20 Most Recent Samsung PS42S5H 42 in. HD-Ready Plasma Television Questions & Answers

main power board may be bad or if there is flashing of the LED...contact samsung tech support

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/ Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

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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. If blinks continue without any pause, the main board is faulty.

0281,0288,0285. Try these codes. If you wish to get more details; check the sites linked here. It has set-up code list & set-up procedure to many popular brand remote controls. Common codes to check devices with different brand TVs are given, in the order of the device's brand name list in alphabetical order. Pull up older posts. Surf the site with patience. http://remotesearch.blogspot.com/ http://electrohelponline.blogspot.com/

Refer its user manual for details.

There is some short circuit inside one or more circuit boards inside your TV. It need a thorough check up It is a skilled work. If you wish to get more details, surf the following link. There are over two thousand and four hundred posts. All are related to television and other domestic electronic equipment service help. You can get a solution there. Type in the brand name to your device to its search box, can be located at the top right of the display window.http://electronicshelponline.blogspot.com/

Check to see if set or box is set to stereo--could be either.

could be a bad power supply board (very common problem), main board failure, bad LVDS cable. call 1-800-samsung for nearest service center.

Look on the power supply board for bad capacitors they will be swollen or vented on Top.
1000uf 16v 2200uf 10v 3300uf 10v 330uf 10v

You will need a small philips head screw driver and a Digital Volt Meter for this.

Unplug your set and take the back off
Plug the set back in and turn the set on
Now with your meter find the test point on the power supply that says VS. If you cannot find it, you can measure it at the plug of the board.
Make the sure the voltage matches the sticker that is on the panel. It will say VS. If it does not match, find the VS adjustment pod and adjust the voltage to match the sticker. If the voltage already matches, it is safe to raise 10 to 15 volts. If the picture starts to clear up, you are going the right way, if it gets worse, you need to adjust the other way. If it doesn't change at all, then odds are you have a bad panel.