Question about Samsung Televison & Video
Willing to send a picture of problem if there is any chance to repair it.
Samsung uses a power board with one capacitor. (Ignore the video and input boards.) Check high voltage across the capacitor - should be 390 to 400 volts DC. If not the capacitor needs to be changed. Samsung uses 100 uf rated at 450 volts. I replaced it with 370 uf rated at 400 volts. (Did not have a 450 volts lying around.)
Posted on Nov 25, 2017
Testimonial: "TCON card is broken"
Have several problems with either a bad LVDS cable from Main unit to the LCD controll bd. Sometimes the cable is just not connected properly. If you reseat this cable and the problem still exists you most likely have a bad LCD control bd.
Posted on Feb 03, 2008
Zdenko did an excellent job. Voltage regulators and
the capacitors on the main boards and in the power supplies are always
Some times you can narrow down the culprit buy purchasing a can of
freeze spray. Let the TV warm up and try freezing suspect components to
see if this causes a reaction. Thermal problems can often be found in
Of course, if you're not able or willing to replace components on the circuit boards, you can always replace the main board or power supply board after determining which is causing the problem. These parts should be available at your local Viewsonic service provider at a reasonable price.
Posted on Feb 14, 2008
I would like for you to tell me why my email message is on the right side of the screen with blue lines a white and yellow on the left. I do not have horizontal arror bar at the bottom to adjust the screen.
Posted on Feb 15, 2008
All plasma an lcd TV have boards that control vertical and horizontal output to their respective areas. They are connected to the screen by ribbon cables. If one of these boards fails all together, has a failed chip, a bad connection, or a bad ground somewhere it will result in a black line in the area of that board. A bad ribbon cable connection on the bottom will result in a vertical black bar though the screen. Many times resetting the connection will fix it, if the ribbon cable has been nicked there could be a severed connection. They an sometimes be fixed, but it is a pain. An yes I have done it, but the bar is gone. The same will happen if the chip that outputs to that area opens. The connectors are the first place to look paying close attention to the cable, they are extremely delicate so great care must be taken if you decide to tinker with em, the usually have lift locks that release them, but it is very easy to wreck em.
Posted on Aug 11, 2010
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