Question about Toshiba CZ27V51 27" TV

3 Answers

COld Solder/Short Here is a strange one. If I lean the whole TV forward, I have no problems. When I sit it correctly, the picture and sound shut off, and the LED blinks. It's probably a cold solder. The silver box that the cable input plugs into seems to be the issue. What is this silver box (It appears to be fuses?), and has anyone heard of this? Shaking the cable itself does no good, it only works if I lean it forward, which takes pressure off of the chassis. The tv is not old, and the picture and sound are fantastic. It's never seen hard use/abuse, and has never been moved since it was placed in it's current location. I'm good with solder, and a mechanic, so small tool use is not a problem, I just don't know what not to touch for safety reasons. Thanks.

Posted by on

  • Anonymous Dec 02, 2007

    Horizontal is going out on TV. Can this be fixed or do we need to spend the money to get a new TV.

×

Ad

3 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Ok, so it's the tuner. That makes perfect sense. With the back off, nothing seems loose. The PCB is basically to the right, under and behind the CRT. I had it working for about two hours, then it pulled it's old tricks. Should I pull the PCB, or do you think tapping with an insulated screwdriver on various components would do the trick? I'll be careful not to short a connection. I don't really like poking around in an unfamiliar region, but I can R & R any component, no matter how small the solder. I've fixed power supplies for my studio, and I've done audio gear. It's the high voltage that worries me. I don't want to smoke a component. Supporting it other than on it's base is a good idea. I'll suspend it from it's sides and see if "chassis" flex is what causes it, or if it's directly related to a component moving when it's level, and back again when it's leaned forward. You are correct that the PCB is mounted directly to the base.Thanks for the really good info.I appreciate the help.

Posted on Oct 22, 2006

Ad
  • Level 1:

    An expert who has achieved level 1.

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Scholar:

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

  • Contributor
  • 68 Answers

Before taking anything apart, if the TV is on legs, try propping it up in the normal position so the legs are just off the floor. If this does nothing it will show it is not pressure distorting the cabinet. If it does the movement of the cabinet must be shifting something on a PCB, such as a dry joint or a plug/socket. In modern sets there is no chassis; the Printed Circuit Boards are usually clipped and screwed directly onto projections inside the cabinet. The dangerous high voltages are usually well insulated and confined to one PCB. A PCB for control is usually in the bottom of the cabinet, and this is the one you should look at. It only has low safe voltage on it. The mains lead goes to the PCB which also has high voltages for the power supply; if this is in the bottom of the cabinet also then suspect a fault on it, but beware you really need an expert.

Posted on Oct 16, 2006

Ad
  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 337 Answers

The silver box where the cable plugs into is the TUNER,there are no fuses in there and the problem is not likely to be there,the loose conection could be anywhere but you have a few places to check,with the tv unplug from the wall you can safely check for loose conections in the power supply area and around the output transistor including the areas of the horizontal drive circuit and output transformer,those are the areas most likely to the symptoms you have but you can also check the edges of the chassis for a broken or crack board.Let Us know if you need more help.Be careful when you are checking for conections.

Posted on Oct 16, 2006

  • Omar Urrutia
    Omar Urrutia Oct 16, 2006

    Your rating is also important.

×

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.
Good luck!

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:

2 Answers

Sharp TV LC-40LE550U - No picture or audio on any inputs, replaced Power Board with no luck


The main board is the problem. That board is the source of audio to the speakers and it controls when the LED driver is powered.

Feb 12, 2018 | Sharp Televison & Video

1 Answer

Have an lcd2010a wharfedale colour tv since 2005. It is out of warranty. Problem. switch on tv obtain sound and picture for 1 to 2 hours or even less 45 min. Then suddenly no picture, but sound or nothing...


try removing and re-installing the lamp cover on the back.
its a known issue with whaferdale tv's during manufacture, the lamp cover is not seated properly causing the safety switch to not engage all the way, when the lamp cover heats up and expands, it fall away further from the switch tripping it, shutting the set down.
when you remove and re-install the lamp cover, after you take the single ***** out, tilt the cover out and forward from the top about 3/4 of the way out and then tilt it back into normal position and put the ***** back.

