Question about Toshiba 61H70 61" Rear Projection Television

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Replaced Ic's and now tv power just blinks

I recently had a red convergence problem on my tv. So I did like many others and replaced the 2 ic's but I used the upgraded stk392-150. Now when I cut on the tv it just cliks and then the power starts blinking no picture no sound. Before I messed with the ic's everything worked fine besides the 3d picture effect. Has anyone else had a similar problem? Eventhough both the 110's and the 150's have similar specs could it be that the toshiba just does not read them or have they put a strain on some other componet? I bought them from acmesales which is a good supplier from what people say around the net.

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  • 232 Answers

Josh, Acme only sells the good stuff, I have replaced a thousand 110`s with 150`s with no problems, so I would say that you either put a plug back in the wrong place or one of the power supplies to the IC`s is missing, check your chemical fuses in the power supply section of the tv, you may have one that`s open, if the convergence circuit doesn`t operate the set will go into immediate shutdown, hope this helps, BMW Rider

Posted on Jan 04, 2008

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Posted on Jan 02, 2017

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The picture is clear but every thing has a blue shadow effect and all writing has the shadow about 2" under it.


Hi:
Your problem is the blue convergence IC has failed, there are two convergence IC's in this unit and I recommend you have both replaced because if one has failed the other is not far behind, better to do preventive measures now then later. One IC controls the Blue and the other controls the Red and Green convergence.

Jun 03, 2010 | Mitsubishi VS-45609 TV

1 Answer

On my mitsubishi ws65909 I have a 2-2 power light error code, what does this mean? any suggestions, I tried to power it up and the power light comes on and then goes off after 15-20 sec's


the famous code error 2- 2 is for fault in power supply or faulty power supply board. this has to be checked.
and error 2-3 is fault in convergence ic.so both the error codes are near to each other.so check out both options. i advise first replace the convergence ic on the board and check.the cost of each convergence stk ic is near to $15 .there are two such ic on the convergence board and both has to be replaced.then check out.if the problem is same go for power supply board replacement.

the ic which you have to remove and replace is stk 393-110 both the ic looks same anve same number .
you can get the required board and components at ----- www.partstore.com -------- or from ------ www.radioshack.com ----
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if you are not familiar with doing this you can get it done by local tv repair technician familiar with this model tv.
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This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya.

Nov 26, 2009 | Mitsubishi WS-65909 65" Rear Projection...

1 Answer

I have a panasonic model#PT-56WX33,when I power on tv NO PICTURE,NO SOUND,nothing.Only the red power light on tv panel lights up and blinks 5 times ovr-n-ovr.


Your symptoms sounds like a damaged convergence IC.

This is a common failure for this particular television. You should have a red blinking power light on the front of your set that will blink 5 times and this is your solution to your problem.

There are two and large IC’s that control the convergence in a big screen set. They are secured to a very large aluminum heat sink. They will have a part number stamped on them that will start with an STKXXX-XXX, like STK392-110, and they are located on the signal board (on the left as you look into the back of the set).

What happens in the Panasonic set is that the convergence IC’s will short and cause the power supply to shut down from the overload of current. Along with the convergence IC’s there will also be some associated components that will need to be replaced as well. There are some resistors that are part of the convergence circuit that will be open and need to be replaced. Most likely these will appear charred in the center. If you have an Ohm Meter or a DVM, check all the resistors that are close to the IC’s and you should be looking for either ones that have opened or have changed values.
There are also two resistors on the front of the board located in the middle that are fusible link resistors, these should be checked for opens and replaced if they are found so.

I would suggest that you contact a service center in your area for a complete diagnosis and repair, as this type of repair can get a little tricky. But if you want to repair the set yourself, just remember to be careful. The capacitors and CRT’s can hold a charge and may shock you.


If one of the convergence IC’s are found to be bad, I would replace them both, if one has gone bad the other may go soon. I usually order my parts from Andrews Electronics in California, they will have the OEM components that you will need.
Their site is http://www.andrewselectronics.com/welcome.aspx
And their phone number is a 24-Hour Order Desk: (800) 274-4666
I recommend the phone order so you can talk to the person about the different types of IC’s that are available.

I would also advise that the convergence IC’s be OEM or better, just because they are cheap does not mean that they are a good deal. I have seen the cheap IC’s fail after a short time, even though they look exactly like the OEM IC’s. I think that the bottom line is that you will get what you pay for when it comes to the parts.

You can also try http://www.tvrepairkits.com/ , I have not tried them yet, but they do carry OEM or better parts.

I hope this information allows you to resolve this issue.

Sep 30, 2009 | Panasonic PT-56WX53 53" Rear Projection...

1 Answer

Hitachi 53UDX10B Power Light Flashing after convergence IC replacement


C603 is a polyestor capacitor 0.068UF-FEB 50V part number 0880047R S901 is the power relay ALKS329 the part number for the relay is FJ00142 . I recomend checking the pins on the ICs to make sure they are not bridged. If you need more assistance let me know. Vance Baldwin should have the parts if not you may have to order through hitachi

Jun 06, 2008 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Tv won't come on


Mine is Toshiba 55 TZ, have it since 98', shutdown and red light blinking problem, search the ned and found out, generally a Convergence IC (stk392-110) problem. bought 2 for $15 at suburban-elect.com (ebay). replaced following direction from http://www.casiasfamily.com/repairlog/tp50h15.html

Open back cover, 9 screws and wirings (pls mark), removed(soldered) a electronic board infront of convergence ic. removed IC (stk392-110) (screwed and soldered).

