Question about Toshiba 50HX70 50" Rear Projection Television

1 Answer

Green arch at bottom of screen toshiba 50hx70

Toshiba 50hx70 it is about 8 years old. on the bottom part of the screen the green is arched up above the red and blue and gives a double letter effect... thanks for any help

Posted by on

  • papawmax Dec 29, 2008

    Yes I am going to do what blueextc3221 suggested I can replace intergraded Circuits & replace some resistors. It would help if I new where they were located at, or maybe a schematic of the circuit board they are on. Thanks I will let you know how this turns out. MAX

  • papawmax Jan 09, 2009

    I fixed it and it works like a new one. I replaced the 2, STK392-110T Convergence amplifiers that I bought on line for $14 each plus shipping. It was not bad taking the board out (30 min) with extreme caution. I was about 45 min. taking the old chips out and replacing them. Each chip had 16 legs that had to be unsoldered and the new ones soldered back in. I don’t thing I would recommend someone doing this if they went fairly good at soldering and had a little experience in soldering. It is basically a no brainier if you can solder. I have been a Truck driver all my life and now retired and I did. But I would not have tired it if it wasn’t for this web site. If i can answer a question you might have I would be glad to help. Thanks Fixya.com



    CASEYMAX

×

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.

  • Master
  • 15,935 Answers

It sounds like a convergence gone bad.

This requires either a competent shop or an experienced technical person who can solder and has experience in replacing Integrated Circuits.

The shop will charge around $300 to $400 to do the job.

If you can do it yourself or have a technician/engineer friend the cost of parts will be around $60 - plus lots of labor.

The convergence system will require both STKs to be replaced. They are 16 pin Integrated Circuits and must be unsoldered and the new one soldered in. Often there are a couple of resistors burned out that need replacing also.

You can often find the STK part number easily by going to www.partstore.com and chase down the part. When you find it on partstore.com you will learn their price is about $40 each. But, you can locate this same part from other suppliers by googling the STK number and find them for $6.00 and up. But, I do not recommend the cheap ones as they don't last long. The $20 ones are probably okey.

The STK for your model is the STK392-110T.

Hope this gets you started.

Posted on Dec 29, 2008

  • blueextc3221
    blueextc3221 Dec 29, 2008

    http://store.payloadz.com/str-asp-i.1697...



    This $15 downloadable service manual should get you what you want.

    A Factory Authorized Toshiba Tech will not give out these manuals because he is contractually barred from doing so, or he will lose his service contract.



  • blueextc3221
    blueextc3221 Dec 31, 2008

    The email address you gave to was invalid. So here's my reply to your question posed to the FiXya Staff:

    No, you need the exact part # I referenced. The numbers after indicate a different part number. Basically the same, but different characteristics that its not important to get into.
    Glad I could be of assistance.
    Ryan

    By the way, on the 55H70, there is an easy way to remove the STK392-110's. You don't need to remove the PCB, connectors, cable or anything like that. The power PCB and the control PCB are screwed onto a plastic frame. The plastic frame then is fastened to the TV wood by 3 black wood screws (it might be less or more on different model). You remove these 3 screws then loosen the cables from the cable ties and holder then slowly pull the entire board out. Then you can stand the entire board in a vertical position where you can desolder and solder the ICs. Taking the board out to this position takes 5 minutes. Soldering the ICs back take a little more care since you need to do it vertically and the solder tends to drop down a bit.

×

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

Instruction for setup of American Camper tent 8x11


Finally figured it out through trial and error. This right here is the only correct explanation given anywhere on the net.

First, make sure you have all of your poles. There will be 4 straight green ones, 4 straight blue, 4 straight burgundy with plastic feet, 4 curved yellow, 2 small orange arches, a straight pink and a straight white.

Before you start putting the poles together, stake the tent down at every loop point around the base of the tent. There should be 10 of them. Make sure they're fairly tight and the floor of the tent is taught and flat but not so tight that you tear the tent at the seam. Stake 1 corner first. Then put the second stake through the second loop in order and using a firm pressure, pull away from the first stake, along the line of the tent base, make taught and push the second stake into the ground. Repeat until finished.

The first pole assembly uses in this order, going out from the yellow arch, which is in the center. From one side of that arch, add one green, then a curved yellow, then another green and a burgundy at the bottom. Do the same from the other side of the center arch piece.

This arch outlines the door and goes through the 3 loops on the front of the tent, around the door, so the poles hold the tent up. the loops at the bottom are not for the poles. Every loop around the bottom are where the stakes go to hold it down. For now point the feet towards the back of the tent wherever they will stand on their own. You can fine tune it and firm it up once you get the second arch in place.

All green ones should now be used up.

For the second arch, do the same thing but use the blue instead of the green. So from the one side of the yellow arch, 1 blue, 1 curved yellow, one blue and one burgundy. Same order from the other side of the arch.

Now all the poles should be used up except for the straight pink one and the straight white one. These two go together to make a straight pole that goes through the metal loops attached to the yellow arch pieces and locks the two arch assemblies apart at the top.

Now this takes some maneuvering and some word smithery to describe but what you want to do is make sure the feet of the front arch assembly, are pointed towards the back of the tent and stop at the side. The back arch feet will point towards the front of the tent. They both stop about 6 inches BEFORE the center tie down loop on the SIDES of the tent, on either side of the center loop. The front arch will actually lean forward, with the feet pointed behind it and wedged into the ground, right up against the tent at the bottom, move it around until you have a nice firm feel to it. Same with the back arch but this one will lean away from the back of the tent and the feet pointed towards the front. Once you get the back arch into place, it will really firm up and won't budge.

Another way to describe it would be that the two arch assemblies feet will point towards each other at the side of the tent, about 6 inches before they reach the center loop on either side.

