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Can you help determine what the problem may be with a 32" LG TV that has no picture ? We have a model 32LN530B-UA. s/n 308MXVW8E535 SVC code 32LN530B-UA.BUSYLWM

It has no picture. It has audio. It has no back lights - I took the back cover off. I used the flashlight with the lights off and was able to see the words from the menu screen. I'm not sure what other tests to try.

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The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Posted on Dec 19, 2016

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Posted on Jan 02, 2017

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I have a question about the Power Supply Board in a LG 32LN530B-UA that does not have picture or sound. I do not appear to have all the voltages on the P201 connector that I should.


So did you check out the various components involved in creating the missing voltages? Transformers, caps, diodes, transistors, etc. Did you get the schematic for the power supply and scope it out?

Things do not just fix themselves - you have to check and probe for clues.

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place a turned on torch against the tv screen while tv on can you see a picture ? If yes then back light problem possibly inverter that powers the back light.
You tubesearch on tv faults for more insight on possible causes of black screen or no screen on Tv's

if no picture with torch then it might be main board .
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If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

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How can i unlock my 32LH20-UA


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Keylock can be released. You can get details about it from page [63] of its user manual. I can't copy the procedure from that page to you. as this window does not allow me to uplaod any PDF file. If you haven't its user manual with you now, contact me by Fixya comment box, and send you Emai ID by it. I'll send a copy of it to you by return mail. OK.

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