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greg_mitch
Joined: 03 May 2006
Posts: 5320
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| Posted: Wed Mar 28, 2007 11:39 pm Post subject: Can you hear the scan frequency?? NEC XG1100 |
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Is the higher pitched sound coming from the projector during white scenes normal? I have only ever seen my projectors up and running so I don't have anything to compare it to. It is kind of annoying in quiet bright scenes because the projector starts to scream...but otherwise I don't notice it...I am sure the hushbox will fix most of this.
TIA
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Person99
Joined: 09 Mar 2006
Posts: 4899
Location: Flower Mound, TX
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| Posted: Wed Mar 28, 2007 11:57 pm Post subject: |
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What resolution? I've heard that on some PJs when really pushing them (1080p/60 on an 8"). Not sure if it indicates something is going wrong. Curt?
Dave
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Dave
A train station is where the train stops. A bus station is where the bus stops. On my desk, I have a work station....
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greg_mitch
Joined: 03 May 2006
Posts: 5320
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| Posted: Thu Mar 29, 2007 12:57 am Post subject: |
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running 1080i through my moome dvi input card from an RCA HD-DVD player...heck i have noticed it on every input I guess.
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greg_mitch
Joined: 03 May 2006
Posts: 5320
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| Posted: Thu Mar 29, 2007 1:00 am Post subject: |
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forgot to mention that I am also having a bit of difficulty getting the moome to recognize the hd-dvd player...I have to do a dance of turning things off and on and getting everything ready...about 10 min everytime!
When I am getting this all situated the projector constantly clicks and screams and clicks and screams like it can't sync with any signal...is that normal?? Not the moome part but the clicking and screaming...I need to take a video of it so you can know what I am saying.
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klover
Joined: 30 Sep 2006
Posts: 124
Location: Winnipeg, Manitoba
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| Posted: Thu Mar 29, 2007 1:04 am Post subject: |
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I could hear a high-pitched "whine" during all white scenes (or when cranking up brightness and contrast) on my past ECP.
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Thu Mar 29, 2007 1:07 am Post subject: |
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XG's and PG's change pitch with all white. The fans get faster on a PG Xtra for certain, I can't remember if an XG does that too. But the sound does change a little bit.
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greg_mitch
Joined: 03 May 2006
Posts: 5320
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| Posted: Thu Mar 29, 2007 1:26 am Post subject: |
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ok, so i shouldnt worry too much...i didn't think it was the fans though...sounded like a syncing thing [what i remember from my crt monitor days]
but then again...i don't know much.
Thanks.
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cpenney
Joined: 23 Mar 2007
Posts: 50
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| Posted: Fri Mar 30, 2007 2:35 pm Post subject: |
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Greg, i am thinking of getting an 1100, what do you think about the pic it throws? Also, what is the noise level like, in general?
Thanx,
Colin
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incova
Joined: 27 Nov 2006
Posts: 789
Location: london
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| Posted: Fri Mar 30, 2007 4:00 pm Post subject: current |
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usually when I put either of my pjs at a higher resolution I can hear the current go higher, my fans stay consistent but the current is something you can hear asisde from them usually a low hum in my case.
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the less I know.
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dbaisey
Joined: 09 Mar 2006
Posts: 821
Location: Southern Cal LA / Seattle WA
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| Posted: Fri Mar 30, 2007 8:51 pm Post subject: |
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Hmm.. Screaming? This isnt normal. You might get a small pitch difference from the HV but nothing like screaming at you. Doug
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greg_mitch
Joined: 03 May 2006
Posts: 5320
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| Posted: Fri Mar 30, 2007 9:53 pm Post subject: |
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ok screaming is an exaggeration for a really high pitched frequencey sound. it isn't very loud but a noticeable difference can be detected on a bright white scene. I wish I had a way to record the sound...perhaps the memo recorder on my phone...let me try.
Can I upload a wav file?
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greg_mitch
Joined: 03 May 2006
Posts: 5320
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| Posted: Wed Nov 26, 2008 3:03 am Post subject: |
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Ok, I wanted to come back to this. I read something from Mark_A_W over at AVS about installing a 100 ohm resistor in line with the red LED on the deflection board to get rid of the whine...here it is..
| Quote: | If you add an 100 ohm resistor to the red lead to the deflection board fan on the XG, then the whine is knocked out of it and it sounds like any other CRT projector.
