Question about Insignia I-LC23Q1 23 in. HD-Ready LCD Television
Ok - problem is that my monitor randomly goes black. I say goes black, not turns off, because the monitors power button stays on(green lit). My monitor is a 23 inch TV that has a VGA connection on the back. Its an Insignia(best buy brand). When it goes black all I have to do is push the VGA button on the remote and the picture will come back. Some times it goes black within a second again and I push the button again. I do this usually 4-5 times and the monitor will start to "cycle"(going black and showing picture) about 3 times then the picture will stay on. Some times it stays on for hours - some times the problem happens within 5 minutes. Here is a video in case my description absolutely sucks. http://uk.youtube.com/watch?v=Zs43qTTBIeE
If the screen is black and you have sound then lightly press and shine a strong flashlight against the screen. If you see an image around the edge of the flashlight, an image is being 'displayed'. The problem is probably in the Inverter/CCFT or the power going to the Inverter.
Posted on Feb 24, 2009
SOURCE: insignia ns-lcd 15 no picture
So the big problem these TVs have is that they are built with generally cheap parts. At the same time, the parts have the potential to be reliable, but little things like poor board design or cheap capacitors ruin them.
For this TV, the likely problem is the power board.
The first thing you should try is to be sure that the TV is still working, even though the screen is black. You can do this by hooking it up to something, like a dvd player and check to make sure it still has sound. If it doesn't, it still may not be a big problem, but it has the potential for being more than just the power board.
If it does still have sound, you need to disconnect everything, open up the TV, and remove the power board (the board with the power plug either on it or connected to it). I would suggest investing in a multimeter with which you can test capacitors, fuses, and circuits in general. At that point, you should check the board for obvious signs of issues.
1) One big one would be noticing if any of the capacitors (cylindrical electrolyte caps being the more likely issue) are blown or bulging out at their top or bottom.
2)You can also check the fuse, although be aware that the fuse may be a microfuse that looks nothing like those you may be familiar with.
3) In general look for areas of burns or darkening or damaged looking parts.
I would replace any fuses or capacitors that you need to replace using a soldering iron and good solder. Be careful not to bridge connections with excess solder, and in general stay away from this unless you spend some time getting acquainted with soldering parts onto a circuit board. You may potentially damage the board further if you don't know what you are doing.
Anyways, check if that fixes the problem. Any thing more than that would likely be both too difficult and too costly to repair, unless of course you manage to get a good deal on a power board. At the same time you should know that the power board might not be the only problem.
If the power board looks fine or is not the only problem, then:
It is possible that the problem you are experiencing is the result of a bad backlight panel. This can be fixed by either replacing the whole LCD panel or simply the backlight panel - for example you could get your hands on a broken LCD of the same size and switch out the panels, but thats a lot of work. I also know that repairing the backlights themselves is possible and there are tutorials online, but its riskier and more difficult.
Posted on Aug 14, 2009
I have an insignia TV 32" and I used common code 10463 to program my direct tv remote. hope it works for you.
Posted on Aug 28, 2009
There are two possible causes for this problem, either back light inverter board stop working thus screen goes black as lcd screen needs back light to show its image OR if sound remains while screen goes black then it seems firmware issue.
Let me know is it Insignia NS-LCD42HD tv or any other model?
Do you get sound in tv while no picture?
Does screen show any on-screen display when tv lose picture?
Above info will help me to diagnose problem in tv and to suggest some solution.
Posted on Jan 22, 2011
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