CurtPalme.com Home Theater Forum

[AnalogRocks]

Take a 3 second brake every 7 seconds? Close you eyes and relax....

[AnalogRocks]

Take a 3 second brake every 7 seconds? Close you eyes and relax....

[Nashou66]

[AnalogRocks]

Just trying to help ( and steer you hopelessly off topic on a tanget worthy of a math professor )

[AnalogRocks]

Just trying to help ( and steer you hopelessly off topic on a tanget worthy of a math professor )

[Nashou66]

UPDATE: I recently finally figured out how to use the Marquee Librarian and saved the settings from my CLM that i believe is causing the squigglies to another CLM I have. With this CLM the Squigglies are also here as well, note that they get worse as the PJ warms up. I thought before this happend it was the HDM because I re-soldered the critical points on the HDM according to MP Maintenance thread, and it worked for a day but came back again with the that combo. I Aslo tried another HDM and that had the same results, Squigglies! So now I damaged my original HDM(stupid on my part while probing votlages) and am using the new HDM with the new CLM and the squigllies still show up but not as bad and take longer to get to the same annoying point as the old configuration. So what could else should I be looking at. It almost seems like dirty power, but changing outlets does not help. I have also tried different LVPS but have not changed out the HVPS.

Athanasios

[Nashou66]

Update #2:

This squiggly problem i am seeing is on my floor mounted PJ , I also have a ceiling mounted 8000 that has the same source for when i want to stack the two. I decided to test to see if it was a power problem causing it as stated in the previous post. Well with that PJ the same problem was there!!!!! So It is not PJ or board related. I have my HDQ going to a Geffen DVI splitter then it continues on to each projector, while the image was showing i pulled the power out of the DVI splitter and waited a sec and plugged it back in, the squiggly's were not as pronounced. Now I'm getting closer. I had this splitter pluged into the non conditioned power outlet below my equipment rack. I moved the splitter off of my HDQ and put in the back of the rack against a side wall away as far from any other equipment as I could. then I plugged the wall wart for the splitter to a power conditioner and the squigglies were very much reduced, all I have now is a slightly moving green grid, back and forth, it might be the red have to pay closer attention but its very very small and slow moving. So I think the cause of the humm in my speakers is also causing the squigglies. So I hope that once i eliminate that ground loop all will be fine. that will be a pain the Arse for sure. Ground loops are difficult to pin down.

Athanasios

[JustGreg]

I had a case of the squiggles too but the doc gave me something for it. (badooom-CHA!)
I did everything you've done so far (except blowing up an HDM) and when it still didn't go away I pulled the projector down to the frame and scrubbed the card edge pins and sockets liberally, and every grounding point (screws for PS's too), every socketed chip was pulled and scrubbed as well as the sockets, basically everything that pinned, plugged, pressed, socketed, etc. It went away but because of the major renovation I couldn't begin to tell you where the problem was.

It's been running great for two years now. No drift, no noise (well, minimal raster noise with no source connected). The only thing I have to do is get off my dead ass and maximize raster before it's too late. I have to find the procedures and hope it doesn't involve the width slugs. For some reason I'm phobic about touching them (yet I've had my hands wrapped around the coils while it's running).

[Nashou66]

This machine has been torn down cleaned and rebuilt, and why would me second PJ show the same exact symptom? It most definitely is power related or source related. Just have to figure out what, and since I know I have a Hum in my Audio I will start with the ground loop problem. It might be as simple as a loose ground wire in one of my outlets.

Athanasios

[Nashou66]

I went through all my outlets and corrected reversed polarities and some loose grounds and that made the hum in my audio much louder and the squigglies still remained.
So i began by unpluging equipment power cords one by one, no change, then onto the video connectors starting with sat and antenna, wouldnt you knw the last one i checked the LG Bh100 hdmi cable caused the hum. changed cable...still there. So I decided to atach a ground wire from the LG BH100 to the Monster HT 3500 and the hum was not heard any more from the equipment room, it was that loud before. Now onec in the room i needed to get my ear right up to the speaker to hear it, and with the Squigglies its the same, I needed to get right up to the screen to see the internal grid pattern from my lumagen to notice slight moving of the grid and dots back and forth very slowly. Still not perfect but much much better.

