Originally Posted by bryanviper
Originally Posted by kevin_y
Is my LN46A550 dying? This is what it sometimes does during power-up
. It shows a discolored picture, turns itself off, and comes back on with the correct picture. Usually this happens when it has been off for a long time (10-24 hours). The problems seems to happen to all types of connections, from HDMI to antenna. I bought the TV in Fall 2008. It hasn't really had a problem until recently. This is the model with the "S" panel, which I believe is the good one.
Probably the common Bad capacitor issue. I replaced most of the capacitors on my motherboard due to the tv just clicking and not turning on. From what I have read Samsung used 10V capacitors on a 12v line. So when I replaced mine I got some good quality brand name capacitors that were rated for 25v. I basically tried to increase whatever capacitor I could and replaced them with good quality brand name ones even if they looked fine.
Its been close to a year now and its working great. Its time for you to open the tv and take a good look at the capacitors.
Just want to report that I finally had my TV fixed by this Ebay merchant
. The capacitors inside my TV (on the brown circuit board) were actually fine, showing no bulging whatsoever (photo
). So the merchant had me send him the green circuit board instead, the one with all the A/V ins and outs, and said he would replace some "SMD components" on it. From sending him the board to my receiving it took one week.
I bought the TV in Fall 2008 and first had the power on/power off problem in Fall 2014. I had heard that Samsung had once offered free on-site repair for this particular problem
, but at that time my TV was fine. When I got the problem, Samsung had already stopped offering the service (I believe it ended Fall of 2013, a full year before I started having the problem).
My first workaround was turning on the TV with no video feed for 2 minutes, then putting the video feed back on, and it would be fine. Then 2 min became 5 min, then 10, ... and a year later, over 30 minutes. That was when I sought professional repair. I followed this guide
on how to open up the TV to get the circuit board. It was not difficult.