Question about Samsung LN32A550 32 in. LCD TV

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Tv turns off under 15 mins from being on. then black screen but yet the audio is still there

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You either lost the 24vdc power supply section that supply the power to the backlight inverter board, or he inverter board had shorted out.
If you are going to DIY and have proper tools, knowledge of electronics and know safety precaution then please read on:
Please see my basic troubleshooting guide here:
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Posted on Jul 13, 2010

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1 Answer

Tv goes black and can still hear sound, then it will shut off, then turn back on. will repeat after 5 mins


Hey iterry,

I have the same TV with what seems to be the same problem (screen off, audio remains until turning off->on); posted in several places (including here) but yet to receive a conclusive advice.

Please check the following:

- Does the screen turn off exactly 5 min. later - or when high brightness frames come up (could be 1...2...15 min. into the run;you can check that by pausing on a dark frame for a while)?

- Try altering the set to 4:3, low definition (did mine through my UVerse menus) as well as manually reducing the brightness settings; see if this gives you longer screen activity (I often manage for several hours, until some stupid commercial has a few seconds of a bright-white screen).

If we are indeed both in the same boat, my findings thus far are:
This is not a lamp issue (changed, no difference); not a color wheel issue (changed a couple of months before this ****); probably not a temperature issue - though I'm still checking that.

I'm hoping it's the ballast; will soon check and LYK. Good luck.

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1 Answer

Plays for 10-15 min.then pic.goes black,sounds stays on.


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RCA 32V550T Posessed


This tv is know to have circuits burn out

If you still have the warranty, use it

Otherwise a repair will cost about $150

580-634-0151 support number for rca

If you need anything else, please ask, thank you and I hope you fix your problem

Mar 27, 2008 | RCA 32V550T 32" TV

1 Answer

Still posessed!


These tv does have loose of audio problems im concern about looseing picture . Try unplugging tv for 5 minutes it will reset tv very common fix for audio. Tv that are less then a year old are sometimes covered under new warr call manufacture on that.
There is a microprocessor on these that lockup and when you unplug it. it resets it.

I have a tv shop and have helped customers get exchanges under a year especially if you complain


good luck i hpe i helped Thanks DOCTOR VIDEO

Dec 31, 2007 | RCA 32V550T 32" TV

1 Answer

Flashing light


this unit will have what is called ik protection wich means that the picture tubes are constantly monitor with this system all the way to the video procesor so the picture will desapear to a black screen even if the audio is ok,there may be a solution if contract a tech like me to adjust the bias so that compensates the drives to the pictures tubes since 1 or the 3 pt are week at this point.

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