Picture has rolled up leaving a black bar on the bottom
On a 4 year old Samsung 30" hdtv. I have the power off problem, but when I do get it to stay on there is a wide, black bar at the bottom of the picture which is really the picture moved up toward the top of the screen. It starts out wide and gets smaller throughout the day and yesterday it disappeared altogether. Today there is a small black bar at the bottom remaining. In watching a football game with the score being shown in a top corner, the team which is on the top has its name cut off. These would seem to be two unrelated problems, but when the tv is first turned on before it turns itself off, the picture is whole and complete.
An expert who has achieved level 3 by getting 1000 points
An expert that got 10 achievements.
An expert that got 5 achievements.
An expert who has answered 1,000 questions.
Re: picture has rolled up leaving a black bar on the...
Greeeting from Belize you are having a problem either with cold solder or a problem in the power supply those lines are hum bars due to a defected filter cap.resolder your power supply if that does not solve the problem then you replace the power supply you can get a power supply kit from www.dalbani.com in florida.good luck.also make check in the vertical section if you cannot do it your self take it to a qualified tech to resolve your problem this should cost you about $75.00. to get it fix.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
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.
Try your cable box on a different tv set and also try connecting the cable directly into the t.v, if that makes no difference then your tv set may have a power supply problem that was caused by an a.c line surge during that storm.
Remove front bottom panel behind it is a small black control box top controls are focus controls for R/G/B and Bottom 3 controls are your screen drives adjust one at a time turn off G/B adjust red first,then Do Green and Blue fter adjusting focu to each tube leave them set then adjust screen drive turn color off adjust RGB for a Black and white picture get as close as you can then turn color back If after doing this you still have blurry looking picture look down into Tubes you should be able to see picture clearly in each one if you cannot see picture then projection Fluid need to be changed out. Call Mats 1-800-628-1118.
ONE OF MY CLIENTS HAS THE SAME PROBLEM WITH THE SAME MODEL I REPLACED THE LOWER Y BUFFER BOARD AFTER PLAYING FOR ABOUT TWO DAYS AT THE REPAIRE CENTER THE TV WORKED WELL USUALLY IT TOOK ABOUT TWO HOURES FOR THE PROBLEM TO APPEAR .
When replacing the light tunnel, the new one must be installed exactly as the old one came out. This can only be done by marking the screws and backing them our exactly 3 or 4 revolutions and then tightening the new one the exact same revolutions. When looking into the old tunnel you should have been able to see the mirror that came unglued to ensure that was the problem. The problem now can be corrected by loosening the screws on the dmd bd and manually adusting the dmd position in association of how it hits the dlp chip.