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remote control question

R

rogv

Jan 1, 1970
0
I have an old Mitsubishi Tv and the remote control does not work.
The only way to add cable TV stations is through the menu of the
remote control.
Can I use any universal remote control to add the stations or it has
to be a Mitsubishi remote?

thanks
 
J

JeffM

Jan 1, 1970
0
rogv said:
I have an old Mitsubishi Tv and the remote control does not work.
The only way to add cable TV stations
is through the menu of the remote control.
Can I use any universal remote control to add the stations
Well, some can be had for <$5. I'd say it's worth a try.
When something says "universal" and it isn't, I take it back.

The one I'm using cost 99c and does 100% of the original for my TV,
and 95% of the original for 2 each VCRs.
For my needs, that was worth the price.

There are other units that are quite expensive.
http://www.google.com/search?q=Harmony+remote
or it has to be a Mitsubishi remote?
Got any second-hand stores near you (e.g. Salvation Army)?
Many have a bin full of old remotes.
 
B

bahrouz

Jan 1, 1970
0
you can try to test the remote control by using it on AM radio
receiver , if you hear pulsing sounds so it should work and the
problem is in your tv receiver
 
K

Ken

Jan 1, 1970
0
Remote controls don't use RF. Modern remote controls use IR (infrared).

Modern remote controls are going to use RF soon.
 
I

IanM

Jan 1, 1970
0
msg said:
That was my initial (internal) reaction to that suggestion until I
suspected
that the respondent meant to check for digital circuit RFI which the remote
may radiate and be detected by the radio (sometimes FM works better for
high clock frequency circuits, and certainly a shortwave radio would permit
tuning to a sweet spot to listen to digital noise as the various buttons
are pushed).

I will try it with various remotes and report the results; to be useful,
the noise patterns would need to map well to button presses.

*AND* be radically different if the IR LED is faulty. That *may* be the
case if its open circuit, but if its gone short, I'd not expect much
change. At best its a quick way of checking the RC isn't totally brain
dead.

I always favoured an IR photodiode mounted in a BNC plug with a black
rubber shroud (off a large croc clip and cut to length) to exclude
ambient light. It used to live on the 3rd channel input of the scope
when I was doing TV work. Nice clear pulse signal as the scope's
1M/30pF integrated the ~40KHz carrier so easy to check the different
buttons gave different signals.

For a rough function check I'm sure most of us know that IR is visible
on most mono and some colour video cameras so just point it at the
shop's CCTV and press the buttons. If using an unfamiliar camera try a
known good RC first to confirm the camera can see IR.
 
A

att

Jan 1, 1970
0
IanM said:
*AND* be radically different if the IR LED is faulty. That *may* be the
case if its open circuit, but if its gone short, I'd not expect much
change. At best its a quick way of checking the RC isn't totally brain
dead.

I always favoured an IR photodiode mounted in a BNC plug with a black
rubber shroud (off a large croc clip and cut to length) to exclude ambient
light. It used to live on the 3rd channel input of the scope when I was
doing TV work. Nice clear pulse signal as the scope's 1M/30pF integrated
the ~40KHz carrier so easy to check the different buttons gave different
signals.

For a rough function check I'm sure most of us know that IR is visible on
most mono and some colour video cameras so just point it at the shop's
CCTV and press the buttons. If using an unfamiliar camera try a known
good RC first to confirm the camera can see IR.

Or if you have a webcam on your computer, watch your picture and push
buttons on the remote, you should see the LED flashing light blue.
 
J

Jerry

Jan 1, 1970
0
Modern remote controls are going to use RF soon.

The remotes for my Qwest 2-way cable are hybrid - IR for on/off and
volume (cuz those are TV functions), and RF for everything else (cuz
that stuff's in the gateway box).

Jerry
 
S

Samuel M. Goldwasser

Jan 1, 1970
0
att said:
Or if you have a webcam on your computer, watch your picture and push
buttons on the remote, you should see the LED flashing light blue.

Or one could check the IR Remote Repair FAQ. Now what a concept? :)

--
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W

William Sommerwerck

Jan 1, 1970
0
That was my initial (internal) reaction to that suggestion until I
suspected
that the respondent meant to check for digital circuit RFI which the remote
may radiate and be detected by the radio (sometimes FM works better for
high clock frequency circuits, and certainly a shortwave radio would permit
tuning to a sweet spot to listen to digital noise as the various buttons
are pushed).

I thought the same thing, but if the LED were defective...
 
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