Question about Toshiba 61H71 61" Rear Projection Television

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PROBLEM W/ 61H70 CONVERGENCE

Hey guys I have a 61h70, the convergence is out of whack (3-d) effect across the bottom of the screen and the right top corner. From all I have read on your sight it sounds like convergence chips. Which do I need? and can I do it myself w/out paying someone a bundle. Are there resources out there to tell you how to do it? thanx in advance for your help. John

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You need to re-solder the circuit board that contains the STK convergence modules. They're on the center circuit board attached to an aluminum heat sink that's about 8" long and 6" tall, about dead center in the circuit board. You may be able to recreate the problem by gently moving the heat sink (which the modules are connected to). This gives the hour glass effect on the picture and the advanced convergence screen. This is an indication that the modules pins aren't solidly connected (meaning soldered) properly. Remove the circuit board and clean the old solder off & resolder the modules pins to the circuit board reconnected the board and then retest by again pushing on the heat sink. This is a caused by a minimum effort (a.k.a. minimum cost) solder job, probably done in some 3rd world sweat shop. The "factory" job was good enough for 3-4 years but the heat (and these modules do create a lot of heat) and stress created from repeated use eventually takes it's toll, weakens the pin connections and our problem occurs. take the appropriate cautions working around the high voltage of the set & use a non-conduting piece of wood to push the heat sink when we doing tests.
Best of luck, hope ya fix it.

Posted on Jan 30, 2008

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I have a toshiba 61h70. the tv had been shutting down after and few minutes and the red bulb was flashing also. I replaced the IC Chips and it resolved the flashing and shutting down issue. the green and...


You need to look with a meter at the resistors around the chips, they are usually gray in color with bands that denote value--a good guess is one or more were taken out by the chips--in these sets they will look fine---typical is 1.8 ohm (brown, gray, black bands).

At least one is open (bad--no reading across--like checking a fuse) and there will be several with identical color bands on them.

Let me know if I can help.

If this told you something you did not know, rate this solution as very helpful as I do this here for free.

SD TECH

Sep 16, 2010 | Toshiba 61H70 61" Rear Projection...

1 Answer

I own a Panasonic HDTV projection monitor PT-47WX42C I am having convergence/warping issues; There is a large green/red curve in the bottom rear of screen about 4 inches tall, and stretching over more...


Replace the convergence ICs they will be big black ICs and will have Part number on them example STK392-110
Mats Electronics has them for 9.95 each you will need 2 .
1-800-628-1118

Sep 10, 2010 | Panasonic PT-47WX42 47" Rear Projection...

1 Answer

The top 10 inches of my screen is breaking into separate bands of grn/mag/yellow that continue across the tv till half way and then it skews to the top right corner. It started doing this about 2 weeks...


Ur convergence is dead.U Know how to solders?Must replaced the 2 Convergence ICS and all it resistors.Tries Tv Repair World.com,Tvrepairkits.com for the convergence kit to repair it ur self.The shop will cost u $300 for parts and labors.

Jan 27, 2010 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

3-d effect it appears on the top and bottom of screen it slowly progressed inward


This convergence out ICs failure symptoms in TV and you need to replace two convergence out ICs in convergence out section / board in TV
if you are not familiar with TV repair then call qualified Tv tech to fix it.

Apr 15, 2009 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Pt-47wx49e convergence problem


I just replaced the 2 convergance chips, but it did not seem to fix the problem. I then tested all the resistors that feed the convergence chips anf there was a 2.2 ohm fusable blown. IT was R7050 on mine. That seemed to fix it so that I could adjust all the colors through the convergence 2 screen. There seems to be a slight bow near the bottom when you look at the c2 screen, but not noticable when you are watching a picture. Since I got this broken, I am not sure how perfect it should be.

If anyone can send me the service manual, I would appretiate it. Thanks.

Oct 10, 2008 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

Toshiba 61H70 Weird Convergence Issue?


They may have gotten some cheap convergence ICs, thats a real possibility. I would recommend switching the two origional STK392-110 with some STK392-150 they will run alot cooler and last alot longer. Just use a good coating of heat sink compound on the back of the ICs. I will post a link where you can get top quality Convergence ICs and they provide free instalation instructions with pictures so you can do the job yourself in under an hour and save quite a bit of money. Heres the link.
http://servicemanuals.vstore.ca/

May 22, 2008 | Toshiba 61H70 61" Rear Projection...

2 Answers

Convergence problem


you need 2-STK392-110 ic's located on board at q751 and q752 hooked to 2 heat sinks you can get them plus free online tec support and complete instructions with pictures at the link i gave you I have found this to be a great place for parts and tec support myself
http://servicemanuals.vstore.ca/

Apr 11, 2008 | Toshiba 61H70 61" Rear Projection...

1 Answer

Possible convergence problem


You could replace it yourself. I had it done recently and the local repair shop charge $400 to do it (including cost of the chip).

Jan 30, 2008 | Toshiba TP50H50 50" Rear Projection...

1 Answer

Hitachi Projection Color Lines


KIT10 $29.50
Repair Kit for Hitachi convergence Chassis DP-14G
KIT10 Includes 2 pcs STK392-150 , 1 each of the following 1W axial lead fusible resistors:


http://www.digitalhome.ca/forum/showpost.php?p=564268&postcount=220
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Nov 24, 2007 | Televison & Video

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