20 Most Recent Samsung LN52A650A LCD TV Questions & Answers

Replace the 3 ceramic fuses on the Power Supply Board and you should be good to go.

Please change the T-CON board, if it did not fix the problem, you may have a defective LCD Panel.

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary. Before going further; try a hard reset first. If it does not help you, replace the main digital board. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; visit the site linked here.

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://electro-medical.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....

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary. Before going further; try a hard reset first. If it does not help you, replace the main digital board. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; visit the site linked here.

Fault to the main power supply regulator section. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electro-medical.blogspot.com/ http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

It is possible that the conductivity of a power diode is diminished after a period of time causing the unit to receive just under the needed current to function. Test the resistance of internal components after periods of tine or seek manufactures assistance.

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

Since you have the unit apart, and may not own the equipment to test the board, all you can do is change parts and see if the symptom goes away. This is the way of the home repairman. If your main goal is saving money, you can find a like unit on eBay with a bad panel or backlight issue for less than the price of the suspect components. Just swap parts and fix your set, then junk or resell the remaining parts.

Hi Steve The power board to your TV is working fine now. If you're determined to make experiments with it; just carry on!! Replace the boards. one after another, till the fault is rectified.

Horizontal line problem is usually related with T'Con board itself. In rare cases, with panel too. There is details about this, at one or tow among the posts with the blog I've pointed out to you. I do clearly recall that, I've seen it there. It is a site, has more than 400 indexed pages on Google. a helpful one too. I've pointed out to many others, and most of them did find solutions to their problem there. I do get their responses too; by Fixya. Just understand, an LCD TV is working mearly by some capacitors, and some users trusted as it is. Contact any service technician. It will be the best.

You can use a Sewell HDMI 1x2 Splitter or more if you like. Go to www.sewelldirect.com and look up HDMI splitters, they have what you need.

The audio output section circuit should be troubleshooted. In most cased, the audio baord need replacement. Check its speaker too.

thde problem of your samsung lcd is the lcd panel,..you try to replace (T-CON) timing control

you're looking at about $120, are you sure it's the main board that is bad?

Happened to me. I called Samsung and they sent a serviceman out. I can't remember what the problem part was called but it was a problem they evidently knew about and fixed it for free...the first time. It hasn't done it again (knock on wood)...so you should call them if it's a Samsung TV.