Question about Quasar SP-2722 27" TV

1 Answer

Shrinking picture The picture began showing a few horizontal stripes at the top and bottom. Then the bottom portion shrunk up a few inches and the picture was being squeezed (shorter). As time went on, maybe and hour, the top stred to do the same thing. And then the whole picture was about 5" tall, so I turned it off thinking the picture was going to disappear completely. I turned the set on after a few minutes and the picture was normal. After about 15 seconds, it started shrinking again but then resized itself to normal and began to shrink again. It continues to cycle between a normal sized picture to short picture. The TV is probably about 7 years old purchased through Costco. Thanks fo any input.

Posted by on

  • Anonymous Apr 07, 2009

    same problem with my quasar tv. Where is the location of the solder spot? Where do i get the part?

×

Ad

1 Answer

  • 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

All symptoms indicate a problem in the vertical circuit,the first thing to look for will be loose conection on the vertical output IC,sometimes this IC goes bad completly and it needs to be replaced.If you are familiar with soldering electronics you can take care of it but if you are not too familiar you can play it safe and take it to a servicer ,it will be a lot less expensive than if they come to your house.Let Us know how it goes or if you need more information.

Posted on Oct 26, 2006

  • Omar Urrutia
    Omar Urrutia Oct 26, 2006

    Your rating response is also important.

×

Ad

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 there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Why are the movies half screen?


Movies that are created for "Wide Screen" viewing show up in letterbox on your TV. If you go to a theatre you notice it is a big rectangle. To be able to fit all of the widescreen movie on a TV it has to make the height smaller.


Because many people want to see the "complete" Movie, the "Letterbox Format" came about. I do NOT know what the word "Letterbox" actually means, or how that term was chosen. To get the complete Rectangle into that Square, they discovered that they could shrink the entire rectangle to fit that square. Meaning, what used to take 2 inches on your screen, now may only take 1.75 inches. Now a problem arrose. When you shrink the WIDTH to fit your dinky Square of a TV, the HEIGHT also has to be shrunk along with it, or else you're stretching the image as if it was on silly-putty ("Compression"). When the image was shrunk to fit the TV Screen, they were left with a gap at the top and bottom of the screen. So they simply fill it in with "Black". I guess the only alternative was to leave it snowy.

Nov 13, 2014 | Televison & Video

1 Answer

Apex ld4688


Sounds like a vertical scan out section ciruit problem. Contact any service technician.
Gopakumar Gopalan Google

Feb 25, 2014 | Televison & Video

1 Answer

Samsung TSL2793HF - Slight Right Side Pincushion and Horz Line Bottom to Top Until the TV Warms up


Yes, this is rare but I have seen it before--not fixable if it is what I think it is----It is what is called a Dome effect---the shadow mask in the picture tube is actually contracting and or expanding depending on temperature---

Directly behind the phosphor coating (the stripes that you see on the screen) is a metal screen--the holes or perforations in it line up with the stripes on the phosphor screen.

Some masks either have a material or a defect causing the dome effect----Not likely to be anything else---a Pin amp problem will not usually act the way you describe but a shadow mask inside the picture tube will act exactly that way.

Dec 02, 2012 | Televison & Video

3 Answers

Pictures shrinks.. Panasonic TC-20LM Television


Shrinking picture is a voltage regulation problem in the switch mode power supply, Possibly a cap used in the feedback circuit. Or an over current condition on the B+. This is a very tech intense repair because there is no magic bullet. If it is shrinking on bright scenes then you can bet it is a regulation problem, bright scenes draw more current from the power supply causing this effect. I would not suspect the horiz output because the regulation for this circuit usually comes from the main switch mode power supply. One diagnostic is to monitor the B+ going to the horizontal output and see if it fluctuates. If so you can bet it is a cap or optical coupler in the switch mode circuit.

Oct 10, 2009 | Panasonic Televison & Video

1 Answer

Picture shrinks horizontally every few seconds.


You are changing parts in the wrong circuit. The problem is in the vertical circuit. Look for the vertical IC and resolder the pins first. It should be an LA7837 or something similar. Also, check the 100ufd and 47ufd caps in the same circuit.

Keep us posted.
Dan

Jan 19, 2009 | Panasonic CT-20G11 TV

1 Answer

GE 31


check electrolitc capacitors in horizontal circuit

May 09, 2008 | GE 31GT659 31" TV

2 Answers

Picture shrinking


HI: Well that is a good indication you have a intermittent connection in the circuit board. Its time to take it to a repair shop. He will re-solder the poor connections. You should not need parts. Good Luck.

Mar 08, 2008 | Televison & Video

2 Answers

NO PICTURE HAS SOUND


When you say small do you mean shrunk up top and bottom as well as from side to side. You definitely have a deflection problem either horizontal or vertical.If the picture just shrunk top and bottom you have a vertical deflection problem. Do you have the service manual for your model? If not let me know and I will email you one. Describe the shrinking issue a little more and I should be able to give you some guidance.

Feb 06, 2008 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

Sound but no picture


Basic repair for skilled TV repairman = solder connections on
vertical output IC.........Can be done in home.....T.

Nov 28, 2007 | Sony KV-35S42 35" TV

1 Answer

Picture is shrinking from the bottom


Hi you have lose solder in yor vertical section have a tech resolder it or that problem will cost you .hope you have already have it remedied.

Nov 14, 2006 | Toshiba 36A40 36" TV

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

240 people viewed this question

Ask a Question

Usually answered in minutes!

Top Quasar Televison & Video Experts

Steve Allison
Steve Allison

Level 3 Expert

5569 Answers

The Knight
The Knight

Level 3 Expert

76001 Answers

 Grubhead
Grubhead

Level 3 Expert

5615 Answers

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

Answer questions

Manuals & User Guides

Loading...