Question about Televison & Video

2 Answers

No Picture I have a mitsubishi projection tv that has raster but no picture, I have checked tuner and video board, but no luck, I can pull up the menu, but it still won't program any channel to memory, it seems like its not connected to cable, but I know it is.

Posted by on

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    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.

  • Expert
  • 74 Answers

Without a model number of the set you own, it makes it difficult to suggest a remedy since Mitsubishi made a substantial number of projection tv's over the years. Model components change from one to another and from one year to the next. In addition, since this is more of a clarification post, what kind of raster is it, snowy, plain or muted due to of lack of signal? Can you input a video source (DVD, VCR, Camcorder) and have it show on the screen? When you say you checked the tuner, what did you check?

Posted on Oct 16, 2008

  • 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.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 6,966 Answers

Hi,

Let us try eliminating the video process by connecting an external video source such as a DVD player in any of the Audio/Video INputs. Doing so would confirm the tuner (and/or perhaps the logic) circuitry.

Most TV tuners would use a 33 volts reference voltage for the VCO to shift frequencies. The 33 is normally regulated by a dropping resistor and zener combo. Pls check this as they could be the issue. It may be to your advantage if you could post the brand and model of the PTV or at least the tuner block.

This is of course assuming that you are familiar with electronic circuitry and components, use of a DVM and safe practices involve when performing voltage checks on a live unit.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Posted on Oct 16, 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

Power light is on but no picture


you did not mentioned if you have raster or none, if your tv has raster but no picture your problem is in your I.F. section and your tuner, now if no raster, you can check your power supply, check your 5volts, 9volts, and 12volts check any alternatives that cause of no picture..

Sep 09, 2013 | Toshiba 40RV525U 40 in. LCD TV

1 Answer

Signal Problem


Hi,

When the sound is working and the picture is not it indicates the main power supplies are working but the picture supply is not. The picture supply that powers the projection tubes is a high voltage generator and is very expensive to repair. Not even most tv techs now how to troubleshoot them. So, I cannot recommend you repair it yourself unless you are a trained high voltage tech.

The cost of repair - my wild guess - would be around $300. However, the real cost can only be determined by someone who can make an accurate diagnosis - which will require a hands-on approach the problem.

If you have any other problem please ask me..
Goodluck,
Please don't forget to rate me as fixya..

Feb 09, 2008 | Televison & Video

1 Answer

Mitsubishi VS-55609: No video/audio - just static


You are on the right track. If you cannot see a picture on either antanna A or B then the tuner is suspect.
You may try hooking the cable straight into the TV if you are using a cable box, if not then you should be getting a picture when your other video devices are turned off.
The fact that you get a picture on video tells me that the AV circuits are fine.

Thanks
asnowman

Jul 25, 2010 | Mitsubishi WS-55809 55" Rear Projection...

3 Answers

I have a sony lcd kf-60xbr800 no picture in any input or raster no picture in component only menu. i reset the set and still no picture. all tuner voltages ok. help sergioaguirre0182@hotmail.com. thanks


(i) Make sure that the power cable from the TV is securely plugged into a functional wall outlet.
(ii) Then, check to see if the TV/Video setting is correct: when watching TV, it's set to TV, and when watching connected equipment, it's set to video 1,2,3, etc.
(iii) Check if the Parental control feature is activated. You can check it using the Parent menu.
(iv) If the LCD projection TV's power is ON, and LAMP indicator is flashing red then the lamp for the light source burns out. Replace the lamp with new Sony XL-2000U replacement lamp.
(v) If the LCD projection TV doesn't turn ON and a red light keeps flashing then the TV needs service.

Sep 08, 2009 | Televison & Video

1 Answer

IM A TV TECH. I HAVE A SONY LCD KP-60XBR800 I HAVE NO RASTER. POWER OK, MENU OK BUT NO RASTER ON TUNER, TUNER VOLTS OK,CAN YOU HELP ME PLEASE. THANKS my email sergioaguirre0182@hotmail.com


check the high voltage with the screen control turned up high where there is no raster. suspect problem within the video circuit where there is no high voltage or defective picture tube.some time when the screen is black and the screen control advanced,you can see if the tv has video or vertical or horizontal problems on the screen.service the high voltage circuit if there is no raster or high voltage is seen.no raster can be caused by the no heater or filament in the CRT.---- a defective picture tube can cause many problems, such as, poor brightness ,missing colors,intermittent picture,poor focus,a single-colored raster,arching in the gun assembly,retrace lines in the picture,negative picture,chassis shutdown,noheater or filament lit and no raster to name a few.an open filament or heater can cause no picture or no raster symptom.a defective CRT can have an extremely bright screen.loose particles of the cathode element can lodge between the grids and cause an intermittent black and white picture. simply tap the ends of the CRT gun assembly and notice if the picture begins to flash off and on.---- with a leaky picture tube after turn on the raster dims and get extremely bright.a dim picture with no green in the raster can result from a bad green assembly. a heater-to-cathode short can cause a raster to change colour or a result in no raster at all.replace the picture tube if there is severe arching in the neck of CRT. excessive brightness with retrace lines and a vertical collapse to a thin line can be caused by a bad coil on the neck board of the picture tube.rejuvenate the picture tube when there is very bright green screen. check for the resistance change on the resistors of the CRT neck board for an excessively bright picture with retrace lines.excessive dust inside the CRT spark gaps within the picture tube socket can cause the very bright raster and the chassis shutdown.a defective video amp,luminance buffer,or reference transistor can cause a bright picture with retrace lines. -------- for getting any required parts to replace you can get it from www.radioshack.com or from www.partstore.com or from www.shopjimmy.com --------- thanks.please do rate the solution.thank you for using fixya.keep updated.

Sep 06, 2009 | Televison & Video

1 Answer

Mitsubishi rear projection tv


you have a problem on the chassis. either the FMT, DM, or the terminal board have gone bad. the quickest most effective way to repair would be to repair the chassis. check out www.tv-techs.com

Dec 26, 2008 | Mitsubishi WD-52525 52" Rear Projection...

1 Answer

No picture


Good Day;
No video, has raster and sound, check I012, 3.3 Volt reg.
Good Luck, big IRISH.

Jul 26, 2008 | Hitachi 53FDX01B 53" Rear Projection...

1 Answer

No Picture on Mitsubishi v45605 rear projection tv


If it works the way you have it setup now, leave that way. Plug all your video sources to the denon if possible and leave it that way.
If the denon has the feature to change channels like a cable converter then you can use it or if you still have a VCR you can also use it as a tuner just to tune the cable channels and use the audio/video outputs from it to the TV or denon receiver.
The tuner might not even be available anymore and if it's, is expensive.
Good Luck.

May 24, 2008 | Mitsubishi VS-45605 50" Rear Projection...

1 Answer

Sound problem


 

  1. no picture &no sound raster ok.

 

  1. your problem is in tuner to vif section.
  2. check supply to TUNER & VIF section .
  3. check loose contact in above section.
  4. check components in VIF section.
  5. for ckt open the web site & download it fron there as given here.
  6. hope this will help.
  7. good luck.

http://www.eserviceinfo.com/index.php?what=search2

Oct 11, 2007 | Televison & Video

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

Related Topics:

66 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

71611 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

yadayada
yadayada

Level 3 Expert

67800 Answers

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

Answer questions

Manuals & User Guides

Loading...