Question about Flat Panel Televisions

1 Answer

Hisense color TV ±74cm, Model TC2919H

Looking for circut diagram for this model as the cirut burnt the board and i cannot read the fuse/diode details.
Please assist.

Posted by on

  • Hannes Smith
    Hannes Smith Sep 04, 2012

    NEED THE IC NO N501 IN POWER SUPPLY

  • Hannes Smith
    Hannes Smith Sep 04, 2012

    NEED IC NO N501

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

I HAVE A PROBLEM IN THE PRIMARY POWER SUPPLY STAGE HAVE CHECKED ALL COMPONENTS AND RELACED STRG96...IC AND OPTO COUPLER .

CAN U LET ME HAVE A CIRCUIT DIAGRAM?

Posted on Apr 09, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

Tip

Shorted Rectifier Diode (fuse keeps blowing)


jdvillanueva_14.jpg
This CRT tv is dead set, no reaction when the power button is pressed(no standby led light). I've open the back panel and check the faulty parts.
jdvillanueva_15.jpg

As you can see the fuse was badly burnt-out indication of excessive current due to short circuit.
jdvillanueva_17.jpg

I've checked the parts feeding the AC line to the power supply board (Power cord, VDR, Ceramic capacitor, Coil, Posistor, Degaussing coil) one by one and I've found out that one of the four rectifier diode has a leak which caused the glass fuse burnt-out.
Here's how to test the rectifier diode.

Good Diode
Note : Forward and reverse bias depend on what type of ohmmeter are you using, here I'm using a Japan Standard(Sanwa Brand).
jdvillanueva_21.jpg

Using an ohmmeter set it to X10 to see much easier the leak from the diode in reverse bias.

Forward Bias : test the diode by connecting the red test prod of the tester to anode and then the black test prod to cathode of diode. You will see the pointer will reads a faily low resistance(above picture).
jdvillanueva_22.jpg

Reverse Bias : test the diode by connecting the red test prod of the tester to cathode and then the black test prod to anode of diode. You will see at the picture(above) that the pointer didn't react (remains in infinity). This is a good diode.


Bad(leaky) Diode
jdvillanueva_23.jpg

Forward Bias will reads fairly low resistance.
jdvillanueva_24.jpg

Reverse bias unlike the good diode the pointer will also reads a fairly low resistance.

After confirming that the diode caused the fuse from blowing I've decided to replaced all four diodes since I have a lots in my stocks.
jdvillanueva_25.jpg

Remember that when you installing the new diode on the board, make sure that you will make it in the right polarity.

jdvillanueva_26.jpg

This steps is also applicable in the DVD Player,Flat panel, Projection, LCD TV, you have to disregard only the posistor and degaussing coil.

Have a nice day!
Thanks for using Fixya.

Jdvillanueva

on Mar 02, 2011 | Flat Panel Televisions

1 Answer

I have a hisense 74 cm colour tv model TC2919H, I would like to know the STR number for the IC


If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Circuit diagrams of SMPS section of many popular brand devices are given. Search the site by type in the "brand name" of your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Aug 14, 2016 | Hisense Flat Panel Televisions

1 Answer

Why is my hisense hd tv display so dark? When I try to adjust the colors, they just get grayer.


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/
http://electronicshelponline.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.

Dec 24, 2015 | Hisense Flat Panel Televisions

1 Answer

I have a Hisense tv model-32k20dw. I can hear sounds from it and when I did the flashlight test I could see the picture. Already replaced pwr supply. What else could be wrong? Can I fix it?


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://electronicshelponline.blogspot.com/.
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.

Jul 26, 2015 | Hisense Flat Panel Televisions

1 Answer

Capacitor r good but the tv wont turn. On


Capacitors rarely go bad. Look for burnt components. I'd suspect you have a bad transistor or diode but don't over look the obvious things like a fuse. The ideal way to trouble shoot this is to get a huntron tracker and an identical board to compare readings. You might be able to get away with a meter with a diode tester if you don't have a huntron tracker. But since you would need an identical board to compare readings you're really better off buying a new board if you could find one.

Jul 04, 2013 | Flat Panel Televisions

1 Answer

Looking for pcb boards.where can i find them


Unfortunately you will be best buying the same model with a broken screen off eBay or other site. Hisense is a company based in china and as it is of low quality will rarely have any replacement parts available. You will be unable to source parts online as secondary manufacturers do not provide these. You may be able to swap parts from a semi-functional model however. You may be able to also fix the circuit board itself, as often times it will be a simple issue such as a blown fuse.

Mar 07, 2011 | Hisense TA42P40M 42 in. Plasma Television

1 Answer

I have a blue shadow outlining faces and pictures on my 50" is it color adjustment? how can I fix it - Please


No this is not a color adjustment sorry to say! it sounds like the circut board thet runs the color lenses inside your tv has some burnt out capciters and the circut board will need replaced! (the one thet controls the blue lens!) Please rate my response!
THANK YOIU!

Jan 14, 2009 | Hitachi 50V500 50 in. HD-Ready LCD...

1 Answer

Hisense TC2919H Picture and Tuning fualt


I think you should be looking at the tuner itself or on the tuner board for a fault. First check for dry solder joints and if this is not the problem the electrolytic caps next to the tuner may be at fault. Good luck.

Oct 04, 2008 | Hisense Flat Panel Televisions

Not finding what you are looking for?
Flat Panel Televisions Logo

Related Topics:

502 people viewed this question

Ask a Question

Usually answered in minutes!

Top Flat Panel Televisions Experts

The Knight
The Knight

Level 3 Expert

68153 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Jaime Hernandez

Level 3 Expert

2267 Answers

Are you a Flat Panel Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...