Question about Samsung LN-S2738D 27 in. HDTV LCD Television
When I turn on my LN-S2738D Samsung HDTV it starts off in total blackness, then slowly starts flickering a picture. Usually this lasts for 15 minutes (or longer if the tv has been used in the past few days) .. until the flickering is gone. I've read about the power supply problems with other Samsung models, but mine is from 2007 which is before the 'class action' suit for 46 and 55 inch model tvs. The solution for those models was to clip a certain jumper on the power supply. Is a similar fix possible with my unit? Or, could my capacitors be going bad? Or, is it something else? Thanks in advance for any help or guidance.
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Posted on Jan 02, 2017
SOURCE: Samsung LN-S4041DX 40 in LCD TV
Hi. You can try to go into service mode and reset the LCDTV to Factory Default. This will clear out all buffer over run's and any software related issues. It may fix the problem or it may not. If this doesnt fix the problem than you need to have a qualified Technician to look at it. The problem is in the AV circuit board, a technician who is qualified to repair electronics at circuit board level should be able to repair this problem rather quickly and inexpensively. Most technicians who do not have the expertise in repairing cicuit boards to component level would rather replace the whole AV board than repair it and this will be rather expensive.So talk to the repair shop before you drop the TV off.
Be very careful when accessing service mode. I suggest to write down all information in all areas before proceeding to a factory reset. If you do not record all values correclty you run the chance of not being able to use the TV again. To go into Factory Service mode, use the original remote and in this sequence push POWER OFF-MUTE-1-8-2-Power ON, the set will turn on and enter service mode, if you hit all previous keys correctly. If it doesnt try again. When you are done hit POWER OFF and this will exit service mode and save the data.
Posted on Jan 28, 2009
there is a soloenoid type switch that fires the TV up this has failoed. its like a neon or fluoresecent tube that has a faulty starter switch light tries and tries but never quite makes it when it does get going it has that purple smear in the tube. that is the simple explanation for your problem. part is about $60 labor is unkinown as i am not in USA but looking at some of the rip off charges I am glad i dont have the bill
Posted on Aug 20, 2009
you will need a tech to isolate the fault. could be power supply board or the main board but I suspect it is the lcd panel itself that is failing.
Posted on Oct 30, 2009
I have a solution. My Samsung plasma had the same problem with the bottom half of the screen being black. Follow these directions and it will not cost you a dime, just some time. I took the back panel of the tv. I found the lower buffer board on the left hand side. I disconnect all the ribbon cables. Use an air cleaner to spray out any dust on the ribbon connection and the board. I connect the ribbons back to the board. My plasma is now as good as new. If you have issue with the top portion, do the same with the upper buffer board. I was going to buy a new tv but I'm glad I gave this a shot first. It's been almost a month and it's still working fine. Hope this helps and hope it saves you some money.
Posted on Nov 14, 2009
Yes, it is very easy to repair. Solder iron wattage should be at least 300 w.
The PSB is the center Board (towards left) after you remove the back off the TV. Remove the shield that covers the Boards and remove Board from TV with the 6-7 screws. Replace capacitors CM852 & CM853; 2200ufd 25volts.
Good Luck, big IRISH.
Posted on Dec 28, 2009
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