I have a 2009 Sharp Aquos 55 inch HD tv. Will only play for a minute or two then shuts off and starts back up. Will turn on and off indefinitely until I shut it off with my remote. How do I fix it?

hi you looking at 1400 for just the screen if you had your tv less than a year then you are covered for one year by sharp so what i would do is call sharp and see if your covered on cracked screens

Call Sharp for warrenty repair.This problem very common in Sharp tv.Picture will come on turn power on/off button few times will work.But still under Wareenty call to Sharp to replaced the main Tuner Signal board.

you might try unplugging the TV and then plugging in again. It worked for me

You are in luck!..The units poowerboard is overheating and since you have it taken apart already this is the fix for you!...Check the popped capacitors in the metal box you find on the back of the actual screen inside the unit...This is a very common problem,m so I've helped many this way and wrote a general post on the how to's of diagnosing and repairing the problem, follow these steps and your tv ill be good as new for less than $5.00 before feb 5 th!! :P...Here it goes (please rate if this works out :D).....................The caps (capacitors) in the powerboard are going out. This is a very common problem in all class and price ranges of modern lcd and plasma tv's/ monitor's. I don't know if this problem has been like this for awhile or it just started, but either way, if the tv takes an abnormal amount of time to "warm" up then it most likely will go out all the way sometime in the (near) future. If you have a tiny bit of will and knowledge ypou can open the unit and get to the print board. Examine this for "popped" capacitors, they will have a buldging top instead of a flat one. Im gonna try to include a pic of them here, if i can get it this time, I've tried bfore lol. But you can google image a "popped" or "bad" capacitor and you would be able, with ease, to diagnose if you have any of these. Usually only one or two. Radioshack sells capacitors (couple anyway) for $1.59 each. MAKE SURE the replacement is of the SAME voltage or HIGHER, or you will be right back replacing those 2. Every capacitor has a negative pole marked with an (-) on the side of the capacitor(by one of the "legs", always puit the negative (-) "leg" of the new capacitor in the same hole in the printboard as where the previous negative (-) "leg" of the capacitor was ( a capacitor with the negative and positive "legs" put in backwards will result in the new piece "popping" as sson as you turn it on!!) make sure the "uf" rating (for example the most common popped capacitor is the 1000 uf) is the same as the one you are replacing. I needed 1000 uf, 105 c and 26v (volt) ratings for the 1 capacitor I needed to replace to fix my LG 19" lcd panel monitor I found by the trash that the light came on off, but it didn't come on. I replaced that capacitor with ; 1000uf, 85 c and 36 v (volts0...It works fine eventhough the volts and the temperature rating (36v and 85c) was not the same as the (26v(volt) and 105c ) capacitor I removed !! Further, I've replaced capacitors that had the celcius rating of 105 with the only ones Radioshack had, namely 85 c(celsius) they have been working great, but I'm not sure about any effect, nor have I heard or read (yet?) about that making an urgent difference. Many threads that I've read people have done the same, so we should be ok (my stuff has been running good for a while longer then most brand new ones!.............(all these ratings ; 'uf ' and 'c' etc are on the side of the capacitor you are replacing and on the side of the ones you are replacing them with)...For all this all you need is the cheapest solder gun u can find (I bought one for $7.99 at Radioshack), a camera (to take pictures as you go to remember how to reassemble the unit) and, once you have your materials, 20 minutes to replace 2 or 3 capacitors and you are good to go...Most monitors and tvs (lcd/plasma) I've seen you have to lay flat on the ground/bed/blanket etc, to work on (screen side down). Usually there are 2 or 3 screws (or a few more) to remove, then you will have to carefully (its comes off easily most times)insert a flat screwdriver inbetween the casing and gently pry it up as you go around the whole frame. Sometimes you have to remove the little washer arouind the cable input orso, just be gentle and you cant go wrong. Once insidet here will be a box with wires running to the sides etc...unplug, gently, these wires and open the box. Inside you will find 2 or 3 circuitboards, check them all for "popped" capacitors, replace, reassemble and plug it in....Have fun becoming an overnight tv mechanic lol!

If this has helped anyone (or not) then please rate, thank you!

This is an indication that the power supply cannot deal with something that is putting a load on it. It could also be the power supply itself. If you want to try and see what it is, take the set apart. But you must be very careful with a screen that big. Inside you will see the power board, the inverter, the t-con board and main and or control boards. The first thing to try is locate the inverter and unplug it from the power board. If the set turns on and remains on then the inverter is bad. If not then the power board is bad.

How many times per second does the POWER led blink? (dont worry about the OPC).

1x per second (constant, steady blink) = bad inverter/lamps
2x per second = bad power supply
3x per second = bad main board

You can buy the parts online and fix if yourself!!