My HC-P4752W had the same IC symptoms as many others here so I followed the advice and installed 2 new STK392-040 (because I read that they were better than the 010's). The problem was not fixed because I couldn't move the "blue color" in the service menu. According to the service manual, before you leave the menu, you need to select "reset" to save. I did that and now the TV will power up for 1 second, then shut off... Then it tries to re-start again only to shut off 1 second later. I figured it was a 3.9 ohm resistor problem so I checked all 12. (10 were fine, 2 were replaced). I figured THIS would do the trick, but still no luck. It still powers up for only a second, and then shuts down. Here’s the tricky part.... I can access the “mute-182” service menu without a problem and the input plays fine in the background (which means it doesn’t sound like a “power” problem to me because otherwise, it wouldn’t stay on, right?) AND when I go to the “mute-183” menu to move colors on the grid, all colors can move (suggesting that I no longer have a convergence problem). Does anyone have an idea of what is wrong? Thanks!My HC-P4752W had the same IC symptoms as many others here so I followed the advice and installed 2 new STK392-040 (because I read that they were better than the 010's). The problem was not fixed because I couldn't move the "blue color" in the service menu. According to the service manual, before you leave the menu, you need to select "reset" to save. I did that and now the TV will power up for 1 second, then shut off... Then it tries to re-start again only to shut off 1 second later. I figured it was a 3.9 ohm resistor problem so I checked all 12. (10 were fine, 2 were replaced). I figured THIS would do the trick, but still no luck. It still powers up for only a second, and then shuts down. Here’s the tricky part.... I can access the “mute-182” service menu without a problem and the input plays fine in the background (which means it doesn’t sound like a “power” problem to me because otherwise, it wouldn’t stay on, right?) AND when I go to the “mute-183” menu to move colors on the grid, all colors can move (suggesting that I no longer have a convergence problem). Does anyone have an idea of what is wrong? Thanks!
Sounds like you soldered two of the convergence pins together by accident. If its shorted the TV will shut down.
SOURCE: STK392-010
The value you are looking for is 3.9 ohm. Just ohm them out and replace the ones that are not right on the money= very important for longevity. Don't forget to clean and apply new heat sink compound to the heat sinks.
SOURCE: Convergence problem Samsung HC-P4752W
check the 3.9 ohm resistors as well as some of them may be open also
SOURCE: short red line in center bottom of screen on a
if the ic have been replaced, it may be necessary to refocus the rprojection tubes, this is done by moving the rings near the bottom of the tube, determine which tube and by focusing the lens .. be careful when doing so high voltage can kill you!!
http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull
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Sorry.. I pasted this question twice. lol
I just double checked my work and the soldering looks fine. Any other ideas?
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