Mar 11, 2008 | Televison & Video

1 Answer

The tv has sound but no picture. For


LG LED TV has no picture (black screen) but still sound ...

www.tomsguide.com/answers/.../led-picture-black-screen-sound-fixed.ht...
My 32' LG LED TV has suddenly lost picture! The sound is all right but the Screen is pitch black. After switching it on the picture flashes for a second and then the screen goes completely black.

LCD Easy Fix (sound but no picture) - YouTube

? 4:52
https://www.youtube.com/watch?v=IBRE1Dcyxp4
Jan 13, 2012 - Uploaded by Clay Whitehead
TV Has Sound But No Picture Troubleshooting Guide - Duration: 2:30. by Repair.com 472,733 views. 2:30. LG LCD TV REPAIR -NO PICTURE ...

Dec 21, 2015 | LG 47LN5400 47" LED TV 1920x1080, 120 Hz....

1 Answer

LG 32LB530A Tv sound ok faint picture Led backlid off


Hi,
Back light led driver or the led array is faulty. check and confirm the voltage to the led back light from the power supply. normally 35V to 100V according to the brand and model of the tv. Check the voltage if the voltage is somewhere around the above mentioned voltage the then the tv have problem with the led array behind the screen . If the voltage is missing then the led driver is faulty. Normally the led drivers is found integrated to the power supply board. If so then you have to replace the power supply board as a whole.
www.electro-medical.blogspot.com

Oct 10, 2015 | LG Televison & Video

1 Answer

Audio stopped working


It sounds like a computer problem. Every time you shut down, the audio chip reboots. Then when it warms up, it fails again. If it's still under warranty, I'd take it in for a chip replacement. If not, you may be SOL and have to replace the whole thing (or replace the faulty circuitboard or chip yourself..

Oct 02, 2017 | Subaru Outback Cars & Trucks

1 Answer

STANDBY INDICATOR LIGHT BLINKS 15 TIMES WHEN TV IS TURN ON NO PICTURE OR SOUND


Hi,do you hear any strange noises? If you hear clicking or like wanting to turn on it could be the board that powers the lamp it's called the ballast.It's major symptoms are clicking,electrical sounds,shuts off and on and get the lamp indicator.But if you don't hear any strange noises,tv is around 6000 hrs,2-4 yrs,It's major symptoms are clicking,electrical sounds,shuts off and on and get the lamp indicator, it could be time to replace the lamp.

Dec 05, 2010 | Sony KDS-60A2000 60" HDTV

1 Answer

No picture or sound


Hi,do you hear any strange noises? If you hear clicking or like wanting to turn on it could be the board that powers the lamp it's called the ballast.Here's the instructions to replace it :http://www.fixyourdlp.com/guides/samsung/bp47-00033a.php It's major symptoms are clicking,electrical sounds,shuts off and on and get the lamp indicator. But if you don't hear any strange noises,tv is around 6000 hrs,2-4 yrs,It's major symptoms are clicking,electrical sounds,shuts off and on and get the lamp indicator, it could be time to replace the lamp.The lamp you need is XL2100 you can find it here:http://www.discount-merchant.com/Sony-XL-2100U-TV-Lamp-p/sony_xl-2100u_replacement_lamp.htm?Click=48173 .Have a blessed one!

May 03, 2010 | Sony Grand WEGA KDF-50WE655 50" Rear...

1 Answer

Sony tv problem


You have a loose solder connection or two. If I knew the model number of the set, I could be more specific. I would expect the repair would run about a hundred dollars, so make sure the picture quality is great before going to the expense.

Aug 02, 2008 | Televison & Video

1 Answer

Sharp Aquos LC-32D4OU


Comment by Guest, posted on Oct 25, 2008My Aquos has the same problem. I'm not sure how I discovered this, but when I lean the TV forward and hit the power button it will turn on every time. If the screen blacks out and I don't lean it forward when I hit the power button, the screen will just remain blank. It is very weird, but at least repeatable.

- Thank you, Guest. That did it. It definitely seems to be a problem with the TV. Tilting it and hitting the power button helped me get the video back.

Jun 05, 2008 | Sharp Aquos LC-32D40U Television

Not finding what you are looking for?
Toshiba CZ27V51 27" TV Logo

188 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toshiba Televison & Video Experts

The Knight
The Knight

Level 3 Expert

75178 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Jaime Hernandez

Level 3 Expert

2335 Answers

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

Answer questions

Manuals & User Guides

Loading...