Question about Standard (CRT) Televisions
Saw your name attached to someone with a problem with their remoteon a Toshiba 32af43. TV vol, input are in and out making me think its a loose connection.
I thought it was batteries, changed them... reprogrammed Directv, it now sometimes will control the TV and input, but most of the time not. The Toshiba remote does not work either. It must be the IR LED, but why would it work sometimes and not others?
I took of the back of the TV and it looks tight to get in and solder. I have no clue what I'm looking for or at. Service manulas are available but only for $... I'd rather save the money if it ends up I can't fix it anyway.
If you have any leads... let me know at email@example.com
or even 919 599-8198.
I appreciate it.
The Ir led is usually behind a dark window, you can locate it by doing a command while real close to the tv,
once you find it then see if it takes commands all the time.
if it takes a command and waits a while to take another then the power to the ir led is likely the issue, as you said it may have a loose connector at it or the connection to the main board.
one way to give it power is to solder a 10 mfd cap across it and it will store some power for you, thats only a temp fix and you will likely get the polarity wrong.
there are tons of Ir leds on the market and even radio shack still carries them. though they are a transistor and need biased , sometimes just replacing them randomly an they work fine as they are all low power.
this is the basic circuit for a detector
notice the change in the ir causes a change in voltage and is transmitted down the line.
this is likely what you have in your tv now
it has the same circuit inside it
you can monitor the output as it fluctuates but it will be fast.
the next best to save is to just use an external tuner and speakers they will sound better anyway.
Posted on Jun 10, 2008
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