Question about Toshiba 50HX70 50" Rear Projection Television

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Toshiba projection tv

I had problems with the color convergent. i replaced the ICs and now i plugded it in and now all i get is a blinking red light near the power button.
•no picture
•no sound
•NO NOTHING!
What did i do wrong?

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  • 8,617 Answers

Check for solder bridging between the IC pins. also make sure the wire connections are back in the proper locations

Posted on Feb 14, 2008

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My panasonic rear projection tv does not turn on the red light blinks 3 times


Hi,
3 times red light blinking indicates that tv got problem of convergence output ICs failure and need to replace two big black ICs (convergence output) to solve this problem.
IC replacement requires soldering work and good knowledge of electronics stuff repair, please cal local tv repairman if you do not have prior experience of such work to avoid any damage.
Hope this will help.
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Tv have a problems known as a convergence problems,it dead.Tv have colors lines R,G,B mis alignments,have colors shadows or have 3D pictures look alike?The tv convergence board have dead 2 STK convergence ICS and some or all of it resistors too.These parts must be replaced on the tv convergence board to fix it.To solved the tv picture convergence problems.The shop,will cost u like $300-350 for parts and labors.

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Blue will not focus causing "shadows". Magic focus will not solve the problem.


This tv have a problems call convergence,it dead.The tv convergence board the 2 STK convergence ICS and some or all it resistors are dead.These parts must be replaced to solved convergence problems.The shop will cost u $300-350 for parts and labors.

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Unable to align cross hairs on the blue lense. Dose the lense need to be replaced?


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 projection 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


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fcabb43.pngCONVERGENCE SOLUTION

You can see some more examples and find a fix using this link on Fixya - CLICK HERE

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1 Answer

Blinking red Light


Hi, thank you for visit fix ya.
Common problems on this tv ( cause no power):
1.- Loose connection between connectors and cool solder around fly back. ( re solder all).
2.- IC vertical output and capacitor in same section ( 100uf, 220uf,3300 uf and 2.2uf ), replace all.
3.- STKs ICs convergence , need be replace ( check any resistor around STKs, for burn or brown color).
----- Try to do step by step; you will repair your tv.
I will be here for any future question.
Thank you

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1 Answer

Toshiba TP43H60 Convergence Problem


This may sound odd but try moving the remote further from the set. I have seen similar issue with my 42H81.

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1 Answer

No picture & the red power light just blinks


If it shuts off and then the power light starts blinking red or never turns on but the power light blinks red continuously that is usually indicative of the convergence ICs (STK 392-110). You never want to replace the ICs without also replacing the resistors that are associated with them. There are usually 6 resistors, one for each of the colors and there corresponding direction, IE Red horizontal, red vertical, blue horizontal, ect. In the case of this model tv all of the resistors are 2.2 Ohm and 2watts. You will find them right where the STK 392-110 ICs are. Right in front of them. They are blue and have this color code on them: Red, red, gold, gold. These are represented by stripes on the resistors. You can get the parts from www.bdent.com They carry the ICs and the resistors. If you do not feel comfortable completing this repair I could do it for you if you send me the board. My email address is: missionelectronics@sbcglobal.net The cost is 375.00 and that includes all parts.
Good Luck.

Mar 08, 2009 | Toshiba TP43H95 43" Rear Projection...

1 Answer

Toshiba TP43H95 projection tv has power but no picture


If it shuts off and then the power light starts blinking red or it never comes on but the power light just blinks red continuously that is usually indicative of the convergence ICs (STK 392-110). You never want to replace the ICs without also replacing the resistors that are associated with them. There are usually 6 resistors, one for each of the colors and there corresponding direction, IE Red horizontal, red vertical, blue horizontal, ect. In the case of this model tv all of the resistors are 2.2 Ohm and 2watts. You will find them right where the STK 392-110 ICs are. Right in front of them. They are blue and have this color code on them. Red, red, gold, gold. These are represented by stripes on the resistors. You can get the parts from www.bdent.com They carry the ICs and the resistors. If you do not feel comfortable completing this repair I could do it for you if you send me the board. My email address is: missionelectronics@sbcglobal.net The cost is 375.00 and that includes parts.
Good Luck.

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1 Answer

Toshiba 50H71 projection tv


the convergence ICs have shorted and thats whats shutting down the set. Its an easy repair you have to replace both the Convergence ICs they are STK392-110 ICs you can get replacements at the following link and they provide free instalation instructions with pictures and also free tech support. Heres the link.
http://servicemanuals.vstore.ca/

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1 Answer

55HX70


needs convergence ics period

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