Question about Televison & Video

1 Answer

TOSHIBA 50A9UA REAR PROJECTION TV Fault: No Pix. HT present and horizontal line for split second only at switch off. Checked voltage at each pin of Frame Output IC and found all missing or very low, less than 1v. I do not have schematic diagram for this set and would appreciate any lead as to possible open circuit supply resistors or other cause. Thank you in advance

Posted by on

  • thedom_1 Aug 27, 2010

    Thank you for your attempt at answering my question, I am myself a TV Tech but did not have a schematic for this one. I have since found the problem as first suspected by me, two open circuit fusible links in the Power Supply for the 16v

×

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
  • 4,889 Answers

Ic Shorts can be detected by placing one of the multi-meter probes on the common ground and the other on the Vcc Pin of the IC. I suggest that you start with the voltage regulator ICs.

Posted on Aug 19, 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

I have a Toshiba TP50H50 rear projection TV. The power light blinks, but the set will not turn on. I have tried resetting by unpluging the set, but that didn't help. How can the problem be identified and...


projection TV`s have integrated protection circuits
built into the circuit design, these circuits turn the
power off automatically when a fault has bin detected this
is in order to prevent a more costly repair, these circuits monitor
power supply , vertical and horizontal deflection
over voltage, or x ray, and also faults with convergance cercuits.
Diagnosing these faults require test equipment and a good knowledge of electronic repair techniques, and also a repair manual.

Apr 28, 2010 | Toshiba 43H70 43" Rear Projection...

1 Answer

What can cause horizontal white lines in a projection television? The TV is about 10 years old, and I am told it may be the internal power source. Could that be true?


can you see a pix or is it all white with lines running diagnally about every 1.5 inches--if you do not have a pix only lines problem is the 200 volt line feeding the crts(off flyback transfofmer)

Sep 02, 2009 | Sony KP-61XBR300 61" Rear Projection...

1 Answer

Our Toshiba 36" model CZ35V61 blinked then the picture went away. We do still have sound. Any suggestions on what has happened and how to fix it. Expensive? Anyone have a tv repair shop in the Dallas area...


if this is a crt type television set, then most probably the horizontal circuit is at fault. high voltage must be present for raster to come out. since sound is present, we can assume that the low voltage is functional but still this must be checked to see if there is supply to the collector of the horizontal output transistor. it is the low voltage supply that offers this power. let the qualified person do it for you.

Jun 08, 2009 | Toshiba CZ36V61 TV

1 Answer

Mitsubishi VS-60609 60 in. no pix /has sound


My Mitsubishi TV model VS 60609 is showing double vision on the screen.

Feb 24, 2009 | Mitsubishi VS-60609 60" Rear Projection...

1 Answer

Red lines


if you go to a n unused input ie ( video1) and the lines are there , it is a bias problem with the red pix tube. either the tube is bad or the sceen adjustment is up too high.

Jul 24, 2008 | Toshiba 50H82 50" Rear Projection...

1 Answer

Lines on tv


Set starts, horizontal and vertical deflection work, HT ok, crt heaters ok, but no sound or picture
I turned the G2 voltage up and noticed a white screen with flyback lines, frame ok. I detected two badly soldered double diode rectifiers in the secondary part of the power supply ! I checked all other joints, and everything was ok !! success
White horizontal line (no vertical deflection)
Check / replace R548, R549
Sound but no picture except for a couple of horizontal colour lines
Replaced the frame chip TDA8356, set now ok

Nov 23, 2007 | Mitsubishi WS-65511 65" Rear Projection...

1 Answer

Model 55X70 Toshiba Projection tv


dont know about warranties but horizontal lines means your horizontal frequency which runs about everything has drifted off sync and if too high or low it will activate shut down circuits in high voltage and power suppy, even causing HOT transistor to short. good luck and call a tech.

Sep 01, 2007 | Toshiba 55HX70 55" Rear Projection...

2 Answers

Toshiba 42h81


Hello, one of possible solutions is to replace capacitors (10uF/50V) on HYPER (PD0246) module. Please ask the tech to check/replace them. If you need more info please advice.

Apr 27, 2007 | Toshiba 42H81 42" Rear Projection...

2 Answers

Wavy lines


This TV uses small voltage regulators. On each side of the regulators is the input voltage and the regulated output voltage on the other side. There are capacitors used for stabilization on the input and output. Change these capacitors.

Oct 25, 2006 | Toshiba 43H70 43" Rear Projection...

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

Related Topics:

65 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74106 Answers

Cindy Wells

Level 3 Expert

5097 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...