I'm trying to figure out my dad's tv problem. It's an Emerson LC320EMXF. We had a lightning storm and it was hit. I'm guessing there was a surge of some sort. It went right past the power strip and got the TV. When you hit the power button, it blinks the red LED and then goes back to solid. Nothing comes up on the screen. I've been doing a little research and have found the inverter boards with the ballasts will go bad but usually just one will go bad. Could this be the problem and how can I test it.

Hi,

This is highly suggestive of power board failure. If there is any power surge, try to plug in the TV directly to the socket. Use any other socket to see, whether there is an issue with the socket or TV. If the problem persists, disconnect the power supply for few minutes, say 15 minutes and then turn it ON. If the problem still persists, then it is an internal failure and needs repair.

This is most likely neither mainboard or inverter board problem or any other problem.This is a common problem and most of the times power outages would result in blowing caps or IC's on the power board.Be advised if you have electronics repair experience and would be able to keep precautions, then attempt to repair this unless you should take to the shop ( that would save trip charges that most of the techs take ). If you have experience and wanted to fix it yourself, revert and i would be able to provide few pointers. If you need to replace power board, then you could buy it yourself and then provide the same to the shop as most of the shops do earn a handsome margin on parts. Usually shop shops are preferred, as they could repair the board unless big service centers usually replace the board.

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

You can test the 2 zener diodes on the input directly from the wall outlet power cord.First unplug the TV.Set a multimeter/ohmeter to a high ohm setting.It should read a fairly high resistance one way,then switching the probes,it should read infinity the other way.If you do not have knowledge of the meter,the circuit boards need to be exactly the same.Turn it on and observe the lightes diodes for what they do,perhaps take a video of it.I just found out that my digital camera takes video so you can use that if available.Then switch the boards and do the same.Compare the 2 videos and look for a difference.All of this MAY find something wrong with those boards,however a lightning strike is capable of blowing many components.If it were me,I would buy a new one if you have the money to do it.Lightning strike is not warrantied and even if you tried to,they would know it was hit by lightning.The surge protectors sold at most stores for about $5 should not even be able to be classified as that.They are basically an extension cord with a switch,nothing more.A good surge supressor will have a monetary guarantee.August 2009 a lightning strike fried my hard drive which was hooked up to a $5 one.Now I have a Belkin.They start out at about $20 but they guarantee up to $50,000 worth of equipment plugged into it,with no receipt needed.When I was researching it,I called them to find out what was necessary for replacement.They also have different variations up to 12 outlets for $300,000.Recently I found out that Belkin was made in the Phillipines so I am currently searching for an American made one to recommend.I live in the lightning capital of the USA and have had no problems since purchasing the new one.If you have any questions or need more help,just comment here and I will get an autolink to your post and reply ASAP.I really encourage responses so I can follow up properly as I know where you stand and asking someone else restarts all the explaining because we cannot see other 'Expert's' responses.Good luck,Greg


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