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What is the output IC for Sinotec mod MDHF F91TFT

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

tosinajibowo
  • 3 Answers

SOURCE: how do i fix a Sinotec DVD Hi-fi where the remote wont connect with the Hi-Fi?

troubleshooting a remote control device to see whether it is working or functional is easy to carry out.
1. get hold of your mobile handset and switch the camera mode on.
2. with the batteries installed in your remote control device, point the small lens at the top to the camera and view through your mobile handset.
note: remember to press any button on your remote control device at the same time.

Result:
1. you ought to be able to see or sight a bright light at the top of your remote control device. this is an indication the remote control device is okay.
2. where no bright light is sighted, you need to replace the remote controller.

caution:
DO NOT point the remote control device to your eyes or stare at the lens on top. Infra red is invisible and can cause damage to your eyes please

Posted on Apr 27, 2015

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little risky you can try this its your own risk give the hot air of hairdresser dryer machine with lot of care. if problem not solved this is faulty lights rods controller ic some time by jumpering on side light rod problem solved but only expert can jumper of lights rod switching ic. Not easy at home repair. best way contect to expert repairing lab. for more about that topic visit this link Phonetolls

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How do i fix a Sinotec DVD Hi-fi where the remote wont connect with the Hi-Fi?


troubleshooting a remote control device to see whether it is working or functional is easy to carry out.
1. get hold of your mobile handset and switch the camera mode on.
2. with the batteries installed in your remote control device, point the small lens at the top to the camera and view through your mobile handset.
note: remember to press any button on your remote control device at the same time.

Result:
1. you ought to be able to see or sight a bright light at the top of your remote control device. this is an indication the remote control device is okay.
2. where no bright light is sighted, you need to replace the remote controller.

caution:
DO NOT point the remote control device to your eyes or stare at the lens on top. Infra red is invisible and can cause damage to your eyes please

Apr 27, 2015 | Televison & Video

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Im trying to repair a Bx4500h. there is not output, the preamp sections works and the transformer works. I tested both. Im thinking its a problem with the 3080 IC underneath the amp board. Theres 2 cables...


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Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

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Where is horizontal output ic in my t.v?


There is no horizontal oscillator IC. The horizontal oscillation is generated and outputted by the main system control IC LA76810 itself. Refer some circuit diagrams using LA76810 to get more details about the horizontal oscillation output from the IC. Measure the frequency at that output pin. It should be some ever near 15.62KHz.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Type in the IC number, in the search box [at the top right] of the display window, and press enter to get all related posts. It will make surf easy.

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Sinotec tv


Check and replace its main system control memory IC. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/

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check the antenna u may be getting poor reception,if the video is ok on dvd then the antenna is , if not the tv is faulty on its video output need a tech to check it

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The main system control memory IC to your TV is faulty. It should be replaced. It is a very small IC, having only 8 solder terminals, and can be located very near to the main system control IC. It will look some what like this, and will begin with a numner 24c**
acb1112f-9f5d-4927-94ab-0aeb9db749b6.jpg

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1 Answer

I have a RCA mod. 20f512t cx51 20" flat screen tv.


Hello
There is some short circuit on the circuitboard of your TV. The smoked transistor like device is a low voltage regualtor integrated circuit [IC]. There is no 5VDC rail on the circuit board. The component you specifies may be a 5VDC regulator. If it is so, there must be a reason for its failure. Without this 5VDC rail, there will be no standby light. Its system control section won't work, as it have 5VDC to be into. You jusct check for some short on the 5VDC rail. There will be markings on the printed circuit board about the pins of that IC. It will have normally 3 legs, out of which one is marked as input, and other one as output and the third will be ground. You just find the output pin of that IC, resolder it out from the board, and measure there is any input voltage coming to its input pin without replacing it with an other. If not, collow the inout track to that IC, and find out the origin of that woltage. Usually it will come from the any one of the secondary windings of the line outout transofrmer {LOT}. If so there will be a series low value resistor will be there, check it for open. If there is input voltage already, check the output side for any short. In some cases, ceramic capacitors, if fitted across the 5VDC rail has a chance to get leakey, which in turn put a heavy load on the above said regulator Ic, and that may be the reason for its burning. Anyway, there is no 5VDC rail inside the circuit board. Check for it. If you wants any more clarification, ask me through Fixya, stating your findings, and your doings. OK

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