Question about Televison & Video
Samsung LE40A656A1F. Tv turned itself off and now no pic or sound. Have changed the power board but no joy.. Fan spins and led flashes then goes off when switching on. Can't see any bad caps.
How many time the LED flashes at once time? Count it carefully. It is fault indications. Visit the site named 'Electro-help' for
more details. Click this link. View it in
"Timeslide" or "Flipcard" option, which can be selected
from the drop down box menu by the [Sidebar] tag, at the top left corner
of the display window. You can also
click the [Home] tab to see the latest updates. It will make search
easy. There are more than 1350 posts to different brand TVs now. Pull up older
posts there or make a search by typing in the brand name of the device in
the "Search Box", at the top right of the display window.
Posted on Dec 05, 2012
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Posted on Jan 02, 2017
If the power supply outputs are good! Then I would say the back light inverter is bad! If the screen stays black and does not come on.
Posted on Feb 28, 2009
Most likely the set has lost vertical sweep or the feedback from that circuit. This will shut the set down to prevent a horizontal line from burning the face of the CRT. This will have to be looked at by a technician.
Posted on Sep 11, 2009
Sorry... this is not a solution, but I wanted to speak directly to you and didn't know how else to communicate with you!! OMG!! My t.v. does the exact same thing!! The power issue and the sound going out after it has been on for a while!! Have you called Samsung yet? I hear they have horrible customer service. Maybe if we get enough people with the same problem we can get something done about it!!
Posted on Sep 30, 2009
Hi my name is Roety,
I can help you with your issue ,
Open and look for swollen capacitors
If you don't find any, some voltage check would be needed to isolate the bad board or panel
If I have helped you with your issue please click accept.
If you have more questions you can still respond until this post expires,
I will reply asap
Posted on Oct 31, 2009
Testimonial: "Thank you spot on"
SOURCE: Visio p42hd, no picture
Yes it does sound like the mainboard. But we have to confirm. I will see if there is a service manual for this unit in my collection but do you think you can safely work on it? Have you worked on electronics before? The last thing I want is you hurting yourself trying to fix it. HV circuits are not to be messed with unless you know about them.
Posted on Nov 03, 2010
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