Question about Akai PT4298HD Rear Projection Television

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Convergence chip Is it possible that I have stk394-250 ic's in my akai pt4299hd I can only find thoughs #'s on the chips at the back(2 of them) I believe that is my problem cause the colors are splitting

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Should be STK392-040............I use Panasonic brand replacements for durability.....part # C5AA00000107.....
Don't use generic IC's....they will not hold up................T.

Posted on Apr 22, 2008

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Tv was working and the reds wouldnt line up good did the convergence and they were acceptable not perfect though. now the tv went black. is it worth fixing?


Maybe so. Convergence is generally controlled by two large ic's " chips" from the symptoms you describe the convergence ic or stk's as they are commonly called are possible blown. When these short generally that will lead to a shutdown. There could be additional problems as always. Cost are difficult to deternine depending on where you get your repair. If the chips are the problem they generally average about 25 to 50 apeice for the chips. Our shop generally charged about 150 to 200 for such a repair. My advice is it is cost affective to repair this set. .Note: when these ic's blown they can damage other components that might add to cost of repair.

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2 Answers

I have 55" akai rear


You are going to have to look for open PICO fuses along with bad bias resistors close to the ic's. You should have close to +27 and -27 volts of B+ on the chips to start with. That will ensure the fuses are good. Then trouble shoot the convergence circuit from there.

Nov 26, 2010 | Akai PT5598HD 55" Rear Projection...

1 Answer

Tv wont turn on


You need 2 STK392-110 Convergence ICs and possibly 6 2.2 ohm 2watt resistors. You can get the convergence repair kit for your model from www.tvrepairworld.com the kit contains the ICs, resistors and the CD with instructions. The PT47WX42 convergence kit is the correct one for your model.

May 10, 2010 | Panasonic PT-53WX42 53" Rear Projection...

2 Answers

I have a Mitsubishi WS-65711 that is six years


Go by number on your ICs If they are STK392-570 then use STK392-570 only! Call Mats for parts 10.95 each 1-800-628-1118 They are Big Black ICs mounted on Big Aluimmim heat sink will have STK on them!

Dec 27, 2009 | Mitsubishi WS-65711 65" Rear Projection...

1 Answer

Akai/Samsung PT4299HD Convergence Problem


Ck 3 low ohm resistors 2.7 ohms they will be on same board as ICs.

Feb 13, 2009 | Akai PT4298HD Rear Projection Television

1 Answer

Akai PT5250A - I cannot converge correctly.


There is 2 or 3 resistors ck them near STK ICS 2.7 ohms replace them most of the time it is 2 of them bad.

Jan 13, 2009 | Akai PT5250A Television

1 Answer

51MP392H/17 Blue convergence wont move not IC chip


You could have some opened resistors low ohms that are bad go back and ck them around convergence ics.

Nov 20, 2008 | Akai PT4298HD Rear Projection Television

1 Answer

Akai pt4299hd


replace your STKs big black Ics STK394-250 there is 2 of them thses are your convergence ics.Also ck resistors and pico fuses.

Jul 22, 2008 | Akai PT4799HD Rear Projection Television

1 Answer

Convergence


youre convergence ICs need to be replaced there are two of them STK392-040 you can get new replacement ICs and free instructions with pictures at the following link.
http://servicemanuals.vstore.ca/

Jun 05, 2008 | Akai PT4298HD Rear Projection Television

1 Answer

Akai PT 4299HD picture shift


Sounds like you got it ! Note for the future....if you change
convergence amp IC's...be sure to use top quality name brand
only....no generics ! I use Panasonic with no re-calls.......T.

Feb 18, 2008 | Akai PT4298HD Rear Projection Television

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