I wonder if adding a ground wire from the lumagen to the LG or the HT 3500 would help things more but the Ground from the HDMI/DVI should be enough, right?
What would be the next step to totally eliminate this annoyance?

Athanasios

[AnalogRocks]

Maybe running a ground all around to every component then to a ground rod right outside the theater? It's over kill but then again what isn't with this hobby?

[AnalogRocks]

Maybe running a ground all around to every component then to a ground rod right outside the theater? It's over kill but then again what isn't with this hobby?

[Nashou66]

I was thinking this too, connect the ground from my theaters panel box right to a new rod outside, I think this one is connected to the same pipping of the rest of the house.

Athanasios

[AnalogRocks]

One caution here though. A friend of mine did this for his ham radio gear, and ended up with a better ground than the house had. SO when he grabbed his silver eagle to transmit he got shocked.

Test for potential voltage between the coaxial cables coming into the house to your new ground. I ran into this at my fathers place a few years back. I grabbed the TV cable while leaning over the server and had 125volts flowing down my arm. Coincidentaly my friend Cam, the ham radio man was standing behind me. He said now you know how I felt at my old place

[AnalogRocks]

One caution here though. A friend of mine did this for his ham radio gear, and ended up with a better ground than the house had. SO when he grabbed his silver eagle to transmit he got shocked.

Test for potential voltage between the coaxial cables coming into the house to your new ground. I ran into this at my fathers place a few years back. I grabbed the TV cable while leaning over the server and had 125volts flowing down my arm. Coincidentaly my friend Cam, the ham radio man was standing behind me. He said now you know how I felt at my old place

[Nashou66]

Ok the squigglies are still there and I cant figure it out , it only noticible with the LG player my Sat box on HD is fine if any movement its very very very very small compared to the very noticible LG player. So i was noseing around the PJ with my osciliscope checking random things to lear more about using one and I found something intresting that might be causing the squiglies or at least help me find what it is,. So i was probing the +/- 24 volt lines on the CVA and was measureing voltage with it practicing my divisions stuff and i decided to try to touch the probe tot he chasis of the PJ as I should get a straight line for no voltage. Back heat sin to back heat sink fine, FCM to FCM fine, VNB cover to VNB cover fine then HDm to HDm Fi.... WAIt A minute!!!!! I got a wave on it !!!! tried it again, Yepp something is going through the HDM cover so I touched all other parts of the chasis ground to the HDM cover and got that wave, it is high in amplitude at the begining of the trace then evens out across the screen with less amplitude as it goes, What is it? And why is it only there? if i touch say the FCM cover to the back heat sink nice an straight line if i go from HDm to FCM or any other part i get the wave form..?Could the LG be adding it to the horizontal signal? Hmmm Anyone? TSE?

Athanasios

[Nashou66]

Just follow up on the squiggly issue, I hooked up my TV-one blend unit and it went away, so I assumed it was the Lumagen HDQ. TSE in an earlier pm told me to try some timing settings and it reduced it some but i still thought it was a noise issue from the BD player or the HDQ. So I sent Lumagen Support an e-mail and Jim Peterson responded and also told me what Scott said, it's A timing issue.(using 1080p@48) He told me to make the H timings longer, so I bumped up the HSYNC from 15 to 50 and the HFRN from 10 to 20 and the HTOT from 1125 to 1280 and all gone. So anyone who has a Marquee they are very finicky to timing numbers, short timings are not good for a stable image on the marquee.

Athanasios

[tse]

The Marquee is not happy with horizontal sync less than 1us in width. That usually causes flagging at the top but instability in the h defl could happen, too.

Scott

[Ohmess]

[Nashou66]

48 is a multiple of 24 that my LG player outputs, I could do 1080p@60 but this is a bit higher bandwidth and There is a slight Judder at 60, with 48 its smoother pans. Some say they see flicker on the screen at 48 but i don't it's on the tube face but it is'nt transfered to my screen. Just try it and see.

Athanasios