Hope this helped. =)
Posted on Jul 04, 2015

Aug 28, 2012 | MSR Kamp Rite Double Tent Cot

1 Answer

I NEED INSTRUCTIONS TO AN OLD AMERICAN CAMPER TENT IF ANYBODY CAN HELP ME ON MY SEARCH TO FIND SOME INSTRUCTION


Finally figured it out through trial and error. This right here is the only correct explanation given anywhere on the net.

First, make sure you have all of your poles. There will be 4 straight green ones, 4 straight blue, 4 straight burgundy with plastic feet, 4 curved yellow, 2 small orange arches, a straight pink and a straight white.

Before you start putting the poles together, stake the tent down at every loop point around the base of the tent. There should be 10 of them. Make sure they're fairly tight and the floor of the tent is taught and flat but not so tight that you tear the tent at the seam. Stake 1 corner first. Then put the second stake through the second loop in order and using a firm pressure, pull away from the first stake, along the line of the tent base, make taught and push the second stake into the ground. Repeat until finished.

The first pole assembly uses in this order, going out from the yellow arch, which is in the center. From one side of that arch, add one green, then a curved yellow, then another green and a burgundy at the bottom. Do the same from the other side of the center arch piece.

This arch outlines the door and goes through the 3 loops on the front of the tent, around the door, so the poles hold the tent up. the loops at the bottom are not for the poles. Every loop around the bottom are where the stakes go to hold it down. For now point the feet towards the back of the tent wherever they will stand on their own. You can fine tune it and firm it up once you get the second arch in place.

All green ones should now be used up.

For the second arch, do the same thing but use the blue instead of the green. So from the one side of the yellow arch, 1 blue, 1 curved yellow, one blue and one burgundy. Same order from the other side of the arch.

Now all the poles should be used up except for the straight pink one and the straight white one. These two go together to make a straight pole that goes through the metal loops attached to the yellow arch pieces and locks the two arch assemblies apart at the top.

Now this takes some maneuvering and some word smithery to describe but what you want to do is make sure the feet of the front arch assembly, are pointed towards the back of the tent and stop at the side. The back arch feet will point towards the front of the tent. They both stop about 6 inches BEFORE the center tie down loop on the SIDES of the tent, on either side of the center loop. The front arch will actually lean forward, with the feet pointed behind it and wedged into the ground, right up against the tent at the bottom, move it around until you have a nice firm feel to it. Same with the back arch but this one will lean away from the back of the tent and the feet pointed towards the front. Once you get the back arch into place, it will really firm up and won't budge.

Another way to describe it would be that the two arch assemblies feet will point towards each other at the side of the tent, about 6 inches before they reach the center loop on either side.

Hope this helped. =)
Posted on Jul 04, 2015

Jul 12, 2010 | MSR Family Tents

1 Answer

Phillips 60in 60pp93/5217 red and green arch at bottom of screen


you need the convergence repair kit which contains both convergence ics and all resistors along with step by step instructions. heres a link to the site that has the repair kit.
http://servicemanuals.vstore.ca/product_info.php/pName/phillips-dptv-305-dptv345-convergence-repair-kit/cName/convergence-repair-kits

Jan 21, 2009 | Philips 60PP9202 60" Rear Projection...

2 Answers

Green flickering and not lined up with red and blue


well I am not tom but your tv is having a convergence problem only a technician may be able to replace the bad ic inside the set

Aug 23, 2008 | Toshiba TZ50V51 50" Rear Projection...

1 Answer

Dec 2001 Blue reflection and arch on bottom 1/4 of picture


http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Jan 23, 2008 | Toshiba 43H71 43" Rear Projection...

1 Answer

Toshiba 50H82 blue arcing?


color shadows on numbers or letters indicate a possible convergence problem.. might be a crt deflection problem.

Dec 18, 2007 | Toshiba 50H82 50" Rear Projection...

1 Answer

Blurry picture and arched at bottom


We have a Proscan 50" Projection TV. A T.V. repairman told us it was the HV (Horizontal Vertical) Splitter causing this problem and tried to find the part for us. The part for our TV was too hard to find though and we ended up not having ours fixed. Our T.V. is 8 years old though, and Proscan is discontinued. Maybe you'll have better luck finding an H.V. Splitter for your TV. Of course, you'd need a professional to install it for you. Good luck.

Sep 20, 2007 | RCA P60921 60" Rear Projection Television

1 Answer

Toshiba 43H70 HD Projection TV


this is a convergence failure, there are hundreds of posts about it on this website you should be able to find everything you need

May 23, 2007 | Toshiba 43H70 43" Rear Projection...

1 Answer

Arched picture at bottom seperating the green and red


Your tv has a convergance failure. the convergance ic's need to be replaced. Upgraded part # STK392-150 or STK392-160. Both ic's should be replaced to prevent future failure of other colors.

May 20, 2007 | Toshiba 43H70 43" Rear Projection...

1 Answer

Red and Green Vertical Arches


CHECK ANY MAGNETIC MATERIALS ON THE CORNER OF THE TV.IT HAPPENS DUE TO MAGNETIC MATERIALS ONLY. SUPPOSE IF IT IS THERE KEEP AWAY FROM THE TV. AND THEN GO TO THE MENU OPTIONS AND SET AUTO DEGAUSSER ON.

Apr 23, 2007 | Philips 32PT8302 32" TV

Not finding what you are looking for?
Toshiba 50HX70 50" Rear Projection Television Logo

Related Topics:

16 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toshiba Televison & Video Experts

The Knight
The Knight

Level 3 Expert

71672 Answers

Jaime Hernandez

Level 3 Expert

2294 Answers

Henry  Thomas
Henry Thomas

Level 3 Expert

1074 Answers

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

Answer questions

Manuals & User Guides

Loading...