My Samsung Model T22B350ND HDTV Monitor turns off after approximately 15 minutes. Can it be repaired, and if it can how much would it cost? Maybe just cheaper to buy a new TV. Thank you, Barbara

SOURCE: mitsubishi DLP overheating

check your air intake filters, it's a removeable filter in the air inlets.

SOURCE: Hi, I have 52 inch HDTV

1. Try this - hold the menu button down for 10 seconds. TV should power up; you will have to turn off front panel buttons on menu.

2. You can also try a hard reset: Unplug TV from AC mains and remove all cables from TV. Wait about 30 minutes and re-plug to AC power and redo the cabling. Switch on the TV and see if it works..

3. Powering down the set or putting it in standby may have allowed the power supply to cool. Weak capacitors often go out of spec when they cool, thus preventing a section of the power supply from firing up properly again. There is a simple trick...just warm the back of the TV with a hair dryer for 5-7 mins after you have unplugged the TV. Look for the little areas of holes in the back panel of TV. Use these as your guide at where to use the hairdryer, but don't hold the dryer too close (say 5-6inches away). (Make sure the dryer is on High heat). If the TV doesn't turn on after you have heated it up (like it tries to come on but then turns off) you need to unplug the TV again, this resets it. And repeat those steps till it works. Resetting the TV after it fails to turn on is the key. Also, just leave the TV on. Don't turn in off. Since it is LCD, it doesn't take much power...only a few bucks extra a month for your utility bill.

4. A circuit board may crack about some of the larger components mounted on it. You can inspect the PCB's for fractures, and then repair them. It may also be poor soldering that has failed. I would be checking for these things first.

5. If you want to go in for a long term solution, you can easily replace the whole power board or just change the faulty capacitors. You will have to open the back panel and take a look. You can make out which are faulty, because their caps will be swollen on top. Here's a sample pic of a bust capacitor (not same model):

Check the specifications of the faulty capacitors, and get the replacements from your local electronics shop. If you are comfortable with this, you can use a pair of needle nose pliers to G-E-N-T-L-Y pull out the defunct capacitors. Once that is done, solder in the new capacitors carefully. If are unsure how to do this, try to get a friend who knows how to do this kinda stuff do it for you, or get a qualified technician. Warning: If you do not have a background in electronics repair, or are inexperienced, get a qualified technician to do it for you.

REMEMBER there are very dangerous voltages inside a TV that can KILL. Be sure to work SAFE when dealing with electricity. DISCONNECT THE POWER BEFORE YOU DO ANYTHING.

If all this does not work, it could indicate a problem with the power board, which may have to be replaced. Scout around for various quotes, and if you feel its worth it, go in for repairs. It only 3 years old, after all. However, if you feel that the repair is not worth it, then think about getting a new TV..

Hope that helps!

If your issue is not resolved, please do not assign a rating just yet. Please post back as to what steps you took, results, etc, and I will try to assist you further as best I can. I am here at your service.

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pravin bhavsar

• 348 Answers
• Posted on Nov 20, 2008

SOURCE: need to get a new power supply for my samsung monitor

you first look the watt on the power supply and if same watt power supply is available then connect because power supply has overload protection it will not work also look the connecter is matching if not then purchase only original power supply dont chase the duplicate it will consume more money

SOURCE: jvc av-32fa44 tv--loud pop, then off and won't turn back on. buy new?

Its the power cap mine did the same thing about 11 months into daily use

SOURCE: power cut off and won't turn back on

The board you need to replace is the power supply board. The board# is BA71F0F01042. Your power supply board should have the same number on the lower right side of this board.
The problem is the 6 Transformer Inverters that power up the LCD screen. If one blows out, the TV will go into protection mode like it's doing now. All the Funai TVs are having the same problem. Because, it uses the same parts.
The board is hard to find right now. Only three places I know of to find it.
Ebay,
Discount-Merchant.com,
and Shopjimmy.com
Sadly, nobody has them in stock.
I wish I had a extra board to sell you, because I know how to repair it. I have the schematics diagrams and part# for the pieces on the board.
If you ever come across a replacement board, let me know. I would like to buy your old board. Here's my e-mail, [email protected]