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Greg Posted on May 24, 2019

I recently purchased Samsung BN94-11709A main board for TV that I can't remove because it doesn't have screws just some metal clips that I don't know how to release. Can someone please help?

5 Related Answers

Anonymous

  • 3130 Answers
  • Posted on Apr 11, 2006

SOURCE: How to discharge the TV tube?

First off there is no capacitor that holds the High voltage on the tube. Its the tube itself that stores the charge and if you dont discharge a tube properly it will bite you!!You can disconnect the 2nd anode of the tube(thats what the cup is called)that puppy can hold a charge for months as I've picked up used tubes that other service men may have striped out of a junk sets and still got zapped weeks later and it can burn a hole right in you if it bites you the right way. That metal strap is the ground for the crt(the picture tube) The proper way to saftly discharge a crt would be to take a screwdriver perferably a flat tip and connect a cliplead to the screw driver and clip the other end to the ground strap. Carefully slide the screwdriver up UNDER the cup on the crt till you reach the middle of the tube as you will feel it as it wont go any farther. In the meantime you might hear a pop sound and that would be the dischargeing of the tube.. Keep that screwdriver in place a min. of 30 to 40 secs. then remove . Then pinch the cup the oppisite direction on both sides that the wire is running as the cup is held in place by a small hooks on both sides Be carefull not to rip off the cup or bend the small hole suround that the cup is attached. And never ever poke a hole in the cup as I've seen peeps do and when you turn back on a set you will have fireworks as the high voltage will arch out all over the place and if your hand or face is close to it it will get you too!! Now take the clip lead and attach to the grounding strap and clip the other end to where you just took off the cup and your all set.Good Luck with your repair

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Anonymous

  • Posted on Dec 24, 2007

SOURCE: Purchasing an internal circuit board part for a sharp LC 20S1E LCD TV

send me the model and serial number and i will be able to advise you

Lou Margo
Allied Electronics
[email protected]

Anonymous

  • 192 Answers
  • Posted on Nov 28, 2008

SOURCE: Samsung 50 in Plasma volume Problem. Please help!

In the menu, there should be an option for AUTO VOLUME, see what this is set at, change it and see if it works. Also there is another option for INTERNAL MUTE, though I still haven't found out what it's for, myself. Give both a go. If neither of these work, try looking at the support pages on the Samsung website. Other than that, I can only suggest you take it back to where you purchased it, and ask for an exchange.

marionbagget

  • 718 Answers
  • Posted on Mar 30, 2009

SOURCE: how hard it is to replace by yourself main board Samsung LN-T4065

You need to do some more diagnosing of the problem. If you get sound and change channels take a bright flashlight and place it again the screen. Look for an image around the edge of the flashlight.
If you see an image that means the LCD controller board (TCON) is probably good.

The problem is probably one of three causes;
1) Inverter board is bad
2) CCFT (cold cathode fluorescent light) are bad.
3) Power to the inverter board is bad. You can also check the connectors.

Anonymous

  • 3600 Answers
  • Posted on Jul 27, 2009

SOURCE: 2004 Kia amanti door panel removal.

did you remove the screws from the arm rest screws? from the top and from the side and they have plugs in them so that you don't see them

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How to discharge the TV tube?

First off there is no capacitor that holds the High voltage on the tube. Its the tube itself that stores the charge and if you dont discharge a tube properly it will bite you!!You can disconnect the 2nd anode of the tube(thats what the cup is called)that puppy can hold a charge for months as I've picked up used tubes that other service men may have striped out of a junk sets and still got zapped weeks later and it can burn a hole right in you if it bites you the right way. That metal strap is the ground for the crt(the picture tube) The proper way to saftly discharge a crt would be to take a screwdriver perferably a flat tip and connect a cliplead to the screw driver and clip the other end to the ground strap. Carefully slide the screwdriver up UNDER the cup on the crt till you reach the middle of the tube as you will feel it as it wont go any farther. In the meantime you might hear a pop sound and that would be the dischargeing of the tube.. Keep that screwdriver in place a min. of 30 to 40 secs. then remove . Then pinch the cup the oppisite direction on both sides that the wire is running as the cup is held in place by a small hooks on both sides Be carefull not to rip off the cup or bend the small hole suround that the cup is attached. And never ever poke a hole in the cup as I've seen peeps do and when you turn back on a set you will have fireworks as the high voltage will arch out all over the place and if your hand or face is close to it it will get you too!! Now take the clip lead and attach to the grounding strap and clip the other end to where you just took off the cup and your all set.Good Luck with your repair
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