Question about Akai PT5598HD 55" Rear Projection HDTV-Ready Television

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I have a pt5598hdix projection television. the screen showed red and green lines from the top and bottom. the screen showed u at top coming down same with bottom going up. then it came in on both sides. there was a small pop sound in back and the screen shut off and sound came back on. it is a 55" screen. is it cheaper to fix or buy a new t.v.? and could i fix it my self? thank you, robert hopkins

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Hi,

Ok, you probably have a failing convergence stage. This is very very common in older projection TVs like yours - maybe the #1 problem.

The TV has three color tubes in the lower half of the cabinet that project an image off the main mirror and onto the back of the screen. The convergence board processes the signals to the tubes and adjusts the light beams so that the red, blue and green images all line up. When the board fails, the light beams don't line up and you get the '3D' image with the separated colors and bowing near the edges.

The board has two main components called convergence amplifiers (some call them STKs or convergence ICs). They can fail. It is also common for some pico fuses or fusible resistors on the board to pop. If all three colors are off, then the STKs are probably bad. If only one color is off, then it could just be a pico fuse or other small component in the signal path.

You have three choices.

1. Some people have fixed the board themselves but it is not a job for a beginner. The parts are only about $70 but you need to know what you are doing. I can point you in the right direction but you need to have a good understanding of soldering and troubleshooting basic electronic components. You would need a DMM and soldering tools. Here is what is involved - it will give you an idea: http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

You can buy the kit for your TV here: www.tvrepairkits.com

2. You can try and find a rebuilt board. This would probably cost around $300 and you would need to pull the old one out and put the new one in.

3. You can have it professionally repaired. This would probably cost around $400-$550

I'm sorry it isn't the best news.

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Jan 02, 2011

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