Question about Televison & Video

4 Answers

When the tv is turned the picture is concave on the four sides. This tends to rectify itself after approx 25 minutes The tv is a 7 year old rear proj Mitsubishi ws 65908 /102894 HD diamond1080 When picture is correct it is excellent

Posted by on

  • 3 more comments 
  • hargreaves3 Jul 16, 2008

    The advise could be excellent but i would like a second opinion

  • hargreaves3 Jul 16, 2008

    Is this problem worth fixing based on the age of the set?

  • hargreaves3 Jul 16, 2008

    Many thanks for your input

    I will take all these issues into consideration

    Have a great day

    Ray H

  • hargreaves3 Jul 17, 2008

    Many thanks

    Is this something that could brical knowledgee done by a non ddiy person with limit electrical knowledge?

  • hargreaves3 Jul 18, 2008

    Many thanks for your valued advice
    Have a great weekend
    Ray H

×

4 Answers

  • 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.

  • Master
  • 19,396 Answers

It is a convergence problem. One of the two convergence fuses had blown.
Check the last pages of your user manual to find out how to get service in your area, there should be a toll free phone number

Posted on Jul 19, 2008

  • 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.

  • Master
  • 4,234 Answers

The bowing in the vertical plane indicates a problem within the convergence circuit. The bowing from the sides is caused by a fault in the pincushion circuit. Both can be caused by poor solder connections, but hte pincushion problem is usually a bad capacitor. These sets are known for having problems with surface mounted capacitors that can cause a number os symptoms. The "fix" usually involves changing 6 surface mounted capacitors along with the repair of a number of poor solder connections. With a little practice, this can be a DIY project. Let us know and further detailed instructions can be provided.

Dan

Posted on Jul 16, 2008

  • ABRsvcs Jul 18, 2008

    If you have no experience with soldering, I would not suggest you start with surface mounted devices. You are best to have this unit serviced.



    Dan

×

  • 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.

  • Master
  • 2,296 Answers

It seems like your TV has cold solder around the convergence IC or the low value resistors that are connected to the ICs.
If you know how to solder and know how to work around high voltage areas, this might be a DIY project.
There are not any adjustments that you can do using the remote control or the front panel buttons.

Posted on Jul 16, 2008

  • Jaime Hernandez Jul 16, 2008

    If the repair cost you about 1/3 of the price of the TV still worth to fix it since the quality of the picture still good when the TV works.

  • Jaime Hernandez Jul 17, 2008

    Knowing how to work where there is electricity is vital. Spotting a crack solder or dry solder joint could a bit more tricky since you might need the aid of a magnifier glass 2X or 4X as well know how to use a soldering iron.

    My suggestion if you are DIY is to check for brown discoloration(burns cause by overheating components) spots on the circuit board specially around STK392-XXX ICs and resistors.

    Let me know if you need further assistance.

×

  • 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.

    Guru:

    An expert who has written 7 tips or uploaded 3 video tips

  • Master
  • 1,894 Answers

You have got a convergence problem

please check it

Posted on Jul 16, 2008

  • 3 more comments 
  • dewan nafees ahmed Jul 16, 2008

    this is a signal of the convergence ICs getting dead slowly.

    and hence replacing them as soon as possible will be a better option for you.

    thank you


  • dewan nafees ahmed Jul 16, 2008

    This set is old enough that it may have the convergence system on a
    separate daughter plug in board. So, you face the decision of replacing
    the whole board or just the IC STKs on the board. You can identify the
    parts by looking for the silk screened markings on the board, usually.


    thank you

    dont forget to accept the solution if you re OK with it.


  • dewan nafees ahmed Jul 16, 2008

    Try unplugging the 3 convergence yoke plugs and then trying to power on
    the set. The convergence plugs are located on the board on the left
    side of the tv looking in from the back and they are 3 identical plugs
    right next to each other they have a R B and G next to the plugs one
    letter for each plug just remember which plug goes to which location
    when you plug them back in.

    credits : Slinteriors


    WARNING: this solutions is highly risky since you will be working around high voltages. and hence be careful.






    thank you once again

    have a great day

  • dewan nafees ahmed Jul 16, 2008

    what i would recommend is.

    dont decide this based on only age. have a consideration on the over all performance of the unit.

    has it given any problems before and often? and has it cost heavy for repairs anytime before? if yes then i would say a strict NO for this repair and go for a new unit.

    for units near 10years of age this repair costs 400$ or more.

    we can suggest you the facts.

    its up to you to decide weather to make the repair or not.

    thank you


  • dewan nafees ahmed Jul 16, 2008

    please dont forget to accept the solution if you are OK with it.

    dont leave the solution unrated.

    thank you once again.


×

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 was given a P52960 ,2002 rca 52 projection tv and the sides of the piture are concaved in.Can this be fixed easy enough,i am good with electronics/wireing..iI was told by the old owner that the solu


concave or bloated pictures on crt projection tv's are corrected with what's called a 'pincushion' adjustment. Look for it in the menu under video controls.

Dec 22, 2012 | RCA P52960 52" Rear Projection Television

1 Answer

My AIWA TV 19-inch color is 9 years old. It is


HI,

WHEN WORDS AND PICTURES ARE BLUR,DIFFICULT TO SEE,,

ITS PROBLEM WITH LOT (LIGHT OMITTING TRANSISTOR) WHICH INSIDE TV ...

NOT OTHER PROBLEM ..JUST GO TO ECONOMIC TV TECHNICIAN.

TNKS

RABBANEES

Nov 12, 2009 | Aiwa F2000 20" TV

2 Answers

50v710 turns off by itself then on


Have you check the power supply,that's what it seems to me.

Jun 29, 2009 | Hitachi 50V710 50" Rear Projection...

1 Answer

TV on/off


How long is your TV on before it turns off? Check the fans and make sure they are all working. The TV may be shutting off due to overheating if a fan quit working.

If you think the lamp is still good maybe try replacing the lamp ballast.

Jan 16, 2009 | Samsung HLP4663W 46" Rear Projection HDTV

4 Answers

Picture Problem


I have the same situation. Called my repairman, who knew exactly that it needed a "570 kit" . It will be repaired this week. Cost $360

Sep 26, 2008 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

Durabrand Television


cold sorters that means needs to sorter it again

Nov 13, 2007 | Durabrand DWT2405 24" TV

1 Answer

RZ56Z83


The picture on my projection TV has intermittent concave right and left sides. Can you tell me what's wrong with it? your problem is due to pincushion ckt as it is intermittent so that there might loose contact or print break in pincushion ckt it can be rectified easily by skilled tech. there is no parts failure. good luck

Sep 23, 2007 | Zenith Z56Z83R/D TV

1 Answer

Shutting off and on...


the problem may be due to dry soldering in the power supply stage if it was with the lamp there would be red or green light showing the presence of the power to the tv after making it own some of the components get hot and it will make the the soldering point conectionless and after some time the heat sink get cooled and the soldering point gets connected and u will see the picture again it is a simple problem if u have a soldering iron u make it hot and re solder all the components in the first part of the circuit board and the problem if rectified

Jul 03, 2007 | LG RU52SZ30 52" Television

3 Answers

Concave Images with pink and green colors


you can get it your tv fix the problem is in the IF amp and video circuit.a convergence will also be neeeded.the tv is old but can give you some more life call a tech they will be your tv doc.

Apr 03, 2007 | Sony KP-57HW40 57" Rear Projection...

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

Related Topics:

58 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

72620 Answers

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

Level 3 Expert

6694 Answers

yadayada
yadayada

Level 3 Expert

70346 Answers

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

Answer questions

Manuals & User Guides

Loading...