Question about Televison & Video

1 Answer

Set TXN3075WHF set does not come on need schematic of power supply

Posted by on

  • bweddings Jul 20, 2010

    Thanks waiting for the email

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 10,594 Answers

Hi,
Let me know your email address to send you schematics of TXN3075WHF
Below is image of service manual page.
Thanks.

Set TXN3075WHF set does not - 2ab094c.jpg

Posted on Jul 15, 2010

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

How do i change fuse for txn3075whf


Inside of the TV usually near the power cable on the PCB. If you don't know what you're doing get it repaired.

Dec 29, 2012 | Samsung TXN3075WHF 30" TV

1 Answer

Samsung dtb-h550f need value of R28 in power supply


Download the schematic diagram to your set from here. It will have the details you want.

Jun 08, 2012 | Televison & Video

1 Answer

Sansui SV-3715LCD, I switch off the unit at the wall socket, when I plugged it in the next day there was no power, not even the LED indicator light on the front of the LCD activates. I checked the plug...


Continue to check--every set has a standby power supply that powers the remote circuit to turn set on and it runs 7/24 if set is plugged in.

Never a good idea to turn set of by taking the AC away--it can cause micro problems(micro processor).

The standby will provide voltage to the micro (low like 3-5 volts) and if a mechanical relay is there it also supplies it.

if NOTHING try to isolate that area in the main supply as they usually combine the standby in with the main power supply.

You may need to search for a schematic with GOOGLE (good luck on that) but if total dead begin there.

Worst case if problem is in standby you may have got the eprom or the micro when this happened

If further questions I will try to help.

Mar 23, 2012 | Televison & Video

1 Answer

No power, red led doesn't light. Power cord is


Manufactureres usually keep their schematics to themselves however you may be able to contact them to purchase a new power supply.

Jan 23, 2010 | Sceptre X37sv-Naga 37 in. LCD Television

1 Answer

Dim monitor


Hi

You just bought a new power supply for the monitor? Did you set the B+ voltage to the correct settings. Rebuilt power supplies for CRT monitors are not set correctly at the factory. Use your schematic to determine the proper B+ and then set this under load.

Thanks

Jul 21, 2009 | Toshiba Tekbright 15" CRT Monitor

1 Answer

Proton LCD Power supply


Here is a link for you! The problem could be capacitors with high ESR values won't provide adequate pulse energy transfer! Do you have any freeze spray? Spray the caps, then retry to see if the PS starts up. An ESR meter would be a good tool for future use!

https://www.google.com/#q=fsp194-3f01+power+supply+schematic

Apr 20, 2017 | Televison & Video

1 Answer

Schematics or diagram for a 480W PSU


I need a schemetic diagrm D15-1013/diablo ATX 250w Power supply
Thanks Louie.

Dec 18, 2008 | Computers & Internet

1 Answer

Bad picture


Hi Dan,
It sounds as if you have a bad filter capacitor in your power supply. Check the main filter caps rated at 150 volts and above. It's likely one is leaking and need immediate attention. I hope this helped. Good Luck
Ed
NC Electronic
Mills, Wyoming

Jan 06, 2008 | Samsung TXN3075WHF 30" TV

1 Answer

Toshiba


do you get a flashing led if so how many times?

this is a post from someone else:
Thought I would report my finding with this set. Maybe someone else is experiencing the same problem.

The set would turn on with no picture. No high voltage - no raster. By turning up the volume, you can hear some noise in the speakers. This set has many fuses and they all checked out ok.

I located some schematics on the net for the previous generation set - 40H80/56H80. I could not find any site with the 50H82 schematics without paying. The 40H80 seemed to match the 50H82 fairly closely. I checked the horizontal output transistor with a scope and found no signal. I traced the signal back to a board on the signal schematic called the DPC module. No HOT signal was being generated by this module. Per the schematic, I checked the voltage supply pins at this module and found everything ok except pin 6 which is supposed to be +12V. I traced this back to the power supply connector and found voltage (pin3 of 8 on BB30). Since I got the set for free and I was feeling risky, I shorted the +12V at the connector to pin 6 on the DPC. I got a small spark and the set shutoff, but I could hear static which indicated that the HOT briefly same on. I shorted out the connection again and turned the set on. This time is powered up and came back to life. I've run the set for a couple days so far and it appears to be working great.

I may have gotten very lucky, or I may be shorting out something that is not supposed to be shorted. I would really appreciate it if someone who has the real 50H82 schematic could check the connection between DPC pin 6 and the power supply connector BB30. If this is a real connection, I have to assume that the trace burned out somewhere. It vias up and down all over the place and is very hard to follow.

Dec 11, 2007 | Toshiba 55H70 55" Rear Projection...

1 Answer

Wont turn on


Hello zang,

 

This denotes a problem with the switching power supply or the high voltage power supply. what is happening is the safety relay is being actuated by the shutdown circuit. Any number of things can cause this proble but more then likely the problem is in the high voltage power supply section and or its associative circuitry. The switching power supply and the high voltages power supply have very dangerous voltages and I would not suggest that you work on the TV set unless you do have a background in electronics. If you do not I would suggest that you take the TV set to an electronics shop for repairs. If you do have a background in electronics, you will need the following items:

 

1) A schematic diagram (to know where voltage and signal test points are located and to have a reference of the levels.

 

2) A multimeter (to measure the DC voltage levels on the TV Set)

 

3) An oscilloscope (to measuer the AC voltage and signal levels in the TV set and compair them to the values in the schematic)

 

4) A signal generator (to generate a reference signal for troubleshooting)

 

I hope this helps,

 

Shuttle83

 

Oct 11, 2007 | Panasonic CT-32HX41 32" TV

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

23 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74136 Answers

Cindy Wells

Level 3 Expert

5103 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

Are you a Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...