Question about Toshiba 27A50 TV

Open Question

Intermittent picture and sound Toshiba model 27A50

The picture plays fine for hours then I get a black screen and no sound with a flashing red power light , the TV will eventually power down. Is this a major problem? Is it worth repairing or should I just purchase another TV (don't want to do that)?

I read online that another person had a similar problem and it was some type of cold solder joint. Does this sound like my problem?

Posted by on

4 Suggested Answers

  • 1 Answer

SOURCE: TOSHIBA TV NO SOUND NO PICTURE, POWER LIGHT IS ON

I have a problem

Posted on Aug 11, 2008


andyroid85
  • 7 Answers

SOURCE: Toshiba 32a32 chassis tac 245 powers up for 1 secopnd then red power light flashes.

just fixed one with that problem it was the vertical output ic Q301
that was shorted. try wicking it out. it is a LA7833S.
Postings say to be sure to use the Toshiba part

Posted on Aug 28, 2008

  • 2 Answers

SOURCE: Toshiba 36HF71 has sound but no picture

Same problem with mine. Relays click, sound, no picture and a flashing power LED. I finally found a schematic online. I went through the high voltage circuits and found the power transistor 2SC5570 was shorted out. There is also a pico fuse in that area but my was not open. I replaced the transistor and prayed the flyback transformer was not shorted. It wasn't, I'm watching my old 36" right now. Not a bad fix (17.00) bucks. Wonder what a service tech would have charged ;)

Posted on Jun 14, 2009

rhozel2010
  • 267 Answers

SOURCE: Convergence problem... Could it be bad solder joints???

if you have resolder it and still the trouble exist then that is the time to replace the ic.

Posted on Jul 31, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Toshiba 27A50 picture is thin line on screen


Problem in vertical circuit--look for the vertical chip to have bad or broken solder connections....see typical one (usually mounted to metal)......
11_4_2012_4_42_59_pm.jpgusually anything from 7-13 pins and almost all are flat like this one-secured with screw at top to metal plate.

Nov 03, 2012 | Televison & Video

2 Answers

Sony tv model # kv36fs320 no picture sound is there. Standby timer red light flashes 5 times.


The power seems ok as it was working fine this morning had kids channel on for my daughter for about 1-2 hours while I was pottering about cleaning then daughter told me TV had gone black

May 15, 2009 | Sony FD Trinitron WEGA KV-36FS120 36" TV

1 Answer

Toshiba 36HF71 has sound but no picture


Same problem with mine. Relays click, sound, no picture and a flashing power LED. I finally found a schematic online. I went through the high voltage circuits and found the power transistor 2SC5570 was shorted out. There is also a pico fuse in that area but my was not open. I replaced the transistor and prayed the flyback transformer was not shorted. It wasn't, I'm watching my old 36" right now. Not a bad fix (17.00) bucks. Wonder what a service tech would have charged ;)

Jan 02, 2009 | Toshiba 36HF71 36" TV

2 Answers

Tv screen get smaller


not the flyback
it is either the vertical ic
or related caps
it is repairable probally between $75 and $100

what size screen and how old (is it worth it? that your call

Dec 20, 2008 | Toshiba 27A50 TV

1 Answer

Sony kv35s66: No picture, just sound and red blinking


This should be a quick fix. Try resoldering the vertical IC. This is a small flat IC attached to a heat sink with about 11 pins. It should be marked LA7837 or something similar. That should resolve the problem.

Keep us posted.
Dan

Sep 08, 2008 | Televison & Video

2 Answers

Toshiba 2877DB


Before you do anything else, make sure you do a hard reset. Unplug your television for an hour or two and then plug it back in. If you are still seeing the blinking lights and no picture or sound then we know of several possible prolbems that it might be. All of which require a local repair service to open the tv and replace a part.

Thanks,

Jul 03, 2008 | Televison & Video

1 Answer

Picture and sound does not always come "on"


Trimmer, you`ve narrowed it down to a certain section and your absolutely correct that it is a bad solder joint, there are 2 things you can do, first get a bright light and a magnifying glass and go over the bottom of the board and look for it, should be fairly obvious with the magnifier, if not go here and order a can of "Freeze mist" www.partstore.com this is a great "tool" for finding intermittents, it`s coolant in a spray can, have someone watch the screen while you spray in the area of the intermittent, when you hit the bad part the set will work, re-solder the part and any joints around it that look bad, end of problem, good luck with it, BMW Rider

Dec 06, 2007 | Toshiba 27A50 TV

2 Answers

Flashing power indicator


Sounds like a power supply problem unless there is a short in the deflection circuits causing the power light to flash. I'm afraid it'll take a technican to figure out what is wrong. If it's more than 7 years old, you might consider replacing it.

Jan 25, 2007 | Toshiba CX27F60 TV

2 Answers

Black has turned blue and shutting off


That usually means the x-ray protect circuit was triggered. The set is going into protect shutdown for some reason. It may be a valid trigger to a lame problem or a fault in the detection circuit itself. I would hang a scope on there and just watch to see if there is a strange movement in voltage values, and if so, troubleshoot it from there. The blue picture is a result of a convergence problem. If you don't know much abou TV repair, I would suggest taking it to a Toshiba authorized servicer for proper diagnosis.

Jan 29, 2006 | Toshiba 32A43 32" TV

Not finding what you are looking for?
Toshiba 27A50 TV Logo

Related Topics:

61 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toshiba Televison & Video Experts

The Knight
The Knight

Level 3 Expert

69654 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

matt martin
matt martin

Level 3 Expert

1198 Answers

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

Answer questions

Manuals & User Guides

Loading...