Replaced everything and voila...! it is now working again..
no more shutsdown and red blinking light. Saves mo $400 for a repariman. of course just be careful with static and stuff.

Feb 29, 2008 | Toshiba 50H81 50" Rear Projection...

1 Answer

5 year old tv


Mine is Toshiba 55 TZ, have it since 98', shutdown and red light blinking problem, search the net and found out, generally a Convergence IC (stk392-110) problem. bought 2 for $15 at suburban-elect.com (ebay). replaced following direction from http://www.casiasfamily.com/repairlog/tp50h15.html

Open back cover, 9 screws and wirings (pls mark), removed(soldered) a electronic board infront of convergence ic. removed IC (stk392-110) (screwed and soldered).

Replaced everything and voila...! it is now working again..
no more shutsdown and red blinking light. Saves mo $400 for a repariman. of course just be careful with static and stuff.

I don't know how to solder, so I ask friend to do it for me. But I did the rest. Just to give you an idea that it can be done even if you don't know much about electronics. This in no way a recommendation but just stating my experience. Follow at own risk.

Feb 16, 2008 | Toshiba 50H81 50" Rear Projection...

1 Answer

Toshiba 50h81


it happens to my toshiba.. once in a while and gradually shutsdown every minute during the last 2 mos..

Mine is Toshiba 55 TZ, have it since 98', shutdown and red light blinking problem, search the net and found out, generally a Convergence IC (stk392-110) problem. bought 2 for $15 at suburban-elect.com (ebay). replaced following direction from http://www.casiasfamily.com/repairlog/tp50h15.html

Open back cover, 9 screws and wirings (pls mark), removed(soldered) a electronic board infront of convergence ic. removed IC (stk392-110) (screwed and soldered).

Replaced everything and voila...! it is now working again..
no more shutsdown and red blinking light. Saves mo $400 for a repariman. of course just be careful with static and stuff.

I don't know how to solder, so I ask friend to do it for me. But I did the rest. Just to give you an idea that it can be done even if you don't know much about electronics. This in no way a recommendation but just stating my experience. Follow at own risk.

Feb 05, 2008 | Toshiba 50H81 50" Rear Projection...

1 Answer

No picture red light blinks 7 times


in this model is commom that the convergence ic.s go bad and stop the set from turn on check for a couple of fuses that are in convergence board if is blow replace convergence ic

Feb 01, 2008 | Sony KP-53HS10 TV

1 Answer

Will not power on but red blinker is on.


Your set likely has a bad convergence ouput ic that has caused a fuse to blow. The convergence output ic type number is STK392-110. These can be replaced with STK392-120 or STK394-160. It is good practice to replace both ic's because the one that is not defectie now will likely fail soon. The fuse may be a small glass fuse or a pico fuse. One is for about +28V and the other is for about -28V. Also to the left of the heat sinks for the convergence output ic'S you will find (2)small wires that have black insulation on them. It is very possible that one or the other of these have bad solder connnections.

I’m happy to help further over the phone at https://www.6ya.com/expert/dewayne_4a10eab6caecdb92

Jul 22, 2007 | Toshiba TN43V71 43" Rear Projection...

3 Answers

Toshiba 50H81 Re Blinking Light...wont work


best advice is go get a manual book on how to fix tv

May 07, 2007 | Toshiba 50H81 50" Rear Projection...

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Toshiba 61h70 Picture Problems Hello, I have a Toshiba 61h70 TheaterView HD Projection TV, and was recently having some slight convergence issues (red was out of alignment and could not be adjusted). So I researched and found that the IC?s (STK392-110) needed to be replaced. I initially purchased them on eBay, to later find out that they were cheap clones and did not work (they made the convergence worse, actually). I then purchased 100% Sanyo IC?s from a reputable dealer and replaced the IC?s again. Once finished, I then entered the service menu and adjusted the convergence alignment. Once the alignment was perfect, I hooked back up the TV antenna, the DVD player (composite), and the S-video from my computer. The convergence is fine, but now I?m having a totally different issue ? the video is ?scrolling?. The menus will show up fine, however any incoming video inputs will show up okay for a split-second, but will then flash and the picture starts to scroll in different directions. This happens with any of the video inputs. I checked and changed all the service menu items to factory defaults, however this had no effect. I have pasted a link below to a short video that illustrates the issue that I?m having. Please note that the video starts off with a black screen, showing the ?input? menu, and then I selected the ?TV input? and changed the channels. You will see the picture fine for a moment when the channel is first changed, but then the picture will start to scroll. Any ideas of what would be causing this? And how can I correct the issue? I?m not a TV repair expert, so I?m not even sure where to start. Any help would be greatly appreciated. http://s75.photobucket.com/albums/i303/hybrydmike/?action=view₪t=TV_Troubles.flv

Feb 27, 2017 | Toshiba 61H70 61" Rear Projection...

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