Samsung DLP 41" TV, loses picture after about 15 minutes, but has sound. Also, if I change channels after it goes dark, from regular channel to a HDTV channel, the picture is upside down, and it stays like this if I change back to regular channel. Still, after about 10-15 minutes, the picture is dark, but the sound stays on.

Just do a hard reset to this set and check. Unplug the TV from AC mains wall socket, and re-plug it back after 10 minutes or so. This must make it a hard reset.

You may have a burnt out blacklight... You can fix it easy by having the tv on while it’s a bright picture than quickly unplugging it... or it would be best to get a new TV.

Hello, it sounds like your inverter board is goin out on the set, when you change channels if you notice on almost any TV the screen goes dark and the new channel appears, it sounds like you are not getting enough power out of the inverter board to power up the backlight enough to come on. This is why the sound remains because everything else works fine and the sound is connected to the main board.

my philips projection tv model number 50pl9126d/37 has a dark screen

If you are receving your HD via a cablebox, check the volume and audio settings in the box's menu. Some boxes have internal volume controls. If the level coming out of the box is below a certain level, you may experience low or poor sound quality. You can also check the audio settings to assure that they are set to the original settings.


michtech

try to reset the tv setting to its manufacturer settings and see if it fix the problem

is the picture clear when on? if yes, does the screen go black after a few seconds. if yes, sounds like you need a back light inverter!

Hi Barb,
Unfortunatly the problem you are asking about is a normal happening in our area with customers of mine that use rabbit ear or house mounted antennas ( Normally not cable or satellite dish). This problem sounds to me like a lack of signal strength on certain channels where your loosing your sound. Since your LCD TV is digital it requires a bit more signal strength to produce sound and picture. Maybe a better antenna, or redirection the antenna toward the station transmitter. Hope this helps.
Ed
NC Electronic
Mills, Wyoming

convergence ic problem