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NEC XG135LC Picture Problem

 
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ortwin20000




Joined: 23 Nov 2014
Posts: 33



PostLink    Posted: Thu Oct 19, 2017 9:00 pm    Post subject: NEC XG135LC Picture Problem Reply with quote


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Hi,
after my search for an replacement glas for an NEC PG9200 i could get my hands on an NEC XG135LC.
I transfered this unit from germany to austria and had no problem to install it on the ceiling.

After setup for Laserdisc PAL and NTSC with a Cinemateq-Scaler went ok i am using a HTPC with NVIDIA ION 2 Graphics-Card to drive it with 1080p72 and 1080p50 and Kodi on Windows.
The first three days i haven't got any problems with this resolutions. Running time was probably 1.5 to 2 hours a day.

But today i powered up the projector and it gave me a problem with the picture. I don't know how to describe in english so i tried to make a video:
https://youtu.be/_pgWVNEcpRo

It shouldn't be a heat problem and the unit is in very good condition. What could be the problem? The owner before me was using it also with 1080p72.

The unit is modified with a fan mod from fft on the beisammen.de-Forum.

I tried it again with Laserdisc and without any input and the problem is also there. Could it be the input card?
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gjaky




Joined: 05 Jun 2010
Posts: 2789
Location: Budapest, Hungary


PostLink    Posted: Fri Oct 20, 2017 10:18 am    Post subject: Reply with quote

If you are lucky it is a contact problem around the C-Drive board or V-drive board, then you can try to reseat their connectors. Otherwise it could be that either of these boards are start failing.
_________________
projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
current: VDC Marquee 9500LC
The MOD: VNB-DB, VIM-DB
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Curt Palme
CRT Tech



Joined: 08 Mar 2006
Posts: 24296
Location: Langley, BC

TV/Projector: All of them!


PostLink    Posted: Fri Oct 20, 2017 1:45 pm    Post subject: Reply with quote

That's a common problem. Get a can of DeOxIt spray cleaner, and clean the red/blue horizontal yoke connectors and pins on the H board. That should do it.
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ortwin20000




Joined: 23 Nov 2014
Posts: 33



PostLink    Posted: Fri Oct 20, 2017 2:24 pm    Post subject: Reply with quote

Thanks for the infos. I tried to check the c-drive and v-drive but wondering why it is happing after a few days working.

@Curt
Can i also use a WD40?
At the moment we have a children's birthday party. I will try it later and give feedback.
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Curt Palme
CRT Tech



Joined: 08 Mar 2006
Posts: 24296
Location: Langley, BC

TV/Projector: All of them!


PostLink    Posted: Fri Oct 20, 2017 2:52 pm    Post subject: Reply with quote

NO!!!! No WD40! It's flammable, and is not good for any electronics!
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ortwin20000




Joined: 23 Nov 2014
Posts: 33



PostLink    Posted: Fri Oct 20, 2017 5:36 pm    Post subject: Reply with quote

Ups Shocked

Will look tomorrow in our shop in town.
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ortwin20000




Joined: 23 Nov 2014
Posts: 33



PostLink    Posted: Sat Oct 21, 2017 8:00 am    Post subject: Reply with quote

Curt Palme wrote:
That's a common problem. Get a can of DeOxIt spray cleaner, and clean the red/blue horizontal yoke connectors and pins on the H board. That should do it.


Thumbs Up

I cleaned the connectors and the problem went away. Problem solved.

But i don't understand why it happend after three days. I didn't changed anything.
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