Question about Samsung LN40A630 40 in. LCD TV

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Image changes as system heats up

Feel the back of the tv does it seem to be running hot? Does it have a lot of dust? Do you have air flow around it or is it in a corner.... ? Maybe some components are wearing out like capacitors leaking on the power board. Maybe marginal, something like a large fan with a foam filter material could fix. Give me some feedback. Maybe we can extend the life a bit without significant cost.

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  • Samsung Master
  • 1,525 Answers

Hi look at the vents at the back see if the are clogged up, if so you could use some compressed air to blow it out.these tv do run quite warm hope it helps

regards
shaun

Posted on Apr 21, 2014

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Posted on Jan 02, 2017

  • 192 Answers

SOURCE: Samsung hdtv tv monitor no power no light

This is just a shot in the dark but it's possible that your power supply uses a full wave rectifying bridge made up of 4 diodes to convert the AC to DC. Check these diodes out to make sure they're not shorts or opens. You can use an ohm meter. They should look like a low resistance from their anode which is the + terminal to their cathode which is the - terminal and a high resistance the other way around. If your power supply has a little starter relay in it you can also check to see if the relay coil has been blown. It should look like a low value resistor. Unsolder and replace anything that doesn't pass these tests.

Posted on May 14, 2009

budmrtn
  • 11361 Answers

SOURCE: I had the exact same problem with my LN-S4051D

There two sections in power supply, one is the 5vdc standby which is always on, the second section are the 24vdc for backlight inverter board, 12v, 5v , this section get the command ON from the controller board. So you have to have 5vdc standby power supply working. Look at the connector for something like 5v-stby labelling, that the first palce to start.

Posted on Nov 08, 2009

Testimonial: "Thanks for your time and input."

  • 927 Answers

SOURCE: Which Replacement Power Board for LNT4665F Samsung LCD TV?

Howdy,
It would be a lot cheaper if you just replace the two caps that have gone bad. Just get a cheap solder pencil from the store and about an inch of solder and you are in business.
The Power Supply Board is the center Board (towards left) after you remove the back off the TV. Remove Board from TV with the 6-7 screws. Replace capacitors CM852 & CM853; 2200ufd 25volts.

Thaks for using FIXYA, BIG IRISH.

Posted on Jan 02, 2010

  • 1 Answer

SOURCE: Samsung TV clicking and won't come on

Did you find out if that would solve the problem? I was really excited to learn that all I needed to do was change out the capacitors but after installing 4 it continued to click. I to removed the cover to the and found the relay where the noise is coming from

Posted on Jan 29, 2010

  • 8457 Answers

SOURCE: We have Samsung LCD model LN26A450C1D, which is

The tv Tuner board is dead,that the board,where the brocasting incomming signal cable connected into it.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish Tuner board for the replacement.

Posted on Jul 22, 2010

Testimonial: "Thanks for quick response! I will try. "

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Power indicator lights up but there is no power


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Hi nashsmama.

Hot is a relative term, so here goes. Manufacturers will run a small tube of the warmed refrigerant in areas around the door to minimize condensation, so some heat is normal. Excess heat could mean your coils are in need of cleaning. Those are usually located under the refrigerator at the back behind a panel. You might be able to get a peek through the air flow slots to see if there is visible dust/pet hair build up. If there was too much heat, you would notice a difference in your temperatures and be making temp adjustments.

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Our dryer stopped heating so we changed element and cutoff kit, worked for 2 loads and quit, again changed cutoff kit and worked for 15 minutes and stopped heating again, what are we not doing right?


The cutoff is there to trip if too much heat builds up around the heating element. The most common reason for this is plugged venting. But it has to do with poor air flow for sure.

- Check to make sure your lint screen is clean and nothing is fallen down the lint filter chute

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My fridgidaire dryer model FDR336RDS2 seems to run too hot


Over heating in a dryer is almost always due to an air flow problem. Typically it is in the venting.

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- Run the dryer once it is connected and feel outside to see if you are getting the same airflow outside as you can at the outlet of the dryer, if the air flow feels weaker outside your vent is restricted and you need to have it cleaned.

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The door posts of my fridge freezers gets very hot. so the door seals become hot the only way it stops is if i shut the doors hard. why is this happening, it did it not long after i got the thing but now...


This is pretty normal unless you are having problems below the refrigerator fan. Good air flow equals more efficient. What you feel is call a yoder loop and that is hot Freon coming from compressor and circulating around doors to prevent moisture. If it becomes hotter and temperatures begin to increase inside freezer and fresh food compartments is really when you should be concerned. If the pipes were not there you would beging to see moisture form around door seals and rust also. At this point I believe your refrigerator is OK. Just watch for changes in temperatures inside combined with the heat around door frame. Other model refrigerators use electric heat strips to do the same thing and they can be switched off at a switch called energy saver. Your model does not have that and hot days the hotter it seems. Let me know if you have a safe temperature of 38 degrees inside fresh food compartment and if that changes we may need to clean dust and check condenser fan motor. Thanks, Sea Breeze

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My heater is blowing out cold air, i changed the thermistate and had it if flused out. The hot water from the heater core is going in but not coming back out.


Yeah you probley have air in the coolent system try letting it run untill the temp is about 195 degrees and then cut it off lwt the water **** down and out mor in and do it over untill you got heat

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Dryer run but wont get hot


Hi..

If your dryer not get hot check this

  • Check for proper air flow

If the flow of the air in your clothes dryer is impeded, the clothes will dry slowly or not at all. Also, a blockage in the vent system can be a fire hazard.



Check the vent for proper air flow by placing your hand over the exterior vent while the dryer is running. You should feel a strong flow of air. If you feel no air or the flow is weak, follow the steps below.
  • Test the safety fuse
  • Test the thermostats
The dryer uses multiple thermostats to regulate the temperature. When the temperature is higher than the preset limit of a particular thermostat, the thermostat breaks the circuit and the heater goes off. When the temperature cools enough, the thermostat closes the circuit again and the heat can come on.
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  • Test the timer motor
  • Test the heating element
Good luck !!!

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Smells like it is hot or something is burning after changing bulb


Your tv is actually an Air eater. The tv itself needs a complete river of air (it looks as an exageretion) not really. I create this picture in your mind to help you to imagine all care you tv needs.

  1. Turn off the set. allow 20 minutes to cool down the set
  2. move the tv to the front and get access to the back of the tv then with a vacuum cleaner gets all dust out around the set
  3. make sure the air filter (refer to the manual) is clean.
  4. try to make sure the places were the air flows into the tv are clean and free of obstructions (back cover).
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The fresh air that goes into the system gets finally out really hot and smelly but as soon as the air flows thats normal for this tv. this is noticiable specially in hot seasons.

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