Rear projection TV STK 392-120 LG convergence problem

 have LG rear projection TV RT-39NZ43RB. I had convergence problem six months back & I replaced one OF STK 392-120 IC. which fixed the problem. That time blue colour was out.

Now seems problem is back with green and light purple colour out.

Should I replace both STK ICs this time or the one which I didn't replace last time ?

To avoid same problem occuring again should I also go for STK 392-150 or may by STK 392-180 ?

Also I already have STK IC 392-120 bought from BIC  www.bluestar-online.com, is this right one to replace ?

MBHEKISENI
MBHEKISENI's picture
ABOUT UNREADABLE RESISTORS

ABOUT UNREADABLE RESISTORS,ESTIMATE THE RESISTANCE OF THE RESISTOR BY SCRACHING SOFTLY THE OUTER COVER THEN,1 TEST THE RESISTOR FROM THE LEFT PIN TO THE FAULTY POINT THEN, FROM THE RIGHT PIN TO THE FOULTY POINT.eg: LEFT=cccccccccXcccccc=RIGHT. IF THE LEFT SIDE MAKES 14 OHMS AND THE RIGHT SIDE MAKES 4 OHMS THAT RESISTOR IS 18 OHMS.

Wasanthk
Wasanthk's picture
Rear projection tv problem
Hi, I'm having a LG Gallery rear projection TV. After using some times, now it takes long time to appear pictures. What should I do to rectify this problem?  
Wasanthk
Wasanthk's picture
Hi Dayawansha,
Hi Dayawansha, Could you pl help me to tolve this problem? My rear projection TV takes long time to ahow pictures. Should I replace the bulb now or this occurs as a result of some other problem? Thanks
mgeonetta
mgeonetta's picture
Have a Sony kp-61v85
Have a Sony kp-61v85 convergence is bad repair manual calls for  stk 392-150 ic  Have there been any upgrades to this part?

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