Question about Akai PTH5498 54" Rear Projection HDTV-Ready Television

1 Answer

Just replaced the two IC's on the convergence board. I still have the same double image as before. What else could it be? Thank you!

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  • Nabil Karabash Dec 10, 2009

    Thank you for your help!

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  • Akai Master
  • 5,138 Answers

Did you replace 2 resistors 2.7 ohms in same circuit as STKs ? and after that you will have to Go to Convergence on your Menu and adjust.

Posted on Dec 10, 2009

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3 Answers

Colored lines at top and bottom when tv comes on and seeing double vision in different colors at all times


If your tv is not a DLP the problem is in the convergence, try to adjust it using your original remote control go to the setting menu then to the convergence section. Adjust the red and blue convergence. you should move the red and the blue in up, down and left, right if this color does not move far enough your convergence IC is already defective. Replacing this convergence IC will solve the problem. In locating this convergence IC you should remove the back cover of your unit but be sure to unplug it before doing this. This convergence IC is attached to a large aluminum plate, it is the heat sink, and it has a marking of stk- ### followed by numbers. You can try to pull it out using a soldering iron and soldering pump but be careful you may damage the board and cause much problem to your unit. Or you can contact a technician to do it for you and save you from stress good day and best regards.

Aug 28, 2011 | RCA Televison & Video

2 Answers

The picture has double images and looks kind of like it is 3D.


The tv have a problems known as a convergence problems,it dead.The tv convergence board have dead 2 STK convergence ICS and some or all of it resistors too.The tv convergnece board,must have these parts changes on the tv convergence board to solved the tv picture convergence problems.The shop,will cost u like $300-350 for parts and labors.

Dec 31, 2010 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

Television has double images like 3D, and bottom half of screen has a concaved image.


Hi,
Please replace convergence ICs in tv, there are two big black ICs that has number STK392-110 mounted with big aluminum heat sink, replacement these ICs will solve your tv problem. Also check big resistor nearby these convergence ICs and replace if found burn mark or color faded.
On circuit board, IC location number is IC7001 and IC7002
Let me know if you have additional question.
Thanks.

Dec 25, 2010 | Panasonic PT-47WX49 47" Rear Projection...

3 Answers

Double photo


Replace both of your STK ICs STK392-110s use 150s Mats has Them 1-800-628-1118

Jun 02, 2010 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

I have a panasonic PT-47wxc43 projection tv. I have green and purple halos coming up from the bottom. The screen has purple and green double images which are worse from the bottom up.


Hi,
This problem is due to convergence output ICs failure and both chips will be replaced to fix the issue.
There are two big black ICs installed with aluminum heat sink on deflection board, these are convergence output ICs and will be replaced to correct the problem, it is common problem of rear projection tv.
Below image of deflection shows ICs (marked in red) that are need to be replaced.
IC number is STK392-110 and available with Part Store for $32 each.
Click above link to see an image of IC.
If you are handy with electronics stuff repair and can replace parts in tv circuit board then can replace these parts yourself or ask local tech to help you.
Hope these info will help you.
Let me know if you have additional question.
Thanks.


May 25, 2010 | Panasonic PT-47WXC43 47" Rear Projection...

1 Answer

Akai 42in rear projection TV convergence problem


its the problem of ic on the main board..ic needs to be replaced.not much expensive.

Dec 24, 2008 | Akai PT4298HD Rear Projection Television

2 Answers

Convergence problem


replace the convergance ic chip on the board below the crt of whtever color is not working

Aug 29, 2008 | Sony Grand WEGA KDP-65WS550 65" Rear...

2 Answers

Double image


Your set uses the 195 series chassis, which has separate components for each of the 6 convergence channels and a separate power supply for the convergence circuits. If all 3 colors have drastically shifted, especially around the edges, then chances are your convergence power supply has stopped working. This is usually caused by the failure of the STK730-010 switching IC. If one of the colors has dramatically shifted by itself then something has stopped working on the convergence board. Sometimes I see CRT coolant leaking onto the convergence board as the cause. In either case this is something that should be repaired and realigned by someone experienced with RCA projection TV convergence circuits.

Jun 05, 2008 | RCA P52937 52" Rear Projection Television

3 Answers

Double image, blue and yellow images


convergence ic are going or have loose connection in the convergence amp ic area.
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Jan 15, 2008 | Hitachi 43FDX01B TV

4 Answers

DOUBLE IMAGES


How do we adjust convergence? I went to the service menu and all I see is alot of settings none of which help me out.

Can anyone explain this in further detail?

TIA

Aug 26, 2007 | Sony KP-53HS30 53" Rear Projection...

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