The repair tech was just (again). He put another new lamp in and swore this was the problem. 5 minutes after he left the set shut off yet again. So far since we've owned the set we've had 3 new lamps and a new color wheel. Today made lamp number 4.
Do you have any ideas as to what is causing this problem? We purchased the set 5/04. Its only been about the past year we've had this problem. We do have an extended warranty, but that's no consolation when you are handicapped and don't have a tv.
I am having the same problem. I have replaced a lamp and a color wheel. The leds do flash when the tv goes off. After about fifteen seconds, I can turn it back on. It may stay on two or three minutes or an hour...I am having the same problem. I have replaced a lamp and a color
wheel. The leds do flash when the tv goes off. After
about fifteen seconds, I can turn it back on. It may stay on two
or three minutes or an hour...
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The glue is just protection as far as the lamp gone if you bout an after market on that probably the problem I went threw 5 of them before I to it to a TV repair shop he put in a oem lamp and it's work fine ever since hope this helps
I hope that he really put a new lamp in, because that sounds like your problem, and some techs, think that the lamp is not blown it is good, but that is not always the case, Those lamps build up a internal resistance and that is what cause the TV to shut off, and it will get to the point where the TV will not come on.
Ensure that the TV is off. It may be advisable to unplug the TV as well.
2
Using a Phillips screwdriver, remove the single screw affixing the lamp cover (the small, grill panel on the back of the set) to the chasis. There is also a grill that is held in place by tension. Just "pinch" the thumb clamp on the bottom of the grill and slide it out. This is the same procedure you would perform to change the lamp, except in this case you will not need to remove the lamp itself.
3
Inspect the spring-loaded blue safety switch to ensure it is making good contact when the panel is secured. The switch should deflect downward when the panel is replaced. If the contact with the panel is suspect, very gently bend the metal bracket on which the switch is mounted.
4
Replace the grill cover and the lamp door, and continue to enjoy your TV.
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5.Check some basics first. Make sure the sleep timer on your TV hasn't been turned on, telling your set to turn off at a certain time. If your DLP TV is acting erratically, Samsung recommends turning the set off and unplugging it for 30 minutes. After 30 minutes plug it back in and turn it back on. Unplugging the set resets it, and that may fix the problem.
6
Check your power supply. Make sure your Samsung DLP is securely plugged into a working outlet. Plug the TV into a different outlet to see if the problem still exists. Make sure that a fuse hasn't blown in your house or a circuit breaker hasn't flipped.
7
Replace the lamp. If your Samsung DLP is shutting off or won't turn on, a bad lamp is the most likely cause. To replace the lamp, remove the lamp cover from the back of the TV by removing the screws with a Phillips screwdriver and slide it out and away from the TV. Remove the screws on the lamp assembly and slide it out of the TV. Disconnect the old lamp and insert a new lamp into the assembly. Slide the assembly back into place and replace the screws. Do the same for the lamp cover.
8
Check for signs of overheating. Samsung DLP TVs generate a sizable amount of heat. If the components inside the TV get to hot, the TV will shut itself off as a protective measure. Make sure your DLP is out 12 inches or so from the wall. Make sure that all of the vents on the set are clear of any obstructions. Allow the TV to cool down for 30 minutes before turning it back on.
9
Contact Samsung. If none of the above tips help, it's time to contact Samsung, as the problem is likely something that should only be fixed by a qualified service technician. More serious problems may include a bad power supply or a bad ballast. Attempting to repair those yourself will void your warranty and may cause more serious damage to your set.
The safety switch exists so the user does not accidentally remove the lamp door while the TV is on. Doing so could, theoretically, result in burn or electrocution. This spring loaded switch causes the TV to shut down when the door is opened.
Since the TV's chasis is plastic, expansion and contraction can cause the switch to lose firm contact with the lamp door. The TV's behavior could then be such that after being on for a while (getting warm) the plastic expands and the switch loses enough contact to cause the TV to shut down. The frequency with which this phenomenon occurs is not only dependent on the internal temperature of the TV, but also the ambient temperature of the room as well as the relative tension on the switch itself. The user's perception is that the TV starts up fine, but then "randomly" turns itself off after being on for a while.
If you have recently moved your TV, it is very common for random shut-downs to occur. This is because the move has shifted the flimsy plastic chasis of the TV, thereby loosening the contact between the lamp door and the switch.
Make sure your TV is off and cool when performing this procedure.
Ensure that the TV is off. It may be advisable to unplug the TV as well.
2
Using a Phillips screwdriver, remove the single screw affixing the lamp cover (the small, grill panel on the back of the set) to the chasis. There is also a grill that is held in place by tension. Just "pinch" the thumb clamp on the bottom of the grill and slide it out. This is the same procedure you would perform to change the lamp, except in this case you will not need to remove the lamp itself.
3
Inspect the spring-loaded blue safety switch to ensure it is making good contact when the panel is secured. The switch should deflect downward when the panel is replaced. If the contact with the panel is suspect, very gently bend the metal bracket on which the switch is mounted.
