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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Thu May 19, 2016 5:51 pm Post subject: |
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| ElTopo wrote: | Still have the TV one 1250 units.....
What happened again to your 909 ? |
Quads kept blowing but all good now 
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Proud owner of stacked 909's on a 12 ft wide 16:9 screen.
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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Sun May 22, 2016 7:18 am Post subject: |
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Well Guess what? Same projector blew another quad, 6 in total now, I have a feeling there is something else causing the quads to blow, I have heaps of boards, what should I replace?
BTW I noticed a slightly burnt smell this morning when I fired them up, looked inside but saw nothing, a few hours later lost pic.
Getting sick of this thing 
Dave
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Sun May 22, 2016 7:25 am Post subject: |
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Well the quad is working together closely with the EHT board, so that is the first suspect, but I guess you already changed it...
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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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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Sun May 22, 2016 7:39 am Post subject: |
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| gjaky wrote: | | Well the quad is working together closely with the EHT board, so that is the first suspect, but I guess you already changed it... |
Im on my 3rd EHT as well
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Sun May 22, 2016 7:44 am Post subject: |
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| gjaky wrote: | | I guess it's not your first splitter either then... |
Second, the one in it is brand new
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Sun May 22, 2016 7:48 am Post subject: |
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What about the tubes are they original, how many hours, etc.
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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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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Sun May 22, 2016 7:53 am Post subject: |
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| gjaky wrote: | | What about the tubes are they original, how many hours, etc. |
Tubes are original, 22000 hours on both pjs, no burn, spotless
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Sun May 22, 2016 8:00 am Post subject: |
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Well the EHT system on the barco is pretty much isolated from the other parts since it runs directly off the mains voltage, and since the tubes are the last thing which you did not change yet, so perhaps it's time. Your tubes are served a lot, perhaps one of them loads too much the EHT system which kill your quads with time.
BTW did you compare the quad's temperature in the ill machine with the other machine's?
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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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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Sun May 22, 2016 8:21 am Post subject: |
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I wouldn't know how to check that.
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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Sun May 22, 2016 9:18 am Post subject: |
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Well something interesting just happened. I opened the case to check the fuse on the eht, but I turned on the machine and I have HV. I left the machine on for an hour with no issue, so I decided to close the lid and as soon as I did I lost pic to tubes. Open the lid and turned machine on and have pic again.
Now I do have an 808 quad in the 909 which the focus coil is taped up with electrical tape, that focus lead is just dangling and sits on the case as I close it, is it possible that maybe there is arching even though Ive taped the crap out of it? If there was arching Id hear it, no ?
Dave
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gregstv
Joined: 27 Aug 2007
Posts: 628
Location: Australia
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| Posted: Sun May 22, 2016 9:39 am Post subject: |
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On my 908 I have cables tied it to the centre fan. This keeps it away from the chassis and lid.
I can send you a picture if you need.
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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Sun May 22, 2016 9:42 am Post subject: |
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| gregstv wrote: | On my 908 I have cables tied it to the centre fan. This keeps it away from the chassis and lid.
I can send you a picture if you need. |
Thanks Greg will tie it away from chassis. I hope this is the issue.
Dave
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ElTopo
Joined: 07 Nov 2006
Posts: 1640
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| Posted: Sun May 22, 2016 3:41 pm Post subject: |
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Strange issue. Hope you get it back on the track soon
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Barco Cine 9 the one and only
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Francisco
Joined: 05 Apr 2007
Posts: 305
Location: The Netherlands
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| Posted: Thu May 26, 2016 7:30 am Post subject: |
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That's a EHT feedback lead? If you only taped it then it's probably your problem. Bend the ending of the cable just 1,5cm put shrink sleeve over it and shrink it. Then put another 2 or 3 shrink sleeves over it, so it will be very well isolated.
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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Thu May 26, 2016 8:14 am Post subject: |
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| Francisco wrote: | | That's a EHT feedback lead? If you only taped it then it's probably your problem. Bend the ending of the cable just 1,5cm put shrink sleeve over it and shrink it. Then put another 2 or 3 shrink sleeves over it, so it will be very well isolated. |
Nah I've been doing it this way for a few years now with no issues, its bloody cocooned in electrical tape 
BTW
Took a screen shot from my phone with one 909 running compared to a JVC HD750 AKA RS20
Dunno why colours look odd but it was taken from my phone.
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ElTopo
Joined: 07 Nov 2006
Posts: 1640
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| Posted: Thu May 26, 2016 8:43 am Post subject: |
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What shot is the 909 ?
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huggy
Joined: 02 Aug 2008
Posts: 927
Location: Melbourne,Australia
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| Posted: Thu May 26, 2016 9:01 am Post subject: |
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Top one sorry 
Dave
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ElTopo
Joined: 07 Nov 2006
Posts: 1640
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| Posted: Thu May 26, 2016 2:38 pm Post subject: |
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What are those yellow stripes ?
Which one is color calibrated 
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gregstv
Joined: 27 Aug 2007
Posts: 628
Location: Australia
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| Posted: Thu May 26, 2016 8:28 pm Post subject: |
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How does the stack compare with the JVC?
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