Have TV Questions? Ask a TV Technician
Hello, my name is ***** ***** I'll assist you. I'm sorry you're having trouble with it. I need additional info to troubleshoot the issue.
1- How old is the TV and how long it have had the problem?2- Does screen glow/ show backlight or logo graphics appear?Thanks.
Thanks for the info, was there any storm/ lightning in area that might have caused this problem?
Sorry about it if you felt my info-requests were not appropriate but I have to gather info about TV symptoms to troubleshoot the problem. There was capacitors issue in few Samsung models a few years back but yours is newer model and there is no report about failing capacitors in this model.
Typing more info so please hold your replies...
In fact TV symptoms indicate possible failure of two boards, either power supply or main board.
Power supply board has other components as well along with capacitors and a repair kit is available at following supplier that contains few regulator chips etc...
If standby volts on power supply board are constant then it is more likely the main board failure that need to be replaced to resolve the issue.
There is another way around, jump the pin-2 to GND pin of connector of power supply board that goes to main board and replug TV power cord to turn On the power board to check rest of output volts of power supply board which will help to determine if it is working or not.
I trust my input will help you out. Please feel free to respond if you have any additional questions.A positive rating to answer would be greatly appreciated, please click on 5 star on this page then click submit/finish button so I can get credit on website for my work. If you don't see rating option then intimate here.Regards,Shahid.
There is tool calls capacitance meter to check/ test the capacitors which would cost you good money and visual check is just fine to see if capacitor looks OK then it would be fine.
Please unplug connector from power board that goes to main board. Remove screws on power board and turn it around (facing down) to get soldering side up, now you can jump the mentioned pins of connector, put some insulator sheet under the power board to avoid any contact to metal frame of TV that can cause short/ spark and plug the power cord in, jump of Power On and Ground pin will turn On the power supply and you can now test/ check output volts marked/ stamped on connector to see if 5V and 13V etc are available?
If so that means power board is working.
OK, no problem, take your time, I'll reply as soon as possible when come online because I'm going offline in few minutes for few hours.
I wanted to briefly follow up with you and see how the info worked, and see if that accomplished what you were looking to do!
Please reply back here if there is additional questions.