FixYourDLP.com Forums

BYO

Hi, I am not sure if Samsung will repair it for free. But I am sure what the issue is..... On your post you mention that the lines have a mathematical arrangement, 8 dark lines and 1" of light. This is a issue with the DMD board (Digital Micro-mirror Device), this board contains the DLP chip. Please...

BYO

:D Hi, :geek: This sounds like you have a bad DMD board, the DMD board is the one the creates the image and projects it to the screen. Watch this video that will explain you how the image is created on the TV: http://www.youtube.com/watch?v=eD_xZcYQE50 :idea: After watching the Video you will compre...

BYO

:mrgreen: Hi, :geek: The DLP chip is located on the DMD Board, to get access to it you will need to open the lower back cover of the TV, and you will see a board near the projection lens like this: :arrow: http://photos.discount-merchant.com/photos/1043/photos.php?itemid=1169748 :!: The DMD is insid...

BYO

Hi, The best way to do it is to replace the board with that input, our sponsors have it: http://www.discount-merchant.com/SAMSUNG-BP41-00307A-p/1192441.htm This issue is not limited just to the input board, since the path where this signal flow's might be affected in other board, but if I was you I ...

BYO

:mrgreen: Hi, If you was affected by lightning, with the symptoms you are describing, the issue could normally be in 2 boards: :arrow: Digital Video Board http://www.discount-merchant.com/1107114-WD-62525-p/1107114.htm or :arrow: Analog Video Board (the one with inputs and outputs) http://www.discou...

BYO

Hi,

Clicking noise is definitely the ballast, if we already replace it and still doing it, check the voltage coming from power supply to ballast it should be 350V, power supply might be sending oscillating voltage and might be shutting down if it goes under 350V.

BYO

Hi rgilf,

Welcome to the forum

,

If you have a power surge protector bypass it.
Do you hear any kind of sounds when you try to turn it ON

Is there any lights lid on the front of the set

BYO

:mrgreen: Hi, In order to read those 380v from power supply to ballast, you need to trick the TV by making sure to hold down the lamp door position switch to the ON position, and if there is another position switch for the back cover do the same on there. If you dont do this, there is a good chance ...

BYO

Hi,

I will definitely try the lamp first. This TV lamps do have a lifespan of about 6000-8000 hrs, and by 5 yrs is most likely that we already reach that limit.
Ballast also clicks when is not able to turn ON the lamp. 95% of the time replacing the lamp will make the trick!!

BYO

We are here to help

Anytime!!

BYO

:geek: Hi, Usually when this happens is related to a bad DLP chip, which is part of the DMD Board (Digital Micromirror Device) and light engine. Watch this video that will explain you how your TV works: http://www.youtube.com/watch?v=eD_xZcYQE50 After watching the video you will comprehend that half...

BYO

:geek: Hi, Usually when this happens is related to a bad DLP chip, which is part of the DMD Board (Digital Micromirror Device) and light engine. Watch this video that will explain you how your TV works: http://www.youtube.com/watch?v=eD_xZcYQE50 After watching the video you will comprehend that half...

BYO

Hi preludedez,

Troubleshooting online for a LCD TV's can be a little bit complicated, what is the name of the amber light?
How many blinks? How long does it take to blink again? Do you notice something before it broke? Can you turn TV ON but image doesnt show up?

BYO

Hi Donna, I am sorry to hear this.....

Please describe a little bit more what do you hear when it shuts OFF, after shutting OFF how long does it take to turn ON? Do you hear any kind of screeching sound's or buzzing?

BYO

That can only mean that you need to change the ballast, that lightning isn't normal.

BYO

I really doubt that temp sensor is the issue. Since the symptoms you have are very isolated from temp sensor. The ballast shouldn't be arching the way you are describing it.

BYO

:o There is a really good chance that you received a defective ballast. The click you hear is a precharge of 5Kv that is released in order to ignite the bulb, this normally last just a fraction of second, it shouldnt last 4-5 seconds. Just ask for a exchange of the ballast and explain what is going ...

BYO

Hi,

Can you describe this a little bit more?
"14. notice that when bulb trys to ingnite that I see blue on ballist also."

It happens when you hear the clicks?
How does it look like?
How long it last?

BYO

:geek: Hi deralbert, Yes it sounds like a ballast issue..... but you can try resetting the lamp hour meter first. Since this one tells the ballast how old is the lamp and ballast adjust voltage because of lamp consumption. If we don't reset the timer ballast might still send voltage for an old lamp ...

BYO

:mrgreen: Hi, With all the troubleshooting you have done there is only 2 more simple things to check and those are: 1.- Temp Sensor 2.- Lamp Door Sensor Check continuity on temp sensor and also onLamp Door Sensor at the ON position. If there is no continuity you will need to change it. The event you...

BYO

:geek: There are other components from the light engine system that can trigger the same alert..... :idea: And those are: 1.- Lamp Ballast 2.- Color Wheel 3.- DMD 4.- Temp Sensor 5.- Lamp Door Sensor :arrow: Try to hear a little bit more the TV when is trying to turn ON. You may identify a clicking ...

BYO

:shock: This could be a couple of things.... :arrow: Bad DMD (which is part of the light engine and contains the DLP chip) :arrow: Bad Digital Video Board :arrow: Bad Color Wheel If menu looks ok there is a good chance that Digital board is not the issue, since menu bypass the digital board. :geek:

BYO

If you have backlight that means that power supply and the voltage inverters are working.....
Most of the time when this happen the Logic board is the one that needs replacement, but this could be also related with the Video Board that delivers the signal to the Logic Board.....

