Question about Insignia IS-LCDTV32 32 in. Television

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Water in LCD, sound but no picture

Water got into the works of my LCD TV, from the top slats. The sound is fine but there is no picture. Any ideas?

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This unit is having a problem in the main board. This is the television control board. The video television tuner is not working correctly. Have you tried other signal input sources to see if they are working, like dvd or vcr. If they are then the problem is in the tuner section only. If the other inputs are also not functioning , then it a problem with the video circuits failing.This is a problem that need to tested and serviced in a service center. The service center will have all the correct service information to evauluate the problem and repair it for you. The customer support telephone number for Insignia is. 1-877-467-4289. They also have a costumer support section on their website, which is . www.insignia-products.com. You can also contact Best Buy customer support at this telephone number 1-888-237--8289. Give any one of these support centers the brand name of you television and the model number. Ask them to evaluate the problem and where you can take it for testing and service. I hope this information helps you with your problem.

Posted on May 26, 2009

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Posted on Jan 02, 2017

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also check to ensure the following.....
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2. Check to be sure the lamp door sensor is closing (that is not your issue but i thought i would post the complete answer)
3. Check colorwheel is spinning up (should be a low hum, and not sound like a fan)
*** it is very possible it is a failed colorwheel, but the set should go into shutdown, so it is probably not the issue.
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If the set is working and then just stops working best bet is the DMD ( i would not replace just the dmd it is cheaper in most cases and much easier to replace the lightengine) but if the set just is not working and just failed and is now always not working best bet is the digital board.

If you have an osciloscope you can measure the video signal from the Digital board and see if it is present with the no picture, if it is then it is a bad DMD but if the video signal disappears of then you have a failed Digital board. You can not us a computer USB scope, they can not read most of the data from the digital board since they use multiple scan rates and wont trigger on them for some reason, a old school scope works best i have found, or one of those new LCD scopes that have an auto trigger work well i have found that it is all i use anymore.

you can find a service manual with schematics at a very cheap price at ebay......

regards
iversh

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also check to ensure the following.....
1. re-seating the DVI cable on both sides
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3. Check colorwheel is spinning up (should be a low hum, and not sound like a fan)
*** it is very possible it is a failed colorwheel, but the set should go into shutdown, so it is probably not the issue.
4. If the set has sound but no picture replace DMD board....


If the set is working and then just stops working best bet is the DMD ( i would not replace just the dmd it is cheaper in most cases and much easier to replace the lightengine) but if the set just is not working and just failed and is now always not working best bet is the digital board.

If you have an osciloscope you can measure the video signal from the Digital board and see if it is present with the no picture, if it is then it is a bad DMD but if the video signal disappears of then you have a failed Digital board. You can not us a computer USB scope, they can not read most of the data from the digital board since they use multiple scan rates and wont trigger on them for some reason, a old school scope works best i have found, or one of those new LCD scopes that have an auto trigger work well i have found that it is all i use anymore.

you can find a service manual with schematics at a very cheap price at ebay......

regards
iversh

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also check to ensure the following.....
1. re-seating the DVI cable on both sides
2. Check to be sure the lamp door sensor is closing (that is not your issue but i thought i would post the complete answer)
3. Check colorwheel is spinning up (should be a low hum, and not sound like a fan)
*** it is very possible it is a failed colorwheel, but the set should go into shutdown, so it is probably not the issue.
4. If the set has sound but no picture replace DMD board....


If the set is working and then just stops working best bet is the DMD ( i would not replace just the dmd it is cheaper in most cases and much easier to replace the lightengine) but if the set just is not working and just failed and is now always not working best bet is the digital board.

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you can find a service manual with schematics at a very cheap price at ebay......

regards
iversh

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