Question about Toshiba 55H70 55" Rear Projection Television

1 Answer

Blue conv. not adjustable

Can not adjust blue conv. in the verticle direction

Posted by on

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.

  • Toshiba Master
  • 8,617 Answers

You will need to change both convergence ics they are STK392-110. You can get replacement ICs at the following link with free instalation instructions with pictures.
http://servicemanuals.vstore.ca/

Posted on Jul 25, 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

Blue Convergence chip will not adjust


In the Convergence Mode there are three main Functions (Categories). •Pressing "6" activates CONV MISC •Pressing "5" activates COARSE CONV •Pressing "4" activates FINE CONV
I don't know if this will help, sounds like you already know about the convergence tuning.

Jan 06, 2011 | Mitsubishi VS-50607 50" Rear Projection...

1 Answer

I have the opposite of a convergence problem. green pincushion cannot adjust so green is higher on left and right than center (bow tie). BUT red & blue will adjust and proprerly converge over the...


makenamicro, there is still a convergence yoke the green crt which means there is still a drive control circuit that controls your dynamic and static convergence. If you are working with out a service manual it is still possible that one of the convergence power amps is out, since you mentioned that you can adjust the red and blue to conform to the green pattern then try to adjust the green with out the R/B present if you ca not still adjust you green pincushion problem then suspect one of the power conv amps or a defective green conv yoke.(don't forget to check the small value resistors usually around 2 ohm and the pico fuses if the tv uses them. good luck and i hope i answered your questions, please let this web site know if yes by leaving some pos feedback. thanks!

Aug 22, 2009 | Sony Televison & Video

1 Answer

Sony kp53v75 TV with blue convergence off right by half inch


it is a convergence problem u may have 2 replace conv ic's and some resistors

May 11, 2009 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Conv problems with no pic has sound


Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projeciton sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some photos of convergence problems.

42d3683.jpg

7859b01.jpg

e87380c.jpg
Here is a quick test....

Using your original remote go-to the settings menu then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right. And you should be able to get the grid straight.

If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a fix

69189a5.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you are handy and can follow directions. You can get complete repair kits from TvRepairKits.com or click here. They have put together DIY repair kits that include the OEM parts and step by step photo instructions for each repair. If you are not handy or can't follow directions we would suggest calling a shop.

Apr 30, 2008 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

Apex gb55hd09w triple vision


Go in and find the conv ICs, they will be mounted on a
big heatsink and the wires going to the conv yokes will
most likely plug in somewhere closeby.
Conv ICs are the workhorse of the CRT RPTV, and it is
not unusual at all for them to need to be changed out
at some time in the life of a CRT RPTV.

Mr Bob

Comment by MrBob84, posted on Feb 04, 2008
PS -
The wires for the conv yokes at the CRT necks are the
thin ones. The thicker ones are for the hor and vert
sweeps, which must never be disconnected from their
circuitry during CRT operation.

If your beam loses sweep on any of the CRTs, it will
instantly score/gouge your phosphors on your CRT faces,
vaporizing the phosphors there and ruining the CRTs.
The beam is very powerful, but in normal operation
moves incredibly fast, not damaging anything. Any
slowdown of the movement of the very powerful beam that
draws the picture, acts like the searing vaporizing beam in Tom Cruise's War of the Worlds.

Feb 04, 2008 | Televison & Video

1 Answer

My projection tv is srewed


The green has to be adjusted through the service menu. You may try moving the yoke ever so slightly, but if you do mark the position its in now so you can put it back if it doesnt help the green. You can adjust the horizontal and verticle skew through the service menue. but you probaly have a weak capacitor or open resistor that has caused your green to skew as that is controlled electronically.

Jan 20, 2008 | Televison & Video

1 Answer

Dark screen and no green conv. RCA P52926 52in Rear Pro


I would first check for liquid on the board, if ok then tap on the green board see if theres a loose connection on the board
and then tap on the convergence area see if loose connection there.

Jan 20, 2008 | RCA P52926 52" Rear Projection Television

1 Answer

SONY GREEN CONV OUT BLUE/GREEN OK,SONY KP-65WV600


Red,blue and green each have an amplifier IC--Stk392-560 x 2

Replace both IC's for reliable repair.Also,check  fuses,location sometimes ps5003-5008. fuse value 3.15 amp. ......T.

Oct 22, 2007 | Sony KP-57WS500 57" Rear Projection...

Not finding what you are looking for?
Toshiba 55H70 55" Rear Projection Television Logo

Related Topics:

42 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toshiba Televison & Video Experts

The Knight
The Knight

Level 3 Expert

69570 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

matt martin
matt martin

Level 3 Expert

1198 Answers

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

Answer questions

Manuals & User Guides

Loading...