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Aric
Aric, Technician
Category: TV
Satisfied Customers: 43351
Experience:  15+ years in the field. Owner of AV Installation, OEM and Repair company
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Lg tv mod#50pn4500-ua turns off and on automatically
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Customer Question

Customer: ***** *****, lg tv mod#50pn4500-ua turns off and on automatically
JA: Thanks. Can you give me any more details about your issue?
Customer: works fine till you use the volume control on the side of the tv, then it shuts off, turns back on by itself when it want
JA: OK got it. Last thing — JustAnswer charges a fee (generally around $18) to post your type of question to TV Experts (you only pay if satisfied). There are a couple customers ahead of you. We can help you for less if you're not in a rush. Are you willing to wait a bit?
Customer: pay 18 bucks to tell me its the board and it costs more than the tv did new?
JA: OK. Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.
Submitted: 1 year ago.
Category: TV
Expert:  Aric replied 1 year ago.

Hello, This is a fault with the mainboard of the set. This board processes the remote commands and also generates the turn on/off control in the set.

The only thing you can try on a user level is leaving the TV unplugged for several hours or more (overnight is best), to see if the EEPROM (processor) resets. I don't have high hopes for this though.

If the issue persists beyond that then the Mainboard in the set needs to be replaced. If you're a DIY type then the mainboard can be purchased at the link below for your set:

http://tvpartscanada.ca/tvdetail.php?id=5646

Expert:  Aric replied 1 year ago.

Alternatively if this is not something you're comfortable with, the a shop will generally charge $300 parts and labor for this repair and can be located at the following link:

http://www.tvrepaircanada.com

Other than that, sorry for the bad news on this one.

If you need further assistance let me know. Please do not forget to click the 5 STAR RATING, at the top of the page for my efforts. It is my livelihood and you can follow up at any time if needed.

Customer: replied 1 year ago.
Not the remote the buttons on the side
Expert:  Aric replied 1 year ago.

The buttons on the side and the remote are both processed through the Mainboard- it processes all of these commands. So it does not matter if it shuts off with the volume controls on the TV, the original remote, or a universal remote- this still indicates the Mainboard needs to be replaced.

Expert:  Aric replied 1 year ago.

The Mainboard is getting a command for volume- but instead shutting itself off which indicates a faulty EEPROM (processor in the set). The answer above outlines what needs to be done to fix this. Sorry for the bad news on this one.

If you need further assistance let me know. Please do not forget to click the 5 STAR RATING, at the top of the page for my efforts. It is my livelihood and you can follow up at any time if needed.

Customer: replied 1 year ago.
What goes wrong on the main board?
Expert:  Aric replied 1 year ago.

The EEPROM fails- its the processor as stated above in my answer.

Expert:  Aric replied 1 year ago.

Do you need further assistance with this?

Customer: replied 1 year ago.
Already replaced that board... was looking at it when you were replying
Customer: replied 1 year ago.
Can't finish this won't let me rate it