20 Most Recent Akai PT5598HD 55" Rear Projection HDTV-Ready Television - Page 8 Questions & Answers

sounds like the place you took it to get servicer turned up the screen control when you had no picture problem that was a no vertical causeing a vertical line. but the service center let it run too long causing the line to burn in the tube. very bad for a repair center to do this. cant believe the got you for 600. thats well overboard. now you got a blue convergance problem because its erroring out durrent the blue reading in the test. what you need is to take off the screen turn on the tv. look in each tube for that line. now you can tell what tube needs replaced. then check convergance ic's they are big black ic's that stand up and mounted on a heat sync for cracked solder. might want to go ahead and solder them anyways in case you cant see or dont know what your lookin at. also check all the resisters in that area for burns. if that does not fix your problem, try replacing the ic's using mcm electronics. they are on the web. and the part number from the front of the ics.

Akai PT5598HD... | Answered on Aug 05, 2008

usally when this occurs your looking at high voltage problem. flyback, horizontal, crt issues, do you hear any high voltage static or cracling when you turn it on or off

Akai PT5598HD... | Answered on Jul 25, 2008

The Solution posted by "Guest" on March 18 2008 worked exactly as he said it would. The part was delayed a week or so due to back order, but it arrived yesterday and, once installed, fixed the problem for under $100. THANKS "GUEST"!!!

Akai PT5598HD... | Answered on Jul 23, 2008

You will need to replace the convergance IC's if the colors are no longer lined up and they won't line up using the tv's controls. Also, if the crt lenses have a lot of dust on them removing that will help the sharpness and brightness of the picture. Don't use canned air. Get a crt lens cloth.

Akai PT5598HD... | Answered on Jul 07, 2008

when thes tvs get around 4 to 5 years old the convergence go's out on them there are 2 stb's or someting like that it may be stc's i can't remember what they call them it's been so long sence mine did 1 has probbly went bad i chould control the red but not the blue and sometimes when this happens it will also blow green fuses as well in my books they should put cooling fans in these tvs to help cool them there is to much heat inside the tv thats why they only last a few years before having that problem i have 3 of them and all three of them did the same thing you can check the remote eye on the front of your tv sometimes when there is a problem the green remote eye will flash acode but you will have to have the service manual to find out what what the code means

Akai PT5598HD... | Answered on Jul 01, 2008

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.

Akai PT5598HD... | Answered on Jun 02, 2008

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

Akai PT5598HD... | Answered on May 31, 2008

This is usually an indication of either bad connections at the convergence ICs or defective ICs. If you can solder, resolder the connections first. If that fails to resolve the problem replace the ICs. These will be large black ICs attached to a heatsink and marked STKxxx.


Akai PT5598HD... | Answered on May 19, 2008

if you got to the following link and search by the model number you will find what your looking for.


The part number for the service manual is SM-PT5598HD

As the set is showing a blinking red timer light. you can check the following link out.

Akai PT5598HD... | Answered on May 14, 2008

· http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
· http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Akai PT5598HD... | Answered on May 13, 2008

Just a thaught, I could be wrong, maybe a problem with the power button on the remote ? It might shut the TV off, and when you do keep pressing the remote button, the red light on the TV will keep flashing like that also. Ive seen this prob on a few other blogs, so seems to be pretty common. I know I like to keep the remote pointed at the TV all the time, maybe try pointing it away for a while, just to see.

Akai PT5598HD... | Answered on May 13, 2008

You need to replace both convergence ICs numbers STK392-040 a repair shop will want about 600 to do the repair. Or you can get replacement ICs at the following link and they provide free step by step instructions with pictures so you can do the job yourself which takes about 45 minutes and requires just basic soldering skills. heres the link.

Akai PT5598HD... | Answered on May 11, 2008

go to the following link and click the contact link on the lower left side and tell them your model they will email you with the correct convergence ICs that you need for your model. they also provide free installation instructions with pictures and free tech support when you order the replacement ICs.

Akai PT5598HD... | Answered on May 11, 2008

The red tube is bad . There are three crt tubes in set red green and blue. your red tube is bad. cost if you where to bring it in to tv shop would be around 450.00 and tubes
are sometime not in stock anymore..

i hope this helps doctor video

Akai PT5598HD... | Answered on May 01, 2008

The red line in the crt is the sreen voltage is to high or bad tube.
A simple fix is if you take off the front panel there will be a black box be careful it is high voltage make sure you are a pro.
there will be six controls look for the one marked screen and is for red tube adjust very slightly counter clockwise.until red
line gos away. If that does not fix it its the red tube.

I hope this helps doctor video

Akai PT5598HD... | Answered on May 01, 2008

Most of the time when you have ghosting problems it is a bad connection on you cable connectors make sure they are tight or maybe they are bad. Interferance causes that or even capacitor in tv or even a bad cable box . I gave you a list of all things that cause it but i think its connections.

I hope this helps DOCTOR VIDEO

Akai PT5598HD... | Answered on May 01, 2008

try tapping lightly on the tub that matches your color problem.
do you see it come and go? if so then you have bad tubes.
you can try to rejuvenate them but is not recomended.

Akai PT5598HD... | Answered on Apr 30, 2008

akai is made by samsung if they have the same part number they should be interchangable

Akai PT5598HD... | Answered on Apr 23, 2008

The top of my screen is pink and the color kind of bows down. The images are kind of distorted. Thanks for any help.

Akai PT5598HD... | Answered on Apr 16, 2008

I purchased mine about 5 months ago. Ive been researching and playing around with the remote. This will help you on the way. With the set off, press "Mute", 1, 8, 2 then turn the tv on. This will bring up the main settings, dont change any values on any page, unless you write the origonal values down first, because the total reset doesnt return everything to a "factory" preset. Scroll down to reset and press the enter key. I havent come across any owners or service manuals, and support is slim to none. I wrote a review for the same model on a wal-mart site I believe, and it explains adjustments in more detail. If you want to try to figure out the buttons for yourself, while the tv is on, press "Mute 1, 8, 3" this is another set of adjustments for finer detail. If you change an adjustment here and your not sure, just press the exit button. To save your adjustments in the convergence mode, press and hold the enter button, it should flash a few times and center itself on the screen. If you make a mistake in this mode, the total reset I mentioned first should get you back on track. If you find anything out or have a question, feel free to write me at [email protected] This is a nice TV, wonder why they stopped making them.

Akai PT5598HD... | Answered on Apr 12, 2008

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