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Samsung LN46A580P6F LCD HD TV It is not hooked up to a PC, just satellite. The screen is black and the power light is blinking continuously. It makes a "click" sound, ever minute or so, as if it is turning on. Can't get the tv to turn on or off. Any help would be appreciated. -thank you

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The problem is most likely your power supply. The easy way to check is to pull the back cover off (make sure the tv is unplugged) an check the capacitors on the power supply board. If they are bulged or appear to be leaking anything then replace them with the same rated and size capacitors. My LG did the same thing. Local repair shop said I would need over $80.00 in parts alone. I got them for less than $12 (I ordered extras) from Digi-key. Replaced the bad with good and tv works like brand new. If you are unsure if you can handle it do a youtube search for samsung or replacing a capacitor and you will see how easy it is to fix.

Posted on Mar 07, 2010

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I have the exact same tv and it is doing the exact same thing. I have only had it for about a year and 2 months, which means its out of samsung's warranty. Were you able to fix the problem?

Posted on Jan 04, 2010

I suspect you have to select the correct Source. Do this from the Source button on the remote, then go up and down the list til you see the one that works

Posted on Oct 19, 2008

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Samsung LN46A580P6FX
On the main board, IC104 (Part #SPX1587AT) is a 3.3VDC to 1.8VDC regulator. When this IC fails, the 1.8VDC drops substantially when the TV is turned on. After five minutes or so, the unit operates fine. This IC can be purchased from digikey for about $1.80.
Another fix is to attach a 1000uF 10 volts capacitor from ground to the DC source of this IC. I used a 1000uF 50V (overkill) for proof of concept. See attached pictures.
samsung-ln46a580p6f-lcd-hd-tv-turning-mqhl0awz5gnlgxm4bgzs3qu1-4-0.jpg

samsung-ln46a580p6f-lcd-hd-tv-turning-mqhl0awz5gnlgxm4bgzs3qu1-4-2.jpg

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Hi my name is Roety,
I can help you with your issue ,
Your Mittsubishi has a system the will cause the green light to blink for 70 seconds when first plugged in, if the green light never stops blinking it is either a power supply issue or a stuck keyboard button.
So do the test and reset it to see if the light stops blinking or not.



If I have helped you with your issue
If you have more questions you can still respond
I will reply asap
Thanks

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