Question about Niko SV-3706 37 in. LCD Television

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Niko Sv3706 - When plugged in the Red idle power light is on but when turned on the light goes green then completely shuts off with no light nothing on screen when turned on

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Just fixed mine, when plugged in red light comes and goes, sometimes it ststays on but when I turn it on the green light comes on then off. Opened up tv, there is a heat shield of some sort,take off, there is a board where plug goes into the wall,it also has three more plugs plus a ground that is screwed to the tv.I looked at the board and there were two capacitors that were bulged and had brown stuff about to come out the top. They were 1500uf 16v 105c, I changed them only I made them 25v instead of 16. And boom life was good. Good luck and sorry for my spelling.

Posted on Nov 15, 2012

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Posted on Jan 02, 2017

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SOURCE: Niko Screen and channel problem

Fortunately, I have not had the fuzzy green screen problem in quite awile, and since getting the Dish, I have not had to worry about channel memory loss. I am thinking about turning this one into a computer monitor...is this even possible... and getting a bigger tv for the front room, HD of course.

Posted on Sep 25, 2008

jerryg50
  • 1667 Answers

SOURCE: will not turn on

I have not worked on your model of set. I can tell you generically my opinion from experience of servicing many TV sets.

Once a fuse or any failure to operate properly occures in solid state devices there is an actual fault. These systems have very well designed protection circuits and are computer controlled.

The pop you heard is most probably a direct failure of a component that is most likely feed from one of the main power rails on the circuit board where it operates. The first area of fault may be in the main power supply. In these sets there are several levels of power supplies. Because the pilot light on the set is not lit, I would assume that the main power supply has failed.

It is also possible that a power drive circuit has failed, and the main power supply is in the protection mode, or has also failed. Normally, if there is a failure and the power supply can still function enough to operate the uPC, the uPC will issue a warning. This results in flash codes from the pilot light.

If the fault is not complicated an experienced TV tech may be able to troubleshoot and fix the power supply at the component level.

Normally these sets are serviced by swapping out boards. The tech will try the suspect boards and leave in the boards that make the set work. The next step is to follow the service manual using the calibration instruments to confirm and adjust the factory level setups.

TV sets are not simple devices. There are many power drive circuits that operate various areas. Flat panel sets have some basic principles that follow that of the CRT sets, but for the most part they are very different and very complex in many areas.

I tried to find for you any direct authorized support contact information for your TV. I was not able to find any.

These sets can be fairly expensive to service. You could try a local service center. Ask for an estimate before servicing the set.

When buying a new set I would suggest for you to stay with a big brand name type set. Whatever set you choose find out if there is direct factory level service in your area for the set.

I hope this helps you out to understand more about the problem.


Jerry G.

Posted on Feb 04, 2009

  • 1779 Answers

SOURCE: where can I get a power cord for niko 26 inch?

95% of all LCD's use the standard PC or Monitor cord. Best Buy ect...

Posted on Feb 06, 2009

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