Question about Toshiba 43H70 43" Rear Projection Television
I recently replaced both IC's on my Toshia 43H70 projection TV and one bad resistor. The picture is much better but I cannot line up the blue cross on #3 and #9 on the convergence screen. I read about using a dot & crosshatch generator. What is it and how does it work?
Hey, I'm no repair man but I recently had this same problem. I can't remember the exact name of the thing you need to adjust, but I can tell you where it is (or atleast give you a starting point to google).
If you remove the front panel of your TV (You probably have to remove the speaker panels first, then remove the center piece) you should see the bottom of the lamps. It will look kinda like an upside 2-liter with an extended bottle cap.
Using the 2-liter bottle analogy, at the base (where the "funnel" meets the "neck") there are 2 rings that are right next to eachother. If you play with these rings, you can line up your convergence.
I wish I remembered the name of these rings, but if you do enough googling, you should be able to find more detailed intstructions.
Hope this helps!
Posted on Feb 06, 2009
This is a piece of equipment that injects a cross pattern signal or a dot signal (such as the little game connect the dots) and you align the colors exactly on the dots or the cross boxes such as you have already experienced with your cross hatches. i would think more along the lines of another resistor, connection, or something real close to where you already are, sounds like you almost got it just need to look one more time.
good luck stereo tech
Posted on Feb 03, 2008
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Posted on Jan 02, 2017
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