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2010-01-15
, 03:08
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Posts: 819 |
Thanked: 806 times |
Joined on Jun 2009
@ Oxnard, Ca.
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#23
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2010-01-15
, 03:15
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Posts: 232 |
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Joined on Nov 2009
@ Warren, MI, USA
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#24
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2010-01-15
, 04:19
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Thanked: 160 times |
Joined on Dec 2009
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#25
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Just to add more to this...I have experienced this on a normal television as well (meaning, not an in-car display). We have a 27" low-definition screen at my workplace that will not display a picture coming from the N900 no matter what video input I try (video 1, 2, or front 3) or in what order I connect the cable.
But at home I have no problems getting it to display pictures on either my 36" Panasonic, or my 32" TV. All of these are low-def screens too, no plasma/lcd high-def displays. Just old school TV's with component in.
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2010-01-15
, 04:27
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Joined on Nov 2009
@ Warren, MI, USA
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#26
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2010-01-15
, 05:03
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Joined on Jan 2010
@ Markham Ontario Canada
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#27
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2010-09-25
, 07:50
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Posts: 3 |
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Joined on Sep 2010
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#28
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In your very first post you said "I have tested other devices with the plugs, so I know that they are working"; what do you mean, because the "pinouts" of the Nokia CA-75U cable that comes with the N900 are not "standard"? If you are trying to cable from the N900 using a camcorder style A/V cable (3.5mm to RCA white/red/yellow) it will not work since Nokia uses a different section of the 3.5mm jack for "ground" than is used by almost every other manufacturer.
Just thought I would ask - if you are using the Nokia CA-75U cable then obviously it is another problem than incompatible cables.
Hope you get it sorted!
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2010-10-04
, 16:10
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#29
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2010-11-23
, 07:49
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Joined on Nov 2010
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#30
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I checked my Nokia supplied cable (75U) with three different TV sets that have RCA video input connectors. I only get a picture and sound with an older Sony set (old enough to have a conventional tube screen). Two modern LCD TVs are not interested. As mentioned before in this thread, I think it is the input impedance to the TV "seen" by the N900. I will try when I am back home from my travels, to connect a 75ohm resistor to the video lead and look on the connector to see if I get composite video on an oscilloscope, and not if the impedance is AC coupled.
This is, of course, far from changing the output resolution...
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Interesting images - apart from seeing a good old VM700 that is
The TV is a receiver and sends to signal back to the N900 so there is no signal to tell the n900 that a TV is connected to it.
Personally I am thiking along the lines of the NOKIA detecting a TV connected by looking at the load impedancce of the device connected to it. Eric could probably easily prove this to us by connecting a resistor in series ( to increase) or parallel (to decrease) the impedance of his VM700 and then seeing if the nokia outputs a signal still after it is connected.
It is not unheard of to get TV's which are out of spec in this regard - we manufacture set top boxes and have found some brand name TV's to get this wrong too (also we have found some to be AC coupled instead of DC which also affects the impedance). It could be that your TV is wrong and not the nokia.