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My son's 15in LCD tv by Waltham turns off as soon as we try to change the channels - either by remote or by the panel. The TV is only 10 months old. So as you can imagine, he can not use his TV at all - which he uses for playing game consoles rather than watching programmes. Thaks

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Hi, The problem comes from what we would call a "contaminated circuit board". The board has to be replaced or repaired. Since the Television is less then a year old, I am sure the manufacturer has a 90-day parts and 1-year labor warranty policy. Contact the manufacturer would be the cheapest method of replacing the unit. Thanks, Mike H.

Posted on Nov 01, 2008

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Posted on Jan 02, 2017

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Toshiba tv 40rv525u has started to change channels


My TV 40RV525U changing channels, menus itself for few months ( I use antenna).
my son tried to stop the channel scrolling by enter weird number into the channel to stop it scrolling such as 555, 777..
later, it turn on off by itself and unable to hold on a channel
I call Toshiba customer service and they ask money $25 for troubleshooting but I denied since I do not want to waste money and time.

Now, I found how to fix it myself.

In my case, something was wrong with the signal comes from the button control on the left side of the TV.
========================
What I did
========================
unplug the power cord.
Remove back cover.
Look into the motherboard ( biggest green at the center).

First, I disconnect a connector on the motherboard come from the IR board that receive the wireless signal control ( meaning the remote is disable).
I turn on the TV, press on Menu button on the TV side. Menu is still scrolling.

I turn off TV, disconnect power cord and connect the IR connector back to the motherboard.
I then disconnect the nearby connector that comes from the side control buttons.

Turn on the TV by remote, press menu button on the remote to check. The menu stays.

DONE.

I use electric tape to seal off the connector and let it hanging there.
Close the TV back panel

I have been watching TV for 3 nights without menus/channels scrolling.
NO AVAILABLE red message when watching DVD is no longer existed.

Hope this help someone else.

Jan 20, 2012 | Toshiba 40RV525U 40 in. LCD TV

1 Answer

Can not change the channels on my Sony Bravia KDL-46V3000. The remote will turn the TV on and off but will not change the channel.


Is this the original remote or a universal remote? Can you change the channel with the buttons on the right side of the TV?

Can you type in a channel number and go to that channel? (this applies if the channel will not change with the buttons on the TV.) Try to rescan the channels (it could be that the TV has the other channels hidden (or lost the list).

If it is a universal remote, you may not have the correct code (just a close one). Try additional codes for Sony TVs. Also when was the remote built? If it was programmed more than 6 months before the TV was released, then it will not have the correct codes. You would need a newer remote. A substitute remote can be obtained from https://servicesales.sel.sony.com/ecom/accessories/web/productSearch.do?sessionId=4q4-Cd8shqFs_c5rcVcD_Lw or http://www.remotes.com/remotes/servlet/rs?a=Search&o=c&uid=0&m=KDL-V32XBR1&uuid=12842263276080 .

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1 Answer

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Alas, I have been through this with my children and unfortunately outside of a Parental Channel lock, I have not heard of a vendor who has created the capability of locking the set controls. It's just the unfortunate case that the controls are accessible to the child (I have another TV where they are on top and even my 9 yr old can't reach them - ha ha).Sorry my friend.

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3 Answers

Toshiba 40rv525r screen says NOT AVAILABLE


I've had the same issue! This is caused by the control panel telling the TV what to do - does it change channels on its own, too, or turn off or on on its own?

What you need to do (if you've not already done it) is lock the control panel out, which you can do under the LOCK menu.

What may help is running the factory reset on page 54.

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I have an Element 32" LCD TV that is 3 months old. Everything works except I can't change the channels. If I push the channel number, it will go to that channel, but if I try to use the remote or the...


I talked to the manufacturer & they said that all I needed to do was to run the channel search, uninterupted, again. I did it & everything works. Thank you for your input.

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Magnavox LCD HDTV starts on its own since last few months and sometimes it changes channel on its own. This problem happens intermittently and really apprecaite fix for this. This TV is 15 months old.


it either needs new front switch panel or new signal module, turn the tv on and disconnect the front switch board if it quits doing things on it's own you need a new front switch panel, if it still does functions on it's own you need a new signal board.

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Sky remote wont control on/off , volume, or terrestrial channels


Press tv on the Sky remote

press and hold select and red until the led blinks twice
type in 0 0 6 0
press the power button, if the tv turns off then the press select and the remote should work all the tv functions.

If the tv does not turn off then press tv then the power button and keep doing this until the tv turns off, once it turns off press select and it should work.

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1 Answer

LG 42LC7D TV does not want to chg channels after 5 min of use


There are some inductors that are out of spec. LG's original SB said to replace some of these with a jumper, but it only lasted a couple months.

You need to have the Total Main Assy replaced.

Jul 28, 2008 | LG 42LC7D-UB Television

1 Answer

LG Volume to 100 by Itself - will NOT respond to remote


It's hard to diagnose without a model, but, given the problem I would say it is a 42LC7.
If it is, then, it needs a modification in the main PCB. We used to jumper coils at first, now we have to change the main PCB.
It's less than a year old, it's under warranty.
For a servicer in your area that makes house calls:
Contact LG at:
(800) 243-0000
If you have any questions, reply to this post and I will respond.

Dec 15, 2007 | Televison & Video

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