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Topic:
Fujitsu plasma screens making noise??
This thread has 12 replies. Displaying all posts.
Post 1 made on Saturday October 9, 2004 at 00:23
robsaudio
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I have done two Fujitsu Plasmavision 50" tvs with same problem on both jobs.I did install IR repeater with plasma friendly IR receiver ( Xantech ). First job Fujitsu plasma with TSU 6000 did not work until I left IR receiver on the other side of cabinet , but on this job it is not possible move IR receiver so far (built in cabinet around fireplace) .Distance between tv and IR rec is 1 1/2 feet. Do you guys have same problems with Fujitsu tvs?? Why plasma proof IR receiver does not work with this tv?
Post 2 made on Saturday October 9, 2004 at 02:31
AHEM
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You may be running into a situation where the TUS6000 is actually overloading the IR receiver. Have you tried using the IR receiver/TSU6000 with the plasma unplugged, and if so, did this solve the problem?

Sometimes getting the IR receivers a bit off access with the remotes can help to solve that problem. (if that is indeed the problem)

Just a suggestion.
OP | Post 3 made on Saturday October 9, 2004 at 07:51
robsaudio
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AHEM - if I turn off tv , remote works fine . Second setup has Home theater master MX-800 . THIS NOISE IS COMING ONLY SOMETIMES , usually saturday on football game what makes my customer really mad , because he is not able to mute commercial :-) . Both jobs has different set up - but Fujitsu plasma is same and problems are same. Looks to me like TV problem.....do not know
Post 4 made on Saturday October 9, 2004 at 08:51
PennyG
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Try moving your flasher, on the equipment side, a little bit off the sensor built into the equipment. IR proof repeater systems actually increase the power of the signal to get through along with the interferring light. Sometimes this increase in power will over power the equipment.
Post 5 made on Saturday October 9, 2004 at 09:06
AHEM
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Very odd. I would concur that it does seem like a TV problem based on the fact that if you turn off the TV; the problem goes away.

In the case of the MX-800, try moving the base station as far as humanly possible from the TV and AC lines. Unv. remote claims that's the reason for including 10ft. emitters. A while back, somebody posted a MX-800 troubleshooting guide that may prove useful.

I've used a couple of the 50" Fuji plasmas (with MX-800s) and both had problems that I quickly blamed on the TV. The solution to the first one was moving the emitters further away from the component's IR windows, and the second one's problems were due to an extensive Lutron dimmer system in the house that was destroying the MX-800's performance.

In the case of the 2nd system, I wound up hard wiring an Audioplex version of the Xantech piece that you're using and that solved the problem.

I'd be really interested in finding out whatever solution you come up with.
Post 6 made on Saturday October 9, 2004 at 10:21
Dawn Gordon Luks
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I had that same problem. The new Niles plasma-friendly targets are amazing.

Dawn
Post 7 made on Saturday October 9, 2004 at 13:01
vwpower44
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I had a similar problem with a 55" Fujitsu. I tried several different things. What eventually worked was a 291-80, which I thought was strange and could not explain. I set the box on to p of the plasma in the left corner of the screen. I have installed many of the 42" plasmas with Xantech IR systems and had no problems. My experience would lead be to believe that the larger the plamsa the more interference it puts out?

Mike
Stay Hungry, Stay Foolish...
OP | Post 8 made on Saturday October 9, 2004 at 21:25
robsaudio
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Sorry I did not answer longer. I was working :-(( Thank you all for your help , I will try move emitters , but what is still on my mind , that noise shows up only couple times in week . I was three times in that house to see what is happening , but remote always worked great and no noise. So I asked my customer to check flashers , when remote stop work and he found red light on them , what looks to me like noise. Fujitsu plasma screens has amazing picture , I did install many of Pioneer , Sony , Panasonic , Sharp plasma screens and I never had any big problems to solve noise trouble. Sorry AHEM but I still feel like this may be problem of Fujitsu ....
Anyway , I will try figure out and I will let you know. Thank you again .
Post 9 made on Saturday October 9, 2004 at 22:39
AHEM
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I don't know if this will help or not, but I got this from Mike Gifford at Unv. Remote.

MX-800 and MRF-200 Troubleshooting



Make sure that the MX-800 controls components with IR only. The MRF-200 must be unplugged during this test. This is to make sure that the proper IR codes are programmed into the MX-800.


Plug in MRF-200 without flashers; do not plug it into any type of surge protector with other components. It has been found that surge suppressors and other A/V components may be sources of RF interference.


Turn on all components and with the MX-800 in the "RF Only" mode, press the volume "-" button on the audio page and observe the status light on the MRF-200. The light should turn on with the button press and then immediately go out when the volume button is released.


If the status light flickers after the button is released, this is a sign of RF interference. You will need to move the MRF-200 to a different location and repeat the above test.


The best location for the MRF-200 will be when the status light turns on and immediately turns off each time the button is pressed and then released on the MX-800.


If you cannot find an RF interference free area. Remove the MRF-200 antenna via the small Phillips head screw and repeat the above test. Please note that this will reduce normal operating range.


Plug in one emitter (flasher) into the MRF-200. Check RF interference with the above test to make sure that the emitter is not acting as an antenna.


Test the emitter (flasher) position by starting from a distance of about 3 feet from the IR sensor of the component and then gradually reducing the distance to find the location for optimal performance. Make sure that all commands and macros work correctly.


Complete installation by plugging in the remaining emitters (flashers) and positioning them for the optimal location by utilizing the above procedure.
Post 10 made on Sunday October 10, 2004 at 00:04
teknobeam1
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Is sunlight a factor?
Post 11 made on Sunday October 10, 2004 at 00:06
teknobeam1
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You could also take the IR out of the loop completely by adding an RFX1000 ( RF reciever), You might as well. For the extra few bucks, it will allow more freedom. The TSU6000 has the capability, and it works quite well.
OP | Post 12 made on Sunday October 10, 2004 at 12:13
robsaudio
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Thanks teknobeam1 for your answer. Yes , sunlight may be that problem. Remote stops work usually saturday on footballgame , what makes my customer really unhappy.I did fix problem on first job (TSU6000) ,but again - second job with MX800 has small cabinet and no way to move stuff around.
I want to collect all solutions before I will go back there , because I want to fix this . So you guys do not think this is Fujitsu tvs problem...
Post 13 made on Sunday October 10, 2004 at 21:39
geraldb
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On 10/09/04 04:23 ET, robsaudio said...
I did install IR repeater
with plasma friendly IR receiver ( Xantech ).

but on this job it is not possible
move IR receiver so far (built in cabinet around
fireplace) .Distance between tv and IR rec is
1 1/2 feet. Do you guys have same problems with
Fujitsu tvs?? Why plasma proof IR receiver does
not work with this tv?

So you are not using the RF base unit for the MX-800??
This would most likely solve your problem.
With the Fujitsu, the Audio plex Receiver works great. The Niles receiver works well on "low beam" (had lots of interference on "High" setting)


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