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Samsung UE40B7020 40 in. LED TV Questions & Answers
Blue of black screen...how do I fix this?
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.
10/11/2016 12:35:14 PM •
Samsung...
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Answered
on Oct 11, 2016
Doesn't turn on
Fault with the main power supply regulator 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://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.
2/19/2015 1:08:10 PM •
Samsung...
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Answered
on Feb 19, 2015
Technika x22/14c Screen goes Black after 2 seconds
David, I would put my money on a new power supply board. , be sure u get the #'s off the board itself. there are many such boards and they look alike but they might not work. Just be careful they still carry a Charge and will Zap u .. even thought the Caps don't look blown it could be just one of the legs on the square Cap. just replace the whole board..
2/19/2015 2:40:32 AM •
Samsung...
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Answered
on Feb 19, 2015
Blue screen on Samsung LED TV? Is it the power board?
if the TV powers on and stays on.. sounds like you might be on the wrong video stream, (make sure u are using the same input as u are using the output on your cable box, satellite box, etc. if you are using HDMI , use your remote for the TV and find the Source or Input button and try each of the video streams that are listed.
2/6/2015 7:33:06 PM •
Samsung...
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Answered
on Feb 06, 2015
LED TV screen goes white from time to time
You might want to make sure the HDMI cable is fully plugged at both ends of the cable and try a new HDMI cable. A marginal cable will occasionally drop out the picture.
11/25/2014 11:17:15 PM •
Samsung...
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Answered
on Nov 25, 2014
Samsung f6400 red light blinking
These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience.
8/15/2014 12:57:07 PM •
Samsung...
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Answered
on Aug 15, 2014
Ive got sound but no video
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/
8/12/2014 11:19:21 AM •
Samsung...
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Answered
on Aug 12, 2014
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