4
Replace the grill cover and the lamp door, and continue to enjoy your TV.
jQuery('.article ol .image').each(function(i,e){
var $this = jQuery(this);
$this.find('img').error(function(){
jQuery(this).remove();
$this.remove();
});
});
5.Check some basics first. Make sure the sleep timer on your TV hasn't been turned on, telling your set to turn off at a certain time. If your DLP TV is acting erratically, Samsung recommends turning the set off and unplugging it for 30 minutes. After 30 minutes plug it back in and turn it back on. Unplugging the set resets it, and that may fix the problem.
6
Check your power supply. Make sure your Samsung DLP is securely plugged into a working outlet. Plug the TV into a different outlet to see if the problem still exists. Make sure that a fuse hasn't blown in your house or a circuit breaker hasn't flipped.
7
Replace the lamp. If your Samsung DLP is shutting off or won't turn on, a bad lamp is the most likely cause. To replace the lamp, remove the lamp cover from the back of the TV by removing the screws with a Phillips screwdriver and slide it out and away from the TV. Remove the screws on the lamp assembly and slide it out of the TV. Disconnect the old lamp and insert a new lamp into the assembly. Slide the assembly back into place and replace the screws. Do the same for the lamp cover.
8
Check for signs of overheating. Samsung DLP TVs generate a sizable amount of heat. If the components inside the TV get to hot, the TV will shut itself off as a protective measure. Make sure your DLP is out 12 inches or so from the wall. Make sure that all of the vents on the set are clear of any obstructions. Allow the TV to cool down for 30 minutes before turning it back on.
9
Contact Samsung. If none of the above tips help, it's time to contact Samsung, as the problem is likely something that should only be fixed by a qualified service technician. More serious problems may include a bad power supply or a bad ballast. Attempting to repair those yourself will void your warranty and may cause more serious damage to your set.
The safety switch exists so the user does not accidentally remove the lamp door while the TV is on. Doing so could, theoretically, result in burn or electrocution. This spring loaded switch causes the TV to shut down when the door is opened.
Since the TV's chasis is plastic, expansion and contraction can cause the switch to lose firm contact with the lamp door. The TV's behavior could then be such that after being on for a while (getting warm) the plastic expands and the switch loses enough contact to cause the TV to shut down. The frequency with which this phenomenon occurs is not only dependent on the internal temperature of the TV, but also the ambient temperature of the room as well as the relative tension on the switch itself. The user's perception is that the TV starts up fine, but then "randomly" turns itself off after being on for a while.
If you have recently moved your TV, it is very common for random shut-downs to occur. This is because the move has shifted the flimsy plastic chasis of the TV, thereby loosening the contact between the lamp door and the switch.
Make sure your TV is off and cool when performing this procedure.
There are 2 primary things that can cause this problem - a bad TEMP sensor that is sensing too much heat, OR, a lamp that is going bad, which sometimes causes excessive heat before it dies. Either way, the set will shut itself off, and you can turn it back on in about 5 min or so, and it will work OK....for another period of time before it shuts off again.
You need a good TV Tech with the Sony Service Codes for your set, to come out & check your set. The Service Codes will tell him the exact problem you are having, and how many hours your set has been running. Most of the time a new bulb solves this problem, (if youe set is at least 3 years old).
My first question is did you have this problem before your set was repaired the first time or did it occur after a tech took it apart?
The switch could be flakey evidenced by it working after the door is removed and reinstalled, but I would think you would have seen that symptom before the TV was repaired. BTW- what problem did you call them out for service on?
The door switches are very delicate and Sony warns techs in their training videos to watch for this when they do an optical block swap.
If I was repairing the set, I would meter the switch for voltage at the time it fails and if I saw voltage the switch is defective or the position of the switch board or optics is changing. If no voltage was measured at the time the set shuts off and the red light still blinks 3 times, then the board the switch goes to could be bad.
You either have a bad fan or one of the rotation sensors mounted on one of the fans has failed. Take the back off the set and see it the main fan slightly right of center is rotating. If it is, there are two more fans, one mounted right above the lamp and another on the optical block itself. You will have to pull the optical block to check those.
Refer to owners manual ! Blinking indicates the type of fault that is occuring on all your tv sets. example : power light on red - indicator light beside it green but blinks rapidly for half a second rapidly then shuts off. This refers to a faulty lamp or a lamp that is near its expiration. Read your manuals if indicators refer to easy repair sweet, but if it says call tech then bummer...
When the lamp becomes weak in this Sony the unit will shut off intermittently. I would replace the lamp and use only an OEM Sony lamp, not an LTI or other knock off. The knock off lamps are of poor quality in my experience and opinion.
The Samsung rear projector TV's have a Fail Safe circuit connected
to the Flyback transformer, if the power at RR402S dosn't reach
2.25 v in a few seconds the Micom kills power to the switching IC.
Most of the time this problem originates in the power section. It
could mean the Flyback Transformer is getting bad. But most of the
time I have found that the Switching IC is failing. This IC is
located between Transformer T801S and attached to large Aluminum
Heat Sink. It is identified as IC831S (STR-X6456).
I am having the same problem. I have replaced a lamp and a color
wheel. The leds do flash when the tv goes off. After
about fifteen seconds, I can turn it back on. It may stay on two
or three minutes or an hour...
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