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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Blue gun adjustment does not move blue line in menu convergence function. Any way to adjust or fix?


No.Fix.Tv have dead parts on the tv convergence board.Tv colors lines R,G,B mis alignment,can't move any colors lines.The tv convergence board the 2 STK convergence ICS and some or all it resistors are dead on the tv convergence board.These parts,must be replaced on the tv convergence board to solved the tv picture convergence problems.The shop,will cost u like $300-350 for parts and labors.

Oct 28, 2010 | Toshiba 61H70 61" Rear Projection...

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61H70 Common Problems According To Local Repair Shop


No Startup = Check Q404 (2SC5570) and pico fuse F470 (2A)

Dead = Check Q801 (strz4369, 23135015) or replace QA02

Intermittent Reset = Add cotton tape and capacitor (0.47uf) across pin 54 of QA01 and GND (CA61 GND side)

Dead Relay Clicks = Replace zener D878 (9.1V)

HOT Fails Often = Replace C403 (22uf/100V)

Picture Fades Comes Back Blurry = Replace Q510 and Q221

When environment temperature rises above 95 grade F, television goes out of convergence and vertical slowly rises from bottom of screen = Connect capacitor (10pF/50V) between R4013 (Q421 collector) and R4012 (Q421 base). Add insulation tape underneath capacitor as necessary.

Intermittently no blue colour. Distorted lines in picture = Replace Q751 (STK392110)

Rolling picture. No convergence. Red foldover = Replace Q751 (STK392110) and R7726 (1.2R)

No picture. Audio and OSD OK = Check R243 and R244 (22K/0.16W)

Q510 replacement = 2 IC types have been alternately used as Q510.a) TA1316Nb) TA1316AN...The 2 types are not interchangable. When replacement of Q510 is necessary, the original type must be used. Do not use part number listed in the service manual. Use part numbers listed. Q510, type IC: TA1316N - Use P/N: 23000358 Q510, Type IC: TA1316An - Use P/N: 23000584

Dead & Power LED flashes = Check fuse F860 (4A) for O/C, Q801 (STR-Z4369), D862 (NTE552). Also check zener diodes D873 (27V), D875 (9.1V), D877 (27V) and D878 (9.1V).

Hope this helps...Unless you know exactly what is going wrong, sending the chassis to http://www.ptscorp.com would be my advice.

on Jan 22, 2008 | Toshiba 61H70 61" Rear Projection...

1 Answer

Colors out of focus- like a really bad 3-d movie


the convergence issue can be usually repaired by replaceing both of the STK392-110 Convergence amps and the six 1.2 ohm 2 watt resistors. You can get replacement parts at the following link with instructions on how to replace the ICs.
http://servicemanuals.vstore.ca/

May 21, 2009 | Toshiba 61H70 61" Rear Projection...

1 Answer

Tohsiba 61HD70 Rear Projection


Yes, its a convergence problem and you may be able to fix this yourself if you have a soldering station and a few basic tools. Its possible that all that is necessary is to re-solder the pin connections on the convergence output ICs on the underside of the cicuit board. There may also be a poor solder connection on a jumper wire connection near the ICs. Its near the plastic frame. If this does not resolve the issue, you will need to replace the ICs. Remember to unplug the TV before doing any service.

Feb 15, 2009 | Toshiba 61H70 61" 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...

1 Answer

Convergence when hooked to HDTV


Your set needs to be realigned in each format, then settings saved

May 06, 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

Jittering screen


Chassis will need to be pulled by a skilled technician.Some specific area hand-soldering is needed and the STK convergence IC's need changing w/OEM or better quality parts.You have a good set worthy of repair.

Sep 26, 2007 | Toshiba 61H70 61" Rear Projection...

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