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Is this hard to do, will this cure my noise that I described above? Or is this something different?
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dropzone7
Joined: 12 Jun 2007
Posts: 1069
Location: Charlotte, NC
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| Posted: Wed Nov 26, 2008 3:36 am Post subject: |
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| dbaisey wrote: | | Hmm.. Screaming? This isnt normal. You might get a small pitch difference from the HV but nothing like screaming at you. Doug |
Edited because I can't read... 
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Last edited by dropzone7 on Wed Nov 26, 2008 4:47 am; edited 1 time in total
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Zebu Fellenz
Joined: 21 Dec 2006
Posts: 2567
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| Posted: Wed Nov 26, 2008 3:51 am Post subject: |
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I used to hear a whine on my Marquee 8000 when I was running 1080p or some other overly high resolution, I've never heard it on my G70 though.
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greg_mitch
Joined: 03 May 2006
Posts: 5320
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| Posted: Wed Nov 26, 2008 4:17 am Post subject: |
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| dropzone7 wrote: | | dbaisey wrote: | | Hmm.. Screaming? This isnt normal. You might get a small pitch difference from the HV but nothing like screaming at you. Doug |
Doug! Where you been my friend? Good to see you lurking here again. |
LOL! That post is from march 2007!
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dropzone7
Joined: 12 Jun 2007
Posts: 1069
Location: Charlotte, NC
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| Posted: Wed Nov 26, 2008 4:46 am Post subject: |
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| greg_mitch wrote: | | dropzone7 wrote: | | dbaisey wrote: | | Hmm.. Screaming? This isnt normal. You might get a small pitch difference from the HV but nothing like screaming at you. Doug |
Doug! Where you been my friend? Good to see you lurking here again. |
LOL! That post is from march 2007! |
Oh my, I'm an idiot!
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Wed Nov 26, 2008 4:59 am Post subject: |
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| greg_mitch wrote: | Ok, I wanted to come back to this. I read something from Mark_A_W over at AVS about installing a 100 ohm resistor in line with the red LED on the deflection board to get rid of the whine...here it is..
| Quote: | If you add an 100 ohm resistor to the red lead to the deflection board fan on the XG, then the whine is knocked out of it and it sounds like any other CRT projector.
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Is this hard to do, will this cure my noise that I described above? Or is this something different? |
READ what I typed again.
I am talking about a red FAN LEAD. To slow the FAN.
Not a red LED on on the deflection board (WTF?), and nothing to do with deflection or HV noise.
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greg_mitch
Joined: 03 May 2006
Posts: 5320
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| Posted: Wed Nov 26, 2008 11:08 pm Post subject: |
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| Mark_A_W wrote: | | greg_mitch wrote: | Ok, I wanted to come back to this. I read something from Mark_A_W over at AVS about installing a 100 ohm resistor in line with the red LED on the deflection board to get rid of the whine...here it is..
| Quote: | If you add an 100 ohm resistor to the red lead to the deflection board fan on the XG, then the whine is knocked out of it and it sounds like any other CRT projector.
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Is this hard to do, will this cure my noise that I described above? Or is this something different? |
READ what I typed again.
I am talking about a red FAN LEAD. To slow the FAN.
Not a red LED on on the deflection board (WTF?), and nothing to do with deflection or HV noise. |
Oops! I guess I just read whine and getting rid of it and wanted to see if it applied to here.
I don't know much about these things(obvious) so cut me some slack.
After I typed LED I did read that it was LEAD but wasn't sure about the whine comment. My fans don't whine at all they just woosh! lol
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dropzone7
Joined: 12 Jun 2007
Posts: 1069
Location: Charlotte, NC
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| Posted: Thu Nov 27, 2008 12:57 am Post subject: |
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| greg_mitch wrote: |
I don't know much about these things(obvious) so cut me some slack.
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Like you did for me when I made a fool of myself?  Just kidding...
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greg_mitch
Joined: 03 May 2006
Posts: 5320
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| Posted: Thu Nov 27, 2008 2:31 am Post subject: |
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Hey! I don't know much about CRT but I do know how to read when a post was made! hahaha
I guess I am a hypocrite huh.
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