Question about Akai PT5598HD 55" Rear Projection HDTV-Ready Television
I replaced the convergence board and the picture is still bowed on the top and bottom. The colors Red and Green are off giving a ghost like image. Do not know where to go from here. Also the picture is the same with or without the convergence board plugged in.
Best Solution posted on May 30, 2008
Rating: 90%, 6 votes
Today may be your lucky day. Approach this procedure with extreme caution and take your time. Sometimes when you replace that board you have to do a full digital convergence alignment. With tv off, push mute,1,8,3,power. Tv will come on in service mode. Certain buttons can now screw up the set in a major way, do not guess. press 7 to adj. red, 8 for green, or 9 for blue. Then look for the highlighted "x" intersection. Use directional buttons to adj. while careful to watch screen. Vol+ and - or ch+ and - make moves, mute moves cursor. If alignments move up, down, left, and right continue until all intersections are aligned. Turn power off to start over. When done press add/del on remote to save settings. That should fixya.
Comment by rmstulsa, posted on May 31, 2008 I tried to do this to no luck. Nothing would move. Here is a recap of what the problem is:
Picture bowed on the top and bottom
Colors not lined up(green and red)
Replaced convergence board
attempted manual adjustment of colors
Picture is off with or without CV board plugged in.
Anything else I should Try?
If the picture is still bowed, the power supply fuses are open.
Check the power supply on the red connector for + and - 20 volts.
The fuses are on the main board,are on the deflection module in the middle, tward the front of the TV. They should look like green (or brown) resistors. An ohmmeter check will show which ones are bad.
They should be 3.5 amps. Replace with 4 ohm GMA fuses with pigtails if you can't find picofuses. I also had a set that would fry the 1 ohm resistor on the 20 v supply. This was near the fuses.
I replaced the whole module to fix that.
I hope this helps. Lee, www.crazycomputers.com
Posted on May 31, 2008
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