Question about Samsung HLN467W 46" Rear Projection HDTV
I need verification - a previous tech said I had an IC failure. I need to know which board to replace.
1. Try this - hold the menu button down for 10 seconds. TV should power up; youwill 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 cablesfrom TV. Wait about 30 minutes and replug 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 haveallowed the power supply to cool. Weak capacitors often go out of spec whenthey cool, thus preventing a section of the power supply from firing upproperly again. There is a simple trick...just warm the back of the TV with ahair dryer for 5-7 mins after you have unplugged the TV. Look for the littleareas of holes in the back panel of TV. Use these as your guide at where to usethe hairdryer, but don't hold the dryer too close (say 5-6inches away). (Makesure the dryer is on High heat). If the TV doesn't turn on after you haveheated it up (like it tries to come on but then turns off) you need to unplugthe TV again, this resets it. And repeat those steps till it works. Resettingthe TV after it fails to turn on is the key. Also, just leave the TV on. Don'tturn in off. Since it is LCD, it doesn't take much power...only a few bucksextra a month for your utility bill.
4. A circuit board may crack about some of the largercomponents mounted on it. You can inspect the PCB's for fractures, and thenrepair them. It may also be poor soldering that has failed. I would be checkingfor these things first.
5. If you want to go in for a long term solution, you can easily replace thewhole power board or just change the faulty capacitors. You will have to openthe back panel and take a look. You can make out which are faulty, becausetheir caps will be swollen on top. Here's a sample pic of a bust capacitor (notsame model):
Check the specifications of the faulty capacitors, and get the replacementsfrom your local electronics shop. If you are comfortable with this, you can usea 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 todo this, try to get a friend who knows how to do this kinda stuff do it foryou, or get a qualified technician. Warning: If you do nothave a background in electronics repair, or are inexperienced, get a qualifiedtechnician to do it for you.
REMEMBER there are very dangerous voltages inside a TVthat can KILL. Be sure to work SAFE when dealing with electricity. DISCONNECTTHE POWER BEFORE YOU DO ANYTHING.
Hope that helps!
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Posted on Sep 06, 2008
The lamp would indicate that you have a faulty lamp, if you want to make completelu sure I suggest you ask slinteriors. Il get you a link to him, he has over 25years of experience in this field.
From the information that you have given me you would need to replace the lamp, which was the previous tech?
Posted on Sep 06, 2008
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Posted on Jan 02, 2017
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