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Television repaur Model number TC2100SA(HISENSE) television when I switch it on the led light up and after 3 or 4 seconds it goes off but no other action what could be the problem

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It sounds as though you have a bad start up circuit. This problem could be a transistor , capacitor, scr, diac or several other components in the power supply. This is not a problem a non trained person can repair as you will need to trouble shoot the circuit board. If you do have experience in trouble shooting components, start in the power supple with the regulator transistor, and also always check the horizontal output transistor before moving on to the transformer. Good luck and I hope this has helped in some way.
Ed
NC Electronics
Mills, Wyoming

Posted on Feb 18, 2008

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I have a Hisense led tv model F39V77C.


Yeah, replace the set since it appears to be trashed. But if you have a few bucks lying around you might want to try replacing the unit's power supply to see if that resolves the many issues you have.

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Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electro-medical.blogspot.com/

To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

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These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/

Dec 04, 2015 | Hisense Televison & Video

1 Answer

The power light blinks 7 times, pauses, then blinks 3 times. Sound but no picture


These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit stage inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power led, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating, to many popular brand TVs and other devices. Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience.

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I would need the model number of your set to help you. also does the led blink?

Jun 23, 2008 | Televison & Video

1 Answer

Television


hmmm...who's the maker, hisense?

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