Question about Televison & Video

1 Answer

My blacks aren't as deep and strong on my tube tv

I took my Zenith tv in for repair last week. It smelled like burning plastic. It turns out I needed the transformer replaced and some caps replaced. I got it back and it works ok except I noticed the blacks aren't as strong and deep as they were before. What could be the problem? I checked all my connections and they were fine.

Posted by on

  • 4 more comments 
  • Keith Jul 20, 2013

    I thought maybe the techs messed with my color/contrast settings but they didn't

  • Keith Jul 20, 2013

    I just have my tv hooked up to my dvd player via a s-video cable may tv is so old school it doesn't even have component hookups..

  • Keith Jul 20, 2013

    I meant to type the TRANSISTOR and HV caps needed replacing

  • Keith Jul 20, 2013

    I noticed right away the blacks got duller when I watched a widescreen dvd; the black bars at the top and bottom just weren't as black as they used to be. It's weird the other colors look fine but it's just my blacks that don't look right.

  • Keith Jul 20, 2013

    zenith model b32a34

  • Keith Jul 20, 2013

    Here is exactly what the techs did:"replaced Transistor and HV caps. Clean and vacuum unit. Ran burn in test. OK"

×

Ad

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.

  • Televison & ... Master
  • 15,644 Answers

The tech did not reset the contrast

Posted on Jul 21, 2013

Testimonial: "Thanks for the reply. My tech guy is on vacation but I will bring this up to him. But now I have another problem with this tv: I noticed that the framing is a little off now. For example: you know how when you watch a tv and the stations logo is on the bottom right of the screen? CBS, ABC, MTV, whatever? Well, now this logo is cut off on my tv, I can only see about half of it. Also, when I watch a tv show or dvd in the widescreen format I noticed that the black bars at the bottom of the screen are slightly LARGER than the black bars at the TOP of the screen (if that makes sense). This suggests framing issues. Does my repair guy need to tweek something inside my tv?"

Ad

6 Suggested Answers

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

Ad
  • 275 Answers

SOURCE: Sony 36" tube TV

It definitely does not seem to be a problem with the Picture Tube. More like a cold solder. It is definitley not a job for a layman. Also, get a good technician to have a look, as locating cold solders is a labourous and time consuming process. It could also be possible that the main DC filter capacitor is getting dry, and may require replacement.

Posted on Aug 15, 2006

techman
  • 3130 Answers

SOURCE: Sony KV35V35 TV

Im sorry to tell you my freind, these sets are so common for the tubes to cause this problem.. The repair guy should have told you that they shot the tube and there is no warranty on a repair such as this.. Do yourseld your wife and your wallet a favor. get rid of this set as they will string you along so far till you get fed up. Again no disrespect intended at all. Just some freindly insite. Good Luck Please do not forget to rate this thread.

Posted on Oct 17, 2006

  • 1 Answer

SOURCE: Zenith TV has a big black box in the middle of the screen.

After reading other postings, we figured out that it was the caption box, went to menu and turned it off.
Thanks for the great site, we wouldn't have figured it out without it !

Jen

Posted on Nov 16, 2008

SOURCE: MAGNAVOX TV BURNING SMELL TV WENT POP AND WENT OFF

Well that pop had something to do with the power components inside the TV frying. I would have to say there is nothing you can do to repair it as its dangerous to work on such things.
I wouln't waste my time bringing it to a repair shop they will probably tell you to just buy a new one.

Posted on Jan 05, 2009

gopakumarg43
  • 74243 Answers

SOURCE: My picture tube displays all

Hello
A thin horizontal line across the screen denote that the vertical swep or output has damaged, or there are some loose solder points to vertical output section. Loose solder problems are very common to the vertical output sections of most of the picture tube based TVs. Just open your Tv, and pull out the main baord out of it, which has the vertical output section circuit. You must have some knoldge in electronics to proceed. Locate the vertical output section. usually, this section will be composed of an IC, which will be screwed on to a metal heatslink, to radiate heat out of it when it works. Check whether there is any loose solder terminals at this section, especially look for it at the solder terminals of IC and other components around it.
It is very difficult to detect the loose solder points, as some of them may be so microscopic to detect. Just do, what we do at service table, with this type of fault comes to us. Just resolder most of the suspected solder terminals by applying a little more solder without making any sokder bridge short between adjecent solder terminals.
If this does not help you, check the input voltage to the vertical IC. If found OK, replace the vertical output IC. If there is no voltage to this IC, check the track that brings voltage to that IC. Usually, this voltage will come from one amoung the terminals of LOT [Line Output Transformer]. Check the track, rectifier diode, limiting resistor etc. This is really a skilled work, and you should have all tools for an electronic work, and a skill to detect the faulty component. OK

