Question about Samsung HCN4226W 42" Rear Projection HDTV-Ready Television

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TV KEEPS SHUTTING ON & OFF BY ITSELF. REPLACED CONVERGENCE BOARD HEAR AUDIO BUT NO VISUAL

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  • Samsung Master
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U also need to replace the video ic inverter board too.

Posted on Aug 18, 2009

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1 Answer

Tv keeps shutting itself off


If the main board have damaged, this kind of fault can occur.

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Yamaha RX-V1600 shutting off


try to fasten screws at back of the unit ,
may sound like BS but if amp board don`t have good ground connection it can go in protection mode

happend to me on RX-V592

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Good picture no sound


Hello
Check the speakers first. Get this set connected to an external audio amplifier device, such ans an amplifier or so, with its audio out connections at the back of the TV with audio in connections on the back of the amp, and listen whether you can see sound from the external amp. If you can hear sound from the external amp, and not with the internal speakers of your tv, either the speakers may have damaged or it audio output IC had got damaged. if so you have to replace the IC or should replace the audio card o your tV, if the IC is not available at local electronic spare part market.
If you can't hear any audio by external amp, as it has been connected as stated earlier, the mother board [main board] of your tv has the trouble. There is no repair to this digital board, and it should be replaced as card basis. OK.

Feb 08, 2012 | Vizio 42 in. LCD TV

2 Answers

Tv keeps shutting off and going back on by itself


Cold solder joint in the power-supply board, once it heats up it expands and shuts off. Open it up and start scanning the board for defects and hit them with a hot soldering iron and a dab of solder.

Cheers

May 05, 2010 | Samsung LN-S4051D 40 in. LCD Television

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Replaced lamp in toshiba 46hm84. still get


Hi,do you hear any strange noises? If you hear clicking or like wanting to turn on it could be the board that powers the lamp it's called the ballast.Here's the instructions to replace it :http://www.fixyourdlp.com/guides/samsung/bp47-00033a.php The ballast is the most common failure besides the lamp.The ballast is the one that displays the lamp indicator if it's not able to power bulb or if bulb is not responding.Have a blessed one!

Mar 30, 2010 | Toshiba TheaterWide 46HM84 46" Rear...

1 Answer

My tv keeps shutting of after I replaced the lamp.


Please recheck new lamp is placed in its position correctly and lamp cover is well seated.
Hope that will help to fix TV.

Sep 18, 2009 | Samsung Televison & Video

3 Answers

Toshiba TN55X81 Wont turn on but I hear clicking


Pull the three connectors to the yokes on the convergence board. If the set powers up, it's a good chance the STK392-110's need to be replaced. I fixed one today, and it has been running for 6 hours now.
-Dan

Jun 15, 2008 | Toshiba TN55X81 55" Rear Projection...

1 Answer

No picture


It's probably convergence. Take the back off and locate the convergence board. On this unit it's up and to the left looking into the back of the unit - the board is on a separate heat sink mounted to a cross rail. Locate the two wire plug going into that board that is marked on the board +/-20v and unplug it. Now plug the Tv back in and try to power it up. If it comes up with good audio that board needs to be repaired. The two amps on it need to be replaced and both the return and line resistors out front of those amps need to be tested and replaced as needed.
My shop charges $225.00 to rebuild this board which should give you some idea about what you would pay..
Hope this helps!
Bill

Apr 16, 2008 | Samsung HCN4226W 42" Rear Projection...

1 Answer

Re: green convergence


Check B+ feed resistors next to IC's for visual burn damage,
identify by board location, exact value important.......
What STK part # was used ? price ? quality ?................T.

Jan 02, 2008 | Hitachi 43FDX01B TV

1 Answer

Hitachi 46ux11kf/ keeps shutting off


Convergence amp maybe out. These are the big STK's on the video board that stands by a heatsink. THis set is bad for going out. You also can tell by checking L.E.D lights in back of set do they all come on or do some come on and go off?

Jul 05, 2007 | Hitachi 46BX01B 46" Rear Projection...

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