Question about Toshiba 36AF42 36" TV

1 Answer

Picture goes black

The picture on my Toshiba 36AF42 constantly goes black as if the TV is powered down but the power "on" light flashes. Neither the power switch on the TV nor the remote will turn the TV on or off. I unplug the TV from the wall, plug it back in and the TV works for awhile.

Posted by on

  • Frederick Zarro
    Frederick Zarro Jan 24, 2016

    I'm sure it's too late for this person (2008), but for others having this problem, the symptoms he describes may very well be due to the main capacitor on the power supply going bad (200V, 470uF). It's the largest capacitor on the power supply, and if you remove the cover from the back of the TV and look on the left side (being careful not to touch the picture tube or other dangerous areas), it's easy to find. Look at the top of the capacitor (or any other capacitors) to see if the vent on top is raised up, which indicates that too much pressure built up inside the capacitor, and it "blew". Sometimes they're not gone completely, and can power up the TV occasionally, but eventually they will die completely and you won't have any picture. The good news is that for the price of a new, GOOD brand capacitor ($5), I was able to remove the bad capacitor and solder in the new one with my soldering gun, and the set works PERFECTLY now!!! If you're not comfortable with soldering, any friend with basic soldering skills can do this job, and all they need to do is remove a few screws holding down the circuit board so they can get access to the bottom side, to unsolder the old capacitor and solder in the new one (using solder flux, of course). Hope that helps someone!

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 89 Answers

GO TO MENU, THEN SETUP, SCROLL DOWN TO TIMER AND MAKE SURE IT IS ON 0 (ZERO) MIN. SOUNDS LIKE ITS PROGRAMMED TO GO SLEEPAFTER A CERTAIN TIME. THIS TV ALSO CUTS OFF AUTOMATICALLY IN 15 MIN. IF ITS TUNED TO A VACANT CHANNEL( NO PICTURE).

Posted on Dec 27, 2008

  • Frederick Zarro
    Frederick Zarro Dec 13, 2015

    How can you "Go to Menu", if the TV won't turn on at all? I guess you can't...

×

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

My tv power is on but picture does not show only red power light flashing if i unplug tv comes on for a second and then picture gos right back off


hi
you have a shut down problem cause by a defective power suply that probably goes to high and activate a x ray or fail safe potection

Sep 29, 2010 | JVC AV-27920 27" TV

1 Answer

No picture or sound


Hi,

Looks like a power supply issue the only solution to fix this up is to get it repaired.

Goodluck..

May 03, 2008 | Toshiba 32HFX72 32" TV

1 Answer

Sony Trinitron TV. No picture; red standby/timer light flashes.


My Sony trinitron has the stero lite on steady and standby lite flashes four times then pauses and repeats. Can you tell me the circuit/condition causing the set to not turn on.

Jul 15, 2009 | Sony FD Trinitron WEGA KV-36XBR800 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

1 Answer

Picture blinks on and off on my Trinitron Color TV, KV-35S36


My Trinitron Sony Television flashes off and on constantly and has horizontal lines.

Aug 31, 2008 | Televison & Video

1 Answer

Tv power light flashes on and off, but no picture or sound


the problem is, the system control or "jungle" ic as the call it was malfunction need to replace.need more help....dnlsabangan@yahoo,com.

Feb 15, 2008 | Toshiba 36A61 36" TV

1 Answer

Sony Trinitron KV35V35


Could be a weak Picture tube . You can try turning up the screen control but don't turn it up too much you'll get retrace lines in the picture . Turn it alittle at time until picture comes on then turn it down until the retrace lines go away . Then try turning the tv on and off to make sure it comes back on. Be careful you can get shocked if you do this while it is on and you touch one of the circuits . The control is on the flyback or the module thats on the picture tube it will say screen by it . If this does not work you could have vidoe problems or just the picture is no good . Good luck

Jan 20, 2008 | Sony KV-35V35 TV

1 Answer

Does anyone know why my tv screen goes black while the power light flashes on and off?


it seems that there is a problem in power supply. if it is ok check horizontal section it is a simple problem &can be fixed by skilled tech.

Sep 28, 2007 | Toshiba 32A50 32" 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

Not finding what you are looking for?
Toshiba 36AF42 36" TV Logo

200 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toshiba Televison & Video Experts

The Knight
The Knight

Level 3 Expert

69845 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...