Question about Televison & Video
Ok, I have repaired hundreds of these sets--this one uses two STK-392-570 convergence chips---I have seen many of them where in the first 30 minutes or so the chips are intermittent, I call it Flakey----you need to replace both chips---very common on this set.
The chips can be purchased on Ebay for less than 14 dollars plus shipping (for a pair)----the real question is are you able to do this repair if I provide you with detailed instructions for this model?
If you are able to do this you can save a lot of money--most shops are going to get 300-400 for this kind of repair----sooner or later if you keep using the set this way---it will go dead---there are fuses that protect the chips--when one goes the set will instantly shut off.
There is a very simple reason this happens--these two chips are about 2 1/2 inches wide and 1 1/2 inches tall with 18 pins each---the back of each chip is metal and a white grease is applied to each chip before it is mounted to a large metal heat sink--after some years the grease dries out and one of the chips goes because it cannot move the heat fast enough to stay cool.
Let me know what level of soldering skill you have--I have start to finish instructions I am willing to post here for you----if you remove the front speaker grill on the set and the inspection plate behind it you will see the two chips on the center circuit board on a large metal heat sink---
If you are not able to do this repair--I have lots of free advice about how to get it fixed---I have fixed hundreds of these sets---once the chips are replaced and the set adjusted---it will not have this problem again for 5-8 years----very good sets and much more dependable than LCD or Plasma sets.
IF YOU HAVE ANY QUESTIONS OR NEED HELP-do not hesitate to ask me here---I am here to help people.
Regards, SD TECH
Posted on Oct 07, 2009
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Posted on Jan 02, 2017
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