Question about Jensen Q2749J 27" TV

1 Answer

Picture problem The picture is very dark...seems to flash/vibrate...? tube problem

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Jensen Master
  • 1,667 Answers

Usualy this is a power supply, or video processing fault, or CRT bias circuit fault. The set has to be properly troubleshooted to determine the fault.

Jerry G.

Posted on Apr 19, 2008

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

I have a KDF-50E2000 that has two problems. 1) makes a vibration noise when the cooling fan runs. 2) The picture seems excessively dark during daylight hours. Especially during scenes of night time...


For the vibration noise, may guess would be the color wheel or one of the Fans.

As for the dark picture, it could be a bad lamp, dirty mirror or lens.

www.aaatvservice.com

Jan 26, 2012 | Sony Televison & Video

1 Answer

Will not retain screen image. Flashes the content when you push the on/off button and is clearly projecting data, but just in flashes.


It appears you may have a bad backlight. If you can see the picture content with a strong light shining at an angle to the screen while it is dark, then it is definitely the backlight. Most sets shut down shortly after getting a failure signal from the backlight inverter although you do not mention that happening.

The backlight uses two or more Cold Cathode Fluorescent Lamp (CCFL) tubes, and they'll have the same flickering as a failing standard fluorescent tube. If the light has a pinkish cast to it, this is a common sign that one or both of the tubes is bad. You may see the flashing on the top or the bottom and the other half of the screen will be dark; this means one tube is dead and the other is dying.

May 24, 2011 | Sony SDM-HS73P 17" LCD Monitor

1 Answer

Flash/dark pictures


If this camera is new, take it back.

Apr 28, 2010 | Kodak EasyShare C613 Digital Camera

2 Answers

Picture on all channels is dark


seems like its the inverter thats either not working or the tubes are faulty

Mar 26, 2010 | LG 42LG50 42 in. LCD HDTV

1 Answer

Pictures very dark even with a light meter


Digital cameras operate on a delayed shutter. Your Camera and flash are not synchronized. Try adjusting flash to a slower speed. Or the cameras Fstop value to get them insync.

If you half push the shutter the rangefinder and focus circuits kick in and will adjust to available light and give you your best picture. Do not ever push the shutter in one step. press it slightly to get the best focus and then push the last millimeter to get the picture!

Dec 29, 2009 | Fuji FinePix S3 Pro Digital Camera

1 Answer

A630 Indoor pictures are too dark in Auto, Flash


try using night mode indoors. otherwise, simply get into setup and go back to factory settings, and use AUTO mode. hope it helps

Oct 07, 2009 | Canon PowerShot A630 Digital Camera

2 Answers

Picture is dark


Does not seem like a bad tube alone. Could also be that the Video output Transistors Supply Filter capacitor having dried out. It is a 100mfd 160V capacitor, which on replacement will improve the brightness of the immage. And yes, you could also try increasing the heater voltage (Filament Voltage)of the Pictuire tube, this will definitely increase brightness, but will reduce the life of the Picture tube. You gotta think - 10 year old TV, should I repair or exchange and get a new one???

Mar 03, 2007 | Zenith Z27X22D 27" TV

2 Answers

Can't fire properly at 90 degrees


Did you buy this used? Maybe the following problems: wires inside are loose or cold soldered. Flash tube has coated with film coating or flash head(inside)is dirty. Alexander atdlee@netzero.com

Jan 13, 2007 | Metz Mecablitz 60CT4 TTL Flash

1 Answer

Darkening tv picture


The Picture tubes(not bulbs) do and probably are weak. There replace should only be done by a trained service person. One reason would be the hI Voltage issues related to the crt's, as these tubes store alot of HI voltage even after its unplugged for a while, and another reason would be that these tube can very easy implode then explode and that wouldnt be a pretty sight. Third would be the alighnment involved after all three tubes are replace. There ba cross hatch generator and alot of time involved with the alighnment. Please seek a pro to assit you when your ready to spend at least 900 TO 1000 bucks. Good Luck

Jun 30, 2006 | Hitachi 53FDX20B 53" Rear Projection...

Not finding what you are looking for?
Jensen Q2749J 27" TV Logo

Related Topics:

67 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jensen Televison & Video Experts

The Knight
The Knight

Level 3 Expert

73150 Answers

Jaime Hernandez

Level 3 Expert

2307 Answers

Cindy Wells

Level 3 Expert

4988 Answers

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

Answer questions

Manuals & User Guides

Loading...