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Revox
Joined: 13 Feb 2008
Posts: 158
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| Posted: Sun May 29, 2016 9:54 am Post subject: NEC PG Syn Problem / Pattern Generator ? |
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Hello Guys,
It's a long time that i worked on an PG 9 Maschine. My friend, for whome i installed the PG maschine a few years ago had some problems with his unit.
For me it looks like a "digital" or "sync" Problem. What do you think?
https://www.dropbox.com/s/az3r5g9gujwo5b4/IMAG0158.jpg?dl=0
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Sun May 29, 2016 10:32 am Post subject: |
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NEC plain PGs at these days all suffer from capacitor leaking, that can cause all kind of problems you can imagine. All capacitors needs to be replaced. period.
As for this problem it is most likely caused by the POINT board, pull it out to see if it gets better.
_________________
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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Revox
Joined: 13 Feb 2008
Posts: 158
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| Posted: Sun May 29, 2016 10:42 am Post subject: |
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I am sitting with a lot of boards on my knees. I think this will be a lot of work.
Do you know if the powersupply has "better" caps (other producer like in Marquees?)
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Sun May 29, 2016 10:46 am Post subject: |
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The power supply was made by Rubycon, who supplied the most of the capacitors to the NEC anyway, so unfortunately no, the power supply isn't better either.
_________________
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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Revox
Joined: 13 Feb 2008
Posts: 158
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| Posted: Sun May 29, 2016 12:09 pm Post subject: |
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Ok, i think this pg is going to dump ;-(
I don't have the time to repair the whole maschine.
Greetings, Stefan
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