Question about Toshiba 62HM95 62" HDTV
I have a 2 year old Samsung 50" dlp tv. I recently started having problems with vertical lines across the screen. (e.g. lll lll lll lll) They are in sets of 3 or 4 about an inch apart, with a larger space between each set when a movie has predominately dark colors. When the screen has mostly light colors, the lines are 1" apart across the whole screen (llllllllllll). It looks like the colors in the lines are offset from the colors on the rest of the screen, or shifted 1". They are there from the moment we turn it on until we turn it off, and they will not go away. We have unplugged everything and plugged it all back in. We have cleaned inside of the set. It doesn't make any noises that are out of the ordinary. We are not finding any solutions, although other people seem to be experiencing similar problems. It isn't under warranty, which doesn't matter when no one knows what is wrong! Samsung seems clueless on the problem. I have a two year old 60 inch DLP wit ten groups of eight vertical black lines, several weeks ago they would go away in just a few minuets but they are on all the time now! I have removed all input signals but the lines remain. Help!!!!! The set is a Toshiba 62HM95, Thanks
Here you go....this should solve your problems...
I think your lamp is not positioned correctly in the lamp cartridge or the cartridge is not fully seated. Remove your lamp cartridge and give it good firm push when you reseat it.
Posted on Feb 09, 2008
This is not a common problem. This is a vertical deflection problem - possibly a bad capacitor, bad connection, flyback/pumpup diode, or other component. If the symptoms change - particularly if they become less severe as the set warms up, a dried up electrolytic capacitor is most likely. If they get worse, it could be a bad semiconductor. Freeze spray or a heat gun may be useful in identifying the defective component.
It is often easiest to substitute a good capacitor for each electrolytic in the vertical output circuit. Look for bad connections (particularly to the deflection yoke), then consider replacing the vertical output IC or transistor(s).
Here is what I want you to do:
ONE: Do a hard reset (just to make sure there is nothing in the coding that is fowling things up). Unplug the power cord; leave it disconnected for 4 hours. That will restore everything to factory defaults when you power it back up.
TWO: Do the "whacking test" by banging your fist on a few strategic places to see if there are any cold solder joints or loose wires acting up inside the set.
THREE: If the above does not restore the picture, then there is probably something strange going on with the horizontal deflection system. Probably one of the main Integrated Circuits that process the video and the raster generation. I doubt if it is the convergence board.
FOUR: If you are brave and want to experiment, you can go into the service mode and reset or adjust the many parameters that are available there. However, you must be very careful to record everything you adjust so you can put it back where you found it if it does not do what you wanted it to. You can enter the service mode by following the procedure in this site:
If the above steps i suggested doesn't solves your problem then you will have to call a technician to get it repaired.
Please don't forget to rate me as fixya..
Posted on Feb 09, 2008
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