Hi, Thanks for the suggestion on the website for replacement ic chips for my gb55hd09w television. But now after install of the new chips when i turn on the television and try to converge i don't get the red crosshairs, blue is fine, and you see three large red streaks or smears starting 1/3 in and then trailing to the right. after you exit the convergence the picture now longer has that old 3d movie look but the picture has a significant red wash. Any suggestions you have for me would be greatly appreciated.
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Re: problems after new ic chip install
Did you check for open resistors in the convergence circuits? Often that is what happens when the old ICs wear out it will cause a couple resistors to burn open, and they show no outward sign of being bad. Also double check the IC pins connections for solder bridges thats another common problem, I always use a magnifying glass to double check my solder when ever I do convergence or any IC work where the pins are close. But with the streaks youre describing I would think maybe resistors.
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First: double check all your soldering on the chips, and all the plugs you may have removed.
Second: Unsolder all pins on both chips in the set and see if set comes on. It is rare but from time to time you may install a new IC that is bad; if you discover you shorted pins to another pin when you soldered that may be telling you the new chip is now shorted.
Usually when you have one kind of problem and then another after you replace parts something you did went wrong or the new part is also bad.
This is not the most easy set to get at those chips (I have done a lot of them in peoples homes) and you should also always examine all the 1.8 ohm resistors around them, do not just look but test each carefully.
Hi, When buttons on a cell phone does not work , it is usually a problem from the Board of the cell phone. An IC problem...
IC are small chips that has different functions on the cell phone. Each IC chips on the cell phone has it's function. The IC controlling the function of the keypads npt working is damaged and needs to be replaced.with another IC chips.
You can get IC chips from your mobile company mini office or you can simply go to the nearest Expert repair store around you area to replace the damaged IC chip that controls the key pad not working.
Sometimes, it might just be dirt or water spill that is making it not to function. You can open the cell phone and clean the keypad area,
Hi, There are two big black ICs that will be replaced. Number would be written as STK392-110 and available with Part Store. Click above link to see an image of that IC for better idea and price info. Thanks.
Replacing them requires a lot of soldering and a knowledge of circuit boards.
Is the Tv worth saving? is it bright and clear? was it good (when it worked?) if
the answer to all of these is yes, then you have a few choices. If any
of these are not true, then you should just get a new tv.
Your choices are: If
you are good at soldering, then you can attempt to replace the IC's
yourself. (with all of the parts handy, it should take 1 hour)
you aren't good at soldering, then you can have a friend do it for you,
or you can have a mechanic fix it. (tell them that its the convergence
IC's that went bad. (pay no more than $200 for the job).
go bad on almost all projection tvs eventually. They overheat and burn
out, causing the tv to shut down when you turn it on.
The I2C message that you get means the Inter IC communication bus on the system board has gone bad. Replacing the IC would not solve the problem.Philips patented this technology to reduce the number of ICs on the systemboard.There would be a physical I2C chip on the motherboard.
You can read about the technology on the post by philips http://www.nxp.com/acrobat_download/applicationnotes/AN10216_1.pdf
I would suggest update the firmware on the board, or try replacing the I2c interface controller chip.
Okay R939 resistors are 3.3 OHM 2 watt metal film. and R950 are 270 OHM 2 watt metal film. The 3.3 ohm are the most likely. One end has to be unsolderd fro circuit and lifted out to check them if they dont read 3.3 ohm they need to be replaced as they are 5% tolerant resistors. I Cant find the rating for R392 can you tell me the color bands on them and are they the same size as the other two type resistors? The 3.3 are the ones I would check if they read 3.3 they are good but if they dont measure or measure high replace them, and let me know the details on R392 color bands and size.
You need to replace both convergence ICs part number STK392-110 this requires basic soldering not very difficult. If you order the new ICs at the link I am posting they provide free instalation instructions with pictures and free tech support so you can do the repair yourself and save about 400.00 heres the link. http://servicemanuals.vstore.ca/
Yes that chassis should use STK392-110 you need to replace both heres a link where you can get new replacement ICs and they provide free instalation instructions with pictures. http://servicemanuals.vstore.ca/