samsung LN26A330J1D

[kozan]

Hi, I need some advice on where to begin checking my LCD TV for problems.

The TV was off and plugged into the wall. There was a brief power outage that lasted a couple minutes. When the power came back on the TV's power LED was constantly blinking. The TV will not turn on. When i put my ear close to the back of the TV i can hear a very quiet high pitch sound that lasts a second and constantly repeats at a steady interval.

I had an LCD monitor with a similar problem with the high pitch repeating sound, the solution for that one was replacing a bunch of the caps. Some were obviously bad with bulging and others looked ok. That solved the problem with the monitor so I was wondering if the TV is experiencing the same thing.

Should i open up the TV and visually inspect the caps? I have a voltmeter and other basic tools and some experience with replacing components, however i still feel like a novice so any advice would be greatly appreciated. I can take pictures of the components if necessary.

[budm]

Re: samsung LN26A330J1D

Yes, same setup as the typical LCD monitors, it uses switching power supply with prone to have bad caps too.
Here is the 32" version of your TV with bad caps.
http://s807.photobucket.com/user/bud...?sort=3&page=1

[notallbad]

Re: samsung LN26A330J1D

Yes, first step is to remove rear panel and post pictures of the boards.
I assume the Tv is usually left plugged in and on standby when not in use? This is the first time it has been powered down for some time so the power outage is not the cause of the fault, just coincidence that it happened. The same would have happened if you had switched it off at the mains then switched back on some time later!

Most likely caps but don't eliminate dry joints just yet, possibly on transformer.

You could leave it on for a while to see if it comes on eventually, a few hours should do it.