Question about Televison & Video

1 Answer

My toshiba 66 h14 has power but won't have screen. My CRT lights work. Is there. Troubleshooting for the circuit board.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Televison & ... Master
  • 74,106 Answers

Visit the site named 'Electro-help' for more details. Click this link. View it in "Timeslide" option, which can be selected from the drop down box menu by the [Sidebar] tag, at the top left corner of the display window. It will make search easy. There are more than 1000 posts to different brand TVs now. Pull up older posts there.

Posted on Oct 27, 2012

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

Toshiba tv screen goes dark but has sound. If I shut tv off and turn back on it works for a short time then same problem.


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.

May 21, 2016 | Toshiba Televison & Video

1 Answer

Toshiba 55 55S41U Black screen no back light no picture green power light


have you checked for dry joints or blown capacitors , with a power surge depending what kind voltage or amperage the circuit received it might have even blown screen connect it will certainly fry a lot of components ,have you looked for holes in capacitors ,resistors or burnt tracks between components . that's about all I can think of to check also some power panels have built in fuses to stop surges if you could obtain a circuit diagram that should help you also you could google your query and see if you get any assistance it costs nothing and you could get your TV up and running again . All the best .

Dec 19, 2015 | Toshiba Televison & Video

1 Answer

I have Toshiba 32A42 CRT TV that stopped working


This unit has a horizontal/high voltage issue. This is a dangerous circuit to work with so you should have a shop check it for you. Thanks for using fixya.

Nov 09, 2009 | Toshiba 32A42 32" TV

2 Answers

Toshiba tv - power on - black screen and power light blinking -


Read below and decide if you want to tackle the problem yourself if so I’ll help along the way with what info I have. If not contact the nearest repair shop armed with the info below.

A dead set (no picture no sound) can indicate any number of problems – Usually the set is in shutdown or protection mode – this means that the internal circuits have detected a problem with a supply voltage missing, drawing too much current, going over voltage or a short condition.
The first thing to do is power off the set unplug it for 5min. than replug and try again. This in effect resets the main micro and will sometime unlatch a fault and resume working. There are certain common problems based on the make model – for instance convergence output IC’s(CRT projection TV’s) can cause a dead set symptom in many models. Vertical output IC failure can also cause the same symptom (CRT standard and Projection).
The only way to determine the real cause is :
By an educated guess based on experience or by directly troubleshooting the set – checking fuses, measuring voltages and checking for shorts. Many of the intermittent problems such as, int.(Intermittent) no sound or picture, int. picture shrunken or misshaped. These problems are generally due to cold (bad) solder joints (all TV’s and electronics) that break down under slight temperature changes or vibration and are usually verified by physically tapping the suspected area on the circuit board, or by quickly heating or cooling a suspected component or area ( cold spray and hot air gun). The other main culprit is leaky or dried out capacitors or capacitors that change value depending on temperature. These can sometimes be seen as bulged or leaky and have an acrid odour.

Sep 27, 2009 | Toshiba 36AX60 36" TV

1 Answer

Toshiba TV will not turn on


Try to have the TV unplugged over night. If that does not solve it you may have to have the TV power supply circuit inspected for leaking capacitors, loose solders or may be a bad IC.

Aug 29, 2009 | Toshiba 32A33 32" TV

1 Answer

Blue crt assmbly maybe?


its very possible that the blue CRT is horting the set out. Heres how you can test it. Remove the speaker grille and access panel behind the grille and you will see the crts. remove the blue crt circuit board from the end of the blue crt and make sure it isnt touching anything then try powering up the set if it doesnt shut down then you have found the problem and you will need a new crt. or you can switch the blue circuit with the green and try it iwth the blue on green and the green on the blue then if the screen turns green before shutting down you will know that its a problem in the blue drive circuit and not the crt. lety me know if you need further assistance.

Apr 01, 2008 | Toshiba 46H84 46" Rear Projection...

1 Answer

SCreen turns red then shuts off


The 46H84 has 3 CRTs instead of a lamp. Red, Green and Blue. Your red CRT is shorting out shutting down the set.Here is how you test that theory. Remove the speaker grille, there will be an access panel behind the grille remove that and you will see the CRTs red is usually on the left. hit the power momentarally to locate which tube is red. then power down and unplug the power cord. Carefully remove the tubes Circuit board. ( you may have to carefully slice the glob of silicone applied at the factory to get the circuit board off) Once you have the circuit board off the Red CRT make sure it isnt touching anything and try powering up the set. If the set stays on and the other 2 CRTs light up. That tells you the RED crt is shorted and thats whats shutting your set down. Let me know if I can assist you further.

Mar 25, 2008 | Toshiba 46H84 46" Rear Projection...

1 Answer

Toshiba cx35f70 35"


It could be a bad solder connection on either the crt drive board that attaches to the neck of the picture tube, the video processing circuits on the main printed circuit board or the picture tube itself. If you can lightly bang the sides or top of the set to get the symptom to come/go, then it is most likely a bad connectiion. If, when the screen goes green, you see fine white lines diagnonally across the screen about a half inch apart, then it is likely the picture tube.

Jan 18, 2007 | Toshiba CX35F70 35" 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

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...