20 Most Recent Samsung HL-R7178W 71" HDTV Questions & Answers

Hello... I would start by getting the correct lamp for the TV, and I would advise getting an original equipment lamp. The lamps and ballasts are matched by wattage and operating voltage, and a mis-match will at best cause early lamp failure. The sound you are hearing could be the ballast trying to ignite a bad lamp caused by a mis-match. I hope this helps!

If you wish to get some details; visit the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/

Hi You have a ground loop problem. Rolling shaded bars are the classic sign of a ground loop. Your TV & AV gear are likely not on the same
ground level as the input cable line. The cable line is likely floating
to a different ground. But this is not hard to fix.

If u hear a whining sound before it starts cutting off then its the colorwheel,partstore.com

Hi,Yes your problem sounds like the DMD board.This is how it works: http://electronics.howstuffworks.com/dlp1.htm Basically the light of the lamp goes through a tunnel that carries a color wheel(rotating disc with a gamma of colors that creates the colors on your tv)then the light of the lamp goes through the DMD board which is a chip composed of around 2 million pixels that creates the images and colors.When it starts to fail it will create black bars,pixelation,color distortion or white dots on screens. Here's a video that will help you find where the DMd chip is located : http://www.youtube.com/watch?v=0jr_9A5Xd2Q Have a blessed one!

sounds like this could be an issue with the color wheel or in the dmd board that is what controls the color but with the vibrating I would start with the color wheel look for any cracks or broken parts of it

HLS5679W has power supply issues. Two capacitors need to be replaced as Samsung put in units of the wrong voltage...
CM860 and CS860 need to be at least 2000mfd/25vdc radial (both leads come from one end) electrolytic capacitors. It is recommended to have a service tech do this you'll need to pull the power supply out of the set. Parts are cheap (Radio Shack for about $2.99 or so each) but you must be able to solder to replace...
Good luck!

First, need to check the power bar(if you use).
then. if don't use power bar, need to check the power board.

The place you purchase the set from has to help you or guide you in the right direction so you get the set service, if they dont tell them you will bring the setback to them for a refund or exchange,the manufacture is the responsible one but stores also have something to do.

remove the back cover u will see the fans one for the ballast and the other for the lamp

Sounds like a door switch is not making proper contact--or has been damaged. Check the lamp door switch and see if it is properly seated and the pin on the door is hitting the leaf of the switch.

You need a color wheel--common on these sets. Get a real phillips bulb and you should be set for awhile. The cheap generic bulbs are fine to get you through a few MONTHS....but NOT much longer. . An E22H-120/132 watt lamp is correct--and if you can replace just the bulb-(NOT hard at all to do) it will save you a LOT of money.

just from personal exp the easiest thing to do may fix or at least make it better. if u see puffed and leaky caps on power supply replace capacitors. if really dusty clean. both previously mentioned and both helped me. my tv was completely dead and replacing caps got it to power back up and work. it takes two trys to come on but works great so far. then i cleaned every nook and cranny with a small vacuum hose and different size/angle brushes that could be attached to hose. i only took out the psb board with caps and didnt touch anything in there that i could mess up. just cleaning helped enhance the colors. right now this is the best picture ive had on a tv and it was completly dead when i got it.

Check all your input cables & be sure they are snug on both ends, also check all your wiring connections inside the TV. you may have not gotten something back correctly or properly.

EURO STAR LCD TV 32" BLANK PROBLEM