Question about Toshiba 50HX81 50" Rear Projection Television
Noticed that the colors were off tried to manually adjust them with no luck then tried to auto focused and noticed the bow in the green
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Posted on Jan 02, 2017
SOURCE: convergence problem
Replace the Convergence amplifiers. Mine did the same. It was like watching a 3D movie without the glasses. It is not hard to do for someone who knows their way around a circuit board repair. Otherwise call a reputable service shop.
Posted on Jul 10, 2008
SOURCE: toshiba 50H12 convergence
your convergence IC's are bad, it is 2 3 inch chips that have to be soldered onto a board in the back, after you unsolder the old ones,they cost about 40 $ for both
Posted on Jan 08, 2009
See my solution <http://www.fixya.com/support/t2795690-convergence_off_blue_line_only_vertical>.
You need to get to the service menu--it's been 4 years so go to AVSforum.com to turn off the different guns and get the better pattern.
At your risk: To get into Service mode:
1. Turn your TV on. 2. For X81 or earlier series: Press MUTE on your remote and release. 2. For H80/H81/HX81 series: Press MUTE on your remote and release two times ("Mute" on-screen) 3. Press down MUTE on your remote again and hold. While holding, press the MENU button on your TV set's front panel. 4. Release both buttons. 5. An "S" should appear on your screen. Press MENU again on your TV. 6. Now you're in service mode. Channel Up/Dn - Scrolls through Parameters and Volume Up/Dn - Changes Parameter Value
To get into convergence mode:
Get into Service mode, then Hit '7' to bring up the convergence grid. Buttons 100, 0, and ENT control which gun you want to turn off (if you want to align the red to the green without seeing the blue gun and other variations). 2=up, 8=down, 4=left, 6=right, 3=change gun to converge, 5=converge that point. To exit convergence mode you press 7 once and your screen should look like it's imploding then return to normal and then you press 7 to get back into regular service mode.
I have more info found on the board. -Ken
Posted on Aug 18, 2009
Ok, we go to solution of your problem===The pico fuses are green and on the main power board--have you removed the back and looked inside--most of these sets have the two STK-392-110 on the main board to the right-they are usually on the left edge of this board on two very large metal heat sinks--chips are about 2 1/2 inch wide X 1 1/2 inch tall--is this how your set looks inside? they will have the number printed on the black face of each chip in white--The fluke meter will allow you to check all the grey protect resistors--most are 1.8 ohm and the pico fuses will be near the edge of the board to the left----All I expect from you for help is a vote here--if you remove the back do you see the chips?
Posted on Sep 19, 2009
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The convergence ICs and the six 1.8 ohm 1watt resistors need to be replaced. You can get the convergence repair kit for your model at www.tvrepairworld.com which has the Two Convergence ICs and the six resistors plus the CD with instructions on how to do the repair.
Posted on Dec 02, 2009
Testimonial: "Thanks! I'll give it a try!"
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