Question about Televison & Video
I was going to write on this yesterday, then I left because the problem is common on Samsungs, but there are more different problems causing shutdown.
When you call Samsung they usually answer that the problem is likely Digital Board (about $400) or DMD Board (other expensive part), and give you the highest possible quote, so to cover the repair problem whatever the problem.
If problem happens after lamp replacement, then it is often either a defective lamp cage safety switch, or a faulty ballast board.
There is a huge number of posts on the problem, all pointing at different faults. If for example convergence or PSU board started failing one year after lamp has been replaced, that would be the problem.
Concluding, unless there are additional symptoms, the only way to say what the problem is is by disassemblying and testing the set at component level.
Let me know model number of the set if tou need more detailed info.
Also let me know if there are additional symptoms (eg. BLINKING CODE, colors not matching or distorted picture before shutdown, popping noise, audio but no picture, etc.)
Posted on Oct 09, 2010
It's neither of them - it's a problem in the power source:the filtering capacitors have aged and they have lost part of their isolating characteristic so a much bigger current is shorted to the ground thru them.
Because of that the power source is overstressed and when - due to the content of the program you are watching, like in case of a very bright scene, or very loud one - more current is needed , the trigger level for the protection system is reached = the tv just shuts down.
You need to replace every singe electrolytic capacitor,
Posted on Oct 08, 2010
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Posted on Jan 02, 2017
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