CurtPalme.com Home Theater Forum

[napos]

I need your help on this one. The image seems to "shake" horizontally at random occasions. It lasts for a few seconds. These last few days the temperature has really gone high in Athens, and it is also very humid. Could that be a factor on any of the boards? Other than that, convergence is not affected, and focus is better than ever, after my recent installation, about a month ago. Before that, the projector had not been used for about a year. Any ideas on what I could try?
I also have a Marquee 9500Ultra, which I am not using due to some problem with fungus on the red tube and an issue with the green neck board. Could I use any of the boards of the 9500 if needed?
Looking forward to hearing from you, since there are no CRT technicians in Greece.

Nicholas

[CZ Eddie]

I would start by swapping the Ultra's CLM into the Marquee. You won't be able to use all the options, if your other Marquee isn't an Ultra. But the CLM should still perform the basic functions I think.

From there, I would try the HDM. As that is where the width pots are. These two options are super easy to swap out. Like a minute for the CLM and five minutes for the HDM (removing covers).

And then try the convergence boards on the heatsink, which are more of a time consuming swap. But still easy.

I have a feeling it'll be the CLM though. If it is, then you could clean it and reseat the chips, or press down really hard on them.

[stefuel]

Before you start swapping boards around, try wiggling the BNC sync connectors on the back of the projector and the source. You might just have a bad sync connection.

[Nashou66]

Hi Nikos, one question. What resolution are you using? If 1080p you have to make sure the sync timing is larger than 1us.

But Eddie might be right with the clm. Since the humidity and heat build up in Athens the chips might be oxidizing a bit more.

First chip to check and clean is U7 on the DPB.

Also Chips suggestion is a sound one as well.

Athanasios

[Sparky015]

clean all of the contacts with deOxit, especially the DPB on the CLM. Both my 8000 and 8500 had this problem. The other thing that added to it on my 8000 was a bad C50 on the HDM. Recapping it and cleaning the contacts did the trick. C50 will depend on what resolutions the pj has seen over the years and at how many hours.

[JustGreg]

[dvh99]

www.nashpalme.gr

[napos]

Thank you all for the quick reply. Since I am in Greece, I don't think I will find the brand names you mentioned regarding the cleaning products. What are the ingredients I should look for? Also, what method should I use for the cleaning? I have never done anything like this before. Is there a section in the main site that describes this procedure?
I have noticed that this problem is more apparent if I do any convergence or focus electronic adjustments. I also played around with the timing settings on my Lumagen HDP and that seemed to help. When I switch to another resolution with a different scan rate the problem dissipates.

[Nashou66]

Sounds to me like the timing problems. Do you see the vertical lines make a squiggly or a wavy type movement up the edge every few seconds, then about 7-10 seconds nothing then the waves again? If so then you need to increase the horizontal sync timings. Some Marquees the whole image may shake, but once again that could be just oxidation on the DPB Chip U7.

Nikos, go get some enoplima and a small tooth brush. look for 99% or better enoplima. You will also need a chip puller to remove the chips.
it look like this.



http://www.xsfans.com/index.php?main_page=product_info&products_id=113&zenid=1f071732fce46d22010aba4795bedaf8

Do one chip at a time so you do not mix them up.
dip the tooth brush in the enoplima and scrub the pins on the chip and the socket. After you do all chips scrub the whole board with the enoplima. While your doing this remove the smaller boards and scrub the pins and sockets for them as well.

I would also do every board in the Marquee this way . Clean all connectors and smaller daughter board connectors.

let them dry and put them back in.

This seller on E-bay ships woprld wide for deoxIT

http://cgi.ebay.ca/DEOXIT-PROGOLD-CONNECTOR-TREATMENTS-CLEANER-PROTECTOR_W0QQitemZ280401958904QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item41494257f8

Athanasios

[cmjohnson]

The last time I had a horizontal stability issue on my 9500LC, I fixed it by pulling the HDM and reseating the daughter board and all the
chips on it, and all chips on the HDM itself which were socketed. No further problem.


CJ

[JustGreg]

[napos]

I removed and reseated the HDM and it appears that everything is OK. The image appears to be more stable in general, also in terms of motion handling. I also got the impression that the image was a little bit brigher and sharper, with better focus.

[Nashou66]

[cmjohnson]

Oh, I spoke too soon.

I have a Moome DVI card in my Marquee. It SOMETIMES works at 1080p but not always. But I can't say if that issue is with the card
or the player or the length of cable gong to my Blu-Ray player. (I am using an HDMI cable with an HDMI to DVI adapter at the Moome card.)

In the past, at 1080p, after the PJ had been running for a while I'd get a rapid horizontal vibration in the picture, strongest at
the top of the picture and weakest at the bottom.

I haven't seen it in months but last night it came back near the end of a movie. I can temporarily get rid of it by switching to a lower
resolution for a few minutes and then going back to 1080p, but eventually the shake will always return.

I don't think that this is going to be a bad connection problem. My personal guess is that I have an electrolytic cap on the HDM that's
starting to give out. Its ripple current increases as it gets hot in use. Just my guess.


CJ