Question about Televison & Video
1.You may be looking a fly back issue/
2. the fly-back transformer may be arching and needs replacement.
3. A tech will be able to determine this with test where the issue is on the main board.
I hope this helps.
Posted on Apr 24, 2010
The clicks that you hear is an internal device called protection circuit that is shutting down the TV, and forcing the PSU to +5V low only to keep the TV in standby.
That is called protect mode.
If the TV stays in stand-by, with the LED light on, but does not respond to remote, or to the buttons on the chassis, then that means that the TV has gone in protect (safe) mode because an internal fault had been detected.
In that case the TV is usually faulty.
Common faults on this model that can cause PSU clicking concern PSU board, main controller board, and ballast board.
If the TV problem is affected by wacking, then the problem is usually a broken contact caused by a bad soldering joint.
The parts must be tested before replacement. Less common faults could cause the same problem.
When the TV reacts positively to wacking, testing is done reading continuity on all contacts to find cold solder joints (broken contacts on printed circuit board soldering).
Try first disconnecting all connected devices, and leaving the TV disconnected from power for about 30 minutes. To drain power completely.
You can follow the basic troubleshooting on this article: Why my TV does not start up and remains in...
If that does not work, contact Toshiba, ringing the support number listed on the owners manual to get the TV repaired by a licensed technician.
Parts for Your Toshiba and Service manual may be available here.
Posted on Apr 25, 2010
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Posted on Jan 02, 2017
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