How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Steven Your Own Question

Steven
Steven, Technician
Category: TV
Satisfied Customers: 1270
Experience:  Licensed TV repair technician in the US with over 30 experience in the US.
59014109
Type Your TV Question Here...
Steven is online now

I have a Samsung LE37B551A 37" 1080P LCD TVA tv engineer

Customer Question

I have a Samsung LE37B551A 37" 1080P LCD TV

A tv engineer has confirmed today I have a good signal.
the booster unit I use is good .
A second tv in the conservatory linked to booster has good picture,
the tv works ok thru a digital receiver/recorder.
but on its own the picture breaks up and freezes and the sound becomes garbled.
the engineer says there is a fault with the tv?

IT IS LESS THAN 4 YEARS OLD WHICH I FIND DISAPPOINTNG.
IS IS FIXABLE AND /OR EXPENSIVE TO FIX????
Submitted: 3 years ago.
Category: TV
Expert:  TV Tech1 replied 3 years ago.

Hello, I'm TV Tech1 and I'll be working with you to identify and help you resolve your problem.

 

That's definitely noise and signal affecting the TV set. If the signal level at the TV set's aerial cable didn't fluctuate, then the TV's tuner is causing your problem since you see the signal level vary and the error level change quite dramatically.

 

There is a bar-coded sticker on the main board that I recommend you look at. You should find one of these two numbers on that sticker with either the first number or that second number listed on it. The dash may or may not show up on it.

BN41-01167B OR BN94-02668H OR

BN4101167B OR BN9402668H

 

graphic

 

To get the back cover off, lay the TV face down on a pad, like a blanket, let the stand hang over the edge of your table. Remove all the screws around the outer edge of the rear cover, and the screws around the input jacks, and any screws found in the center, then you can lift the rear cover up and off to reveal that main board and look for the BN number on it.

 

 

 

 

Customer: replied 3 years ago.

Thank you for your initial reply.


I am a pensioner and have never opened the back of a television in my life, so a bit apprehensive about doing so, may ask someone else, however:


If I open tv and identify the bar-coded numbers on the sticker what will this tell?


Do you think it may be the tuner?


Is this an expensive part to replace and easily obtainable for this model?


Is it cost justifiable? ( tv is nearly 4 years old and cost £600)


 


I get a good picture/sound playing thru my digital receiver/recorder meantime.


Would you believe, this morning , the picture and sound thru the tv is fine with a good signal and no bit error level when I do a signal test.( self diagnosis /signal test , strength 88)


But I'm sure it will revert back to the problem I have been experiencing unless you tell me differently.


As you can no doubt tell , based on what you tell me I may have to call a television engineer back....


But it depends on the cost aspect.( repair vs replace tv)


Would you know if Samsung have experienced problems with this model and this fault and I should approach them?


 


Regards, and I look forward to your reply.

Expert:  TV Tech1 replied 3 years ago.

If I open tv and identify the bar-coded numbers on the sticker what will this tell?

 

Samsung has always marked their boards with the part number and version of that board in your TV set. As a Samsung technician, we always get that number to verify which board is required to repair your TV set.

 

Now, I am assuming the engineer you hired did check the signal right where the TV connects to the aerial's cable and did find the signal strength to be within specifications, and that's why he told you the TV is the problem.

 

In that case, the tuner is the only problem that can cause your symptoms of fluctuating signal levels and varying error levels too.

 

The main power supply does convert your 220 Volts AC to much lower voltages. You'll find most TVs only use 5, 12, and maybe 24 Volts maximum on all the boards, so simply disconnecting the Mains cable will render the TV safe to repair.

 

At four years old, and the warranty being only 1 year, Samsung would not extend the warranty. They usually do that only if it's within a month of warranty expiration.

 

This site is a provider for both the USA and the UK and I believe our exchange rate is $1.60 to £1.00 --

 

http://www.shopjimmy.com/samsung-bn94-02668m-main-board-for-le40b550a5wxxu.htm

 

It does look like the TV's rear cover should be removed and the correct part number retrieved from that sticker I mentioned. Notice the M at the end of the BN94-02668M ? That's the version changes. If your TV isn't wall mounted, you can simply remove the connections from the TV, unplug the AC cord on the TV, and just remove all the screws from the back cover and it will lift off. An engineer would likely charge

£60 to replace it for you.

 

 

What Customers are Saying:

 
 
 
  • My Expert answered my question promptly and he resolved the issue totally. This is a great service. I am so glad I found it I will definitely use the service again if needed. One Happy Customer
< Previous | Next >
  • My Expert answered my question promptly and he resolved the issue totally. This is a great service. I am so glad I found it I will definitely use the service again if needed. One Happy Customer
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C.
 
 
 

Meet The Experts:

 
 
 
  • Steven

    Steven

    Technician

    Satisfied Customers:

    1270
    Licensed TV repair technician in the US with over 30 experience in the US.
< Last | Next >
  • http://ww2.justanswer.com/uploads/ST/steven.benoit/2011-4-1_194735_untitled1.64x64.jpg Steven's Avatar

    Steven

    Technician

    Satisfied Customers:

    1270
    Licensed TV repair technician in the US with over 30 experience in the US.
  • http://ww2.justanswer.com/uploads/europro/2009-7-31_232635_DSC02497.JPG euro-pro llc's Avatar

    euro-pro llc

    Technician

    Satisfied Customers:

    1069
    20 years in TV repair,certified by all major brands- Sony,Samsung, LG,Toshiba, Panasonic, RCA,
  • http://ww2.justanswer.com/uploads/mistersony/2010-12-13_235638_conrad2.jpg Conrad's Avatar

    Conrad

    Technician

    Satisfied Customers:

    942
    Training on many types of consumer electronics, training on Sony Samsung and JVC
  • http://ww2.justanswer.com/uploads/AL/alr3d/2012-5-3_143712_14.64x64.jpg alr3d's Avatar

    alr3d

    Technician

    Satisfied Customers:

    764
    tv repair
  • http://ww2.justanswer.com/uploads/PlasmaLCDPro/2009-09-01_011602_techavatar.JPG Flatpanel Guru's Avatar

    Flatpanel Guru

    Lead Technician HD

    Satisfied Customers:

    692
    Factory Trained and Certified on PLASMA, HDTV, LCD, and Bose. Authorized Servicer, 15yrs Exp.
  • http://ww2.justanswer.com/uploads/frep420/2009-06-13_215917_j.jpg Jeff the TV Guy's Avatar

    Jeff the TV Guy

    Technician

    Satisfied Customers:

    691
    10 years expeience in consumer electronics. 3 years experience in DLP, Plasma, and LCD repair.
  • http://ww2.justanswer.com/uploads/callallen/2009-10-26_013927_100_2875.jpg Allen's Avatar

    Allen

    Technician

    Satisfied Customers:

    534
    37 years tv service with Panasonic, Hitachi ,RCA