Question about Norcent Technologies TV2001 20 in. LCD Television
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Posted on Jan 02, 2017
SOURCE: when I plug the power
Right now the standby 5vdc is working but it may have gone into safety shutdown due to failed power supply or shorted circuits in the backlight inverter board. You need to troubleshoot it to narrow down the causes first before buying the wrong parts.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:
Please see my basic troubleshooting guide here:
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com just make sure to use caps with low ESR, 105c rating such as PANASONIC FM or FC series.
Please post back what you find.
Posted on Dec 02, 2010
The continuous flashing indicates that the power source is in protected mode: another part inside the tv has failed, it draws an excessive amount of current and that has been detected by the safety system of the power source who has shut it down to protect it and the rest of the tv.
Since the status light goes to orange for a few moments before going red it means that the problem is outside the power source. The most probable cause is indeed with the mainboard; if it would have been one of the Sustain boards the failure would have been much more brutal and instantaneous (no orange on the status light) .
To certify that you will have to test the mainboard with an oscilloscope to find out if the processor is operational. If you don't have one just swap it.
Posted on Feb 12, 2011
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