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LED TV backlight tester

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john-nafp

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some time ago i needed a portable power supply that could lit led arrays so i can test various tv sets brought to my repair shop,so i decided to built one.this little device works perfect for 2-3 years now and all the repairs im making is done with the help of it.
here is the schematic and various photos and below a video presentation on my youtube channel
Schematic_3-190v-led-tv-tester.png
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https://www.youtube.com/channel/UCsQNMn53cmuXmbLP1VFXAow?view_as=subscriber
 
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