20 Most Recent Samsung LN55B650 55 in. LCD HDTV Questions & Answers

The power supply board it is dying and most likely causes by weak and dying capacitors parts bulges up or puffing up leaking.The power supply board,that the board where the power a/c cord plug into it.U have all the tools,understanding basic electronic also can do basic soldering work?Yes check the power supply board carefully replaced all dying to be dead capacitors parts or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

Sounds like your cable box is zoomed in, I run into this a lot when running service calls. On most cable provider's remotes there is an 'aspect' button next to or around the '0'. Try that and see if it helps you out at all :)

Check power supply for blown or burnt parts, also make visual check of all PCBs for any blown/burnt parts & any signs of overheating.

not a smart tv,

it is the screen driver on the back of the screen over heating it will fail and need to be replaced. you can get them on line or bay from around 15-65 pound. make sure you get the same number as the board off your tv even the (ver) number. hope this helps you.

Check its inter connection cables from T'Con to panel for any loose contact. Visit this link. It has details about these type of faults to many brand LCD TVs.

This problem has been answered a few while ago.

Can't predict, what might have been happened during a lightning. Your set need a through checkup. Contact any experienced service technician.

If you are not familiar with electronics, do not attempt to repair. Whether you suffer fatal electrical shock! Instead, contact the nearest service center.

The capacitors can fail and show no outward signs. You need a special meter to check them. Without a schematic and voltage test points it would be hit and miss trying to find the bad part without the right test equipment.

These are not meant to be repaired, just boards replaced.Follow if you are able the AC voltage into the set and then when it changes to DC follow that---confirm all voltages are present, a total dead set usually means something open not too far from the power cord.

"once in a while" suggests its not going to be found until it gets more frequent. A number of possible reasons for this as it is a bit vague.

The tvs shops will cost u like around $300-350 for a replacement of a refurbish board part that call the T-CON decodering board part and labors.This problems for tvs vertical colors happen to many LCD tvs,alway the causing by a dying to be dead board that call the T-CON decodering board.U can do some mechanical work like take thing aparts and putting it back together again?Yes.U can tries do this by take the tv aparts and by replacing the T-CON decodering board by ur self.The T-CON decodering sit in the middle at the bottom of the tv LCD screen panel.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish T-CON decodering board belong to ur tv Samsung model and make and replace the T-CON decodering board by ur self,U will save like around $100-200 for labors by not using the tvs shops.Because the refurbish T-CON decodering,will cost u like $100-150 plus shipping.U can do the labors ur self.

OK the cable box remote is the only one that can change channels in this case. because you are using the tuner in the cable box not the TV.
all you need the TV remote for is to turn the TV on and off and turn the sound up and down. if you used the cable input on the TV then the tv remote would be used to change the channels.

If the front panel does not even light up, then you do not enevn has the standby 5vdc working at all. Power supply module will be the first place to look.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on: Please see my basic troubleshooting guide here: http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums http://en.wikipedia.org/wiki/Capacitor_plague Parts: www.shopjimmy.com Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.

Oh dear You require a technician to replace either the "p" or the "A board inside the set. Do not attempt this yourself, if it's in warranty it should be covered by the guarantee.