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jbmeyer13
Joined: 03 Dec 2010
Posts: 1135
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| Posted: Thu Aug 01, 2013 3:17 am Post subject: Dead HVPS? |
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I turned on my Marquee and let it warm up for about 15 minutes and then shut it down prior to plugging in and running a vacuum (off a different outlet but in the adjacent room). When I turned the PJ back on the LVPS fans run and all the back panel lights are on but zero light output from the tubes. I'm thinking the HVPS has failed. What's the best method to confirm if that is in fact the problem?
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jbmeyer13
Joined: 03 Dec 2010
Posts: 1135
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| Posted: Thu Aug 01, 2013 4:07 am Post subject: |
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Well this doesn't like too good; filthy and what the hell is the white puke?
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Thu Aug 01, 2013 5:01 am Post subject: |
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It sounds like a hv leak but then again the flyback in the hvps may have failed(I have seen that happen in tvs before)
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crt king of black
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HK-Steve
Joined: 15 Jul 2006
Posts: 849
Location: Switzerland
TV/Projector: Marquee 9500, Epson 8100
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| Posted: Fri Aug 02, 2013 7:27 am Post subject: |
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Do the basic's first, reseat the HDM and VIM.
The HV control comes from HDM and VIM.
The white is normal, not sure what it is, but every HVPS I have, has the same.
A bit dusty, but not a big problem.
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barclay66
Joined: 27 Jun 2011
Posts: 1304
Location: Germany
TV/Projector: Marquee 9500 Ultra
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| Posted: Fri Aug 02, 2013 8:57 am Post subject: |
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Hi,
I'd first check if the voltages from the LVPS are OK. Is any of the LEDs on the LVPS lit? If so, then the problem could be located somewhere else (see document attached).
Which lights on the Control Board are on? If the PJ is running and everything is ok then only the green status LED should be on (except if You're pressing a button on the remote, then the remote LED should be flashing).
On the HVPS I would check the fuse for continuity (even if it's looking good optically). Someone (You?) has replaced resistors. You may check the soldering over there...
Regards,
barclay66
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Fri Aug 02, 2013 9:15 am Post subject: |
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The vac shouldnt have affected anything, just a coincidence id say.
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jbmeyer13
Joined: 03 Dec 2010
Posts: 1135
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| Posted: Fri Aug 02, 2013 2:01 pm Post subject: |
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| HK-Steve wrote: | Do the basic's first, reseat the HDM and VIM.
The HV control comes from HDM and VIM.
The white is normal, not sure what it is, but every HVPS I have, has the same.
A bit dusty, but not a big problem. |
I cleaned the contacts on the HDM and re-seated last night and the problem is apparently resolved. While I was at it I ended up pulling out and thoroughly cleaning the FCM, HDM, HVPS and LVPS. I'd never opened my HVPS before so that white crap was alarming but Nash told me the same thing you did, even his Longbows when they were brand new had that white stuff.
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jbmeyer13
Joined: 03 Dec 2010
Posts: 1135
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| Posted: Fri Aug 02, 2013 2:06 pm Post subject: |
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| barclay66 wrote: | Hi,
I'd first check if the voltages from the LVPS are OK. Is any of the LEDs on the LVPS lit? If so, then the problem could be located somewhere else (see document attached).
Which lights on the Control Board are on? If the PJ is running and everything is ok then only the green status LED should be on (except if You're pressing a button on the remote, then the remote LED should be flashing).
On the HVPS I would check the fuse for continuity (even if it's looking good optically). Someone (You?) has replaced resistors. You may check the soldering over there...
Regards,
barclay66 |
Tim replaced the resistors on the HVPS so I'm sure his soldering connections are fine. Even though the problem has been apparently resolved I have another HVPS on the way which I plan to mod. Nash has yelled at me long enough to stock up on spare parts 
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HK-Steve
Joined: 15 Jul 2006
Posts: 849
Location: Switzerland
TV/Projector: Marquee 9500, Epson 8100
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| Posted: Fri Aug 02, 2013 3:00 pm Post subject: |
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Great it was an easy fix.
Cheers
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Fri Aug 02, 2013 6:19 pm Post subject: |
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Marquee guys are so proud that the Marquee had the best MTBF numbers back then, yet it seems every Marquee owner tend to hoard a boatload of spare parts for their machine sooner or later... why? 
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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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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Fri Aug 02, 2013 6:21 pm Post subject: |
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MArquee's downfall is weak module contacts. I'd believe that they're tied with Barco as to the mos reliable sets, but if everyone cleaned the module contacts with Caig fluid before installing, a good 30-40% of failures like this one would be eliminated.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Fri Aug 02, 2013 6:29 pm Post subject: |
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| Curt Palme wrote: | | MArquee's downfall is weak module contacts. I'd believe that they're tied with Barco as to the mos reliable sets, but if everyone cleaned the module contacts with Caig fluid before installing, a good 30-40% of failures like this one would be eliminated. |
I used Stabilant22 when I got the longbows. No failures yet that I did not cause myslef 
nashou
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Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
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Marquee Modifications and Performance Enhancement
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HK-Steve
Joined: 15 Jul 2006
Posts: 849
Location: Switzerland
TV/Projector: Marquee 9500, Epson 8100
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| Posted: Fri Aug 02, 2013 7:04 pm Post subject: |
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Now you are doomed, better knock on wood nothing happens now Nash.......
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Fri Aug 02, 2013 7:25 pm Post subject: |
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| HK-Steve wrote: | | Now you are doomed, better knock on wood nothing happens now Nash....... |
I know!! Since I am converting them to 9 inch I am sure I will screw something up. On the first one I tripled checked all connections to be sure. I did ok there so lets hope when I get time to do the second one i'll be as thorough .
Nashou
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Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
One Smart Dog!!!
Marquee High Performance Bellows now shipping!!
Marquee Modifications and Performance Enhancement
Marquee C-element and Bellow removal
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jbmeyer13
Joined: 03 Dec 2010
Posts: 1135
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| Posted: Fri Aug 02, 2013 8:06 pm Post subject: |
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| Curt Palme wrote: | | MArquee's downfall is weak module contacts. I'd believe that they're tied with Barco as to the mos reliable sets, but if everyone cleaned the module contacts with Caig fluid before installing, a good 30-40% of failures like this one would be eliminated. |
I did clean my contacts last summer when installing the blue tube you sent me. After installing my V1 case on Wed night I pulled out my porter cable and buffed out the top panel and perhaps the vibration caused the HDM to lose contact in the process. Then again it could all be a coincedence..
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Sat Aug 03, 2013 2:47 pm Post subject: |
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I own the most reliable projector on the planet. I tried to kill it to justify replacing it. Finally gave up and took it out of service fully functional 
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Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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