BYO

:shock: If you can see that the lamp turns ON and you still dont have a image, :idea: most probably your DLP chip is bad, this is a very well known issue with Samsung's. Please check the following info: :arrow: http://www.youtube.com/watch?v=eD_xZcYQE50 :arrow: http://www.dlp.com/technology/how-dlp-...

BYO

That's the attitude, you are using Smilies

BYO

:shock: If you can see that the lamp turns ON and you still dont have a image, :idea: most probably your DLP chip is bad, this is a very well known issue with Samsung's. Please check the following info: :arrow: http://www.youtube.com/watch?v=eD_xZcYQE50 :arrow: http://www.dlp.com/technology/how-dlp-...

BYO

:shock: If you can see that the lamp turns ON and you still dont have a image, :idea: most probably your DLP chip is bad, this is a very well known issue with Samsung's. Please check the following info: :arrow: http://www.youtube.com/watch?v=eD_xZcYQE50 :arrow: http://www.dlp.com/technology/how-dlp-...

BYO

Check the connections of the color wheel, they might be loose.

BYO

This is definitely a DLP chip issue, you need to change the DKP chip or the DMD board. Please check this info: :arrow: http://www.youtube.com/watch?v=eD_xZcYQE50 :arrow: http://electronics.howstuffworks.com/dlp1.htm :o After reading this you will comprehend that some of the micro-mirrors on the DLP ...

BYO

:ugeek: It could be something really simple..... :idea: :!: Right next to the lamp there is a thermostat that opens the circuit when it reaches X temperature. As any other thermostat it can go bad at any given moment an instead of opening the circuit at X temp, it might do it at X-20 temp. When that...

BYO

it could,

but I will definitely try the bulb first, most of the time, I will say 95% of the time this resolves it.

BYO

Hi Riya, Welcome to the forumn

Hope you help us a lot

BYO

It sounds like a light engine problem, and to be more specific to a DMD board issue. This is caused mainly by overheating. :arrow: You can prevent this to get worst by opening the lower back cover of TV and vacuum all the dust inside. :arrow: We also recommend you to let the TV breath a little bit m...

BYO

It might be a bulb issue, or related with the DMD since this board creates the picture. The DMD has a matrix of mircroscopical mirrors that hinges to a ON and OFF position very rapidly in order to create and reflect a image to the screen. Some times this matrix of micromirrors (for each pixel on scr...

BYO

:mrgreen: Hi, Yes, there is a good chance that your tv has issues with the ballast. When this happen the ballast will not send the voltage needed for the new lamp, since it might still think there is an old lamp even though if we already reset timer to 0's ballast might still send voltage for an old...

BYO

Hi MBrady, :geek: Your TV is well known to have ballast issues (http://en.allexperts.com/q/TV-VCR-Stereo-1749/f/Mitsubishi-WD52725-Picture.htm) The ballast is the only board that connects to the lamp and feeds with voltage. If the ballast is bad it will be consuming faster the lamps since most of th...

BYO

Hi janash,

95% of the time when this happen, it is because we already reached or exceed the average lifespan of the lamp. and replacing the lamp will make the trick.

BYO

Hi, There 3 more things that can trigger that Lamp alert. a.- Temperature sensor This is located right next to the lamp, you can test continuity, if is a open circuit you got to replace it. http://photos.discount-merchant.com/photos/1054/photos.php?itemid=1213367 b.- Lamp hour meter The TV has a hou...

BYO

There are only 2 parts that can cause this effect on screen, and those are: - Color Wheel - Digital Video Board 1st you can check the color wheel, open its housing and try to clean it, some times this makes the trick. Just be really careful while manipulating the color wheel since is a very delicate...

BYO

you can do it with a multimeter

BYO

After further research I found that the pulses sent by the DMD should be 3.5V switching ON/OFF alternately..... you can check this on the ribbon cable that comes from the DMD there should be at least 3-4 tips.....

BYO

anytime

BYO

sorry foo... U will have to live with it....

BYO

GREAT

BYO

ooooooooooooooooooooooook

BYO

If lamp is older than a year, I will definitely try replacing lamp first....

BYO

:shock: 4 years is a average lifespan for this lamps, in your case I would replace the lamp first..... or you can also try to reset the lamp timer to check if that makes the trick and force the lamp to start working again..... if it does, you still need to get a replacement lamp since it will fail a...

BYO

:mrgreen: Hi, The DMD sends alternate pulses to the color wheel to make it spin..... I dont think the DMD is bad, since you have that sound there is a good chance that you still received a bad wheel or it got damaged during shipping. This happens a lo of times since Wheel is a very delicate part and...

BYO

There are only 2 parts that can cause this effect on screen, and those are: - Color Wheel - Digital Video Board 1st you can check the color wheel, open its housing and try to clean it, some times this makes the trick. Just be really careful while manipulating the color wheel since is a very delicate...

BYO

Well it seems like light engine is not the issue at all..... :shock: :geek: To confirm this double check that lamp is ON, if you can sere the glow of the lamp, non of the components of the light engine are bad (you already replace lamp dmd and color wheel, if lamp is ON ballast is working properly a...

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