about £80.
Check on the avforums site in the RPTV section, there are a lot of helpful people who have replaced their colour wheels successfully.
Logically proceed one source at a time = disconnect all,
then hook-up one at a time or hook-up seperately.FYI, the
RF coax , composite and s-video inputs all share the same
circuitry, whereas component is a whole seperate video
processing circuit, with another difference between 480P and
1080 I . Sounds like you have a 1080 I problem, which might
be a little sister board..............................T.