Posted on Sep 16, 2011

Testimonial: "Thanks. Information was direct and helpfull"

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My hm0810b hammers softly and smells like its burning


Stop running it! Don't use tools if they smell like something is burning. Often times you'll make it worse and will make the repair more costly. It could be as simple as replacing the brushes.

To check for worn brushes, remove the black metal cover on the bottom. Then unscrew the black plastic brush caps. Worn brushes will be very low and not have mush carbon left, have a broken spring, or may be sticking in the brush holder and aren't sliding in and out well enough.

If it's something more than that, take it in for repair.

Jan 09, 2012 | Makita HM0810B 11 lb. Demolition Hammer

2 Answers

Admiral lnc6760b71 Problems - Strong smell of burning plastic or rubber last week. Now the machine will stop when full of water and not respond. Later it will continue by itself. I took of a small panel...


Same problem, same model admiral. The smell is motor overheating. Once cool enough, it will continue with it's cycle. I took the top off and watched it run. The motor stopped and smoke rose from the motor located at the front right corner. I am scrapping mine and buying another washing machine. This admiral has been trouble since we bought it 5 years ago.

Jul 11, 2009 | Washing Machines

2 Answers

My 61 inch RCA HD TV started to shut of by itself.


RCA hdtv has a crackle then smell like something burning and then shuts off. What could the problem be

Mar 28, 2009 | RCA HD61W66 61" Projection HDTV

2 Answers

JVC TV AV-32870 will not turn on. blinking timer light


Worth taking it in since it is hard to find a new TV for less than $300. I have a 32 inch JVC iart that for about 2 years would turn itself off and the timer light would blink. Only thing that worked would be to disconnect and turn back on. Eventually, the tv "popped" I could smell something that burned out and within 3 weeks tv went "dead" Took it to a tv repair place and replaced power unit for $150. I had similar problem with a 19 inch Philips and that tv has been going strong for 4 years since repair.

Good Luck

Oct 17, 2008 | JVC AV-32820 32" TV

1 Answer

Zenith r57w46


replace convergence i.c.s. and safety resistros around block

Jul 07, 2008 | Zenith R57W46 57" Rear Projection...

2 Answers

Strong ozone-like burning smell


Sounds to me like the motherboard inside the unit is on it's way to thermal overload. This is a common problem with this particular model. You'll smell electronics burning and one day it'll quit altogether with a burst of smoke. I had this happen to me and I traced the problem back to a faulty triac (transistor-like device) that overheated and caused the circuit board and wiring harness to burn up from excessive current draw. I repaired my motherboard with a new triac ($6) and rewired the harnesses. A cooling fan on the heatsink of the board would solve this problem.

Nov 12, 2007 | Equator EZ 3612 CEE Front Load...

1 Answer

ProScan PS32500 32"-Picture has white static line & Static/burning smell


It sounds like the circuit board is arching over somewhere. It could be as simply as cleaning and digging out the carbon mark to stop the arching. This is most likely the screen or focus voltage causing this, if there are no parts that have broken down. This will damage the printed circuit board and make things worse the more you let this cook. This could be dangerous for you to mess with because of the high voltage present, so my best advise would be to get this into the repair shop as soon as possible before this board burns up. It should not cost all that much if the CRT board can be repaired. Good Luck

Mar 21, 2007 | Proscan PS32500 32" TV

1 Answer

No picture or sound


If you had a burning smell, well the board is toast. These sets are made to replace the entire board at one time. Before installing the replacement module, the picture tube should be checked. A defective picture tube ( such as a G1 short) may cause a failure in the power supply section.

Sep 07, 2006 | Zenith C32V36 32" TV

3 Answers

TV has green sceen and turns off by itself


you have the famous zenith shorted picture tube

Aug 07, 2006 | Zenith C27V22 27" TV

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

Related Topics:

34 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74243 Answers

Cindy Wells

Level 3 Expert

5126 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...