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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Sat Mar 15, 2008 3:35 pm Post subject: |
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this could be a bad op amp on your vim for that board, also what type of vim are you using? on the older boards there is a resistor that goes to the SD5401 chip, check the connection at both ends of that resistor. on the newer boards thier may be a resistor going to the op amp( first op amp's) check to make sure that has a good conection. Also try swaping neck boards.
Athanasios
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voodoo7869
Joined: 19 Oct 2007
Posts: 193
Location: Chicago, IL USA
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| Posted: Sat Mar 15, 2008 4:55 pm Post subject: |
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ok I have tried swapping neck boards and no luck there I have also tried multiple vims. and no luck the raster is lit on blue only and you can see interferance on all 3 tubes when the brightness is high. you can see it on blue all the time the raster is also wavy on the sides. and unstable. I will try to get a pic of it to post.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Sat Mar 15, 2008 7:39 pm Post subject: |
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Have you tried the HVPS? if you have an extra swap it out. also i wonder if its the convergence circuit? put up a full white field and then, Unplug the green convergence coil (NOT vertical deflection!) from the amp on back heatsink and see what happens. TSE told me about this for another problem and it might narrow it down.
Athanasios
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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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the_avguy
Joined: 16 Mar 2007
Posts: 91
Location: Edmonton, Alberta
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| Posted: Fri Mar 21, 2008 6:54 am Post subject: |
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| voodoo7869 wrote: | ok found the problem thanks curt it was the clm. no i have another problem the raster is lit constantly no matter what i do I have the g2 at zero and drive at zero with brightness and contrast at zero and raster is lit and unstable. any ideas where to start? that is the last problem i have then i can setup the pj.
All help is appreciated.
John |
Hi voodoo7869,
I just noticed that you said earlier that you had swapped out the CLM, was it bad as well?
Have you managed to fix your new problem yet?
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voodoo7869
Joined: 19 Oct 2007
Posts: 193
Location: Chicago, IL USA
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| Posted: Fri Mar 21, 2008 6:17 pm Post subject: |
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I had 2 bad boards the clm and the vim. I also had contamination in the electron gun that is also cleared up I will have some pics up soon.
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Fri Mar 21, 2008 7:06 pm Post subject: |
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Hello
What model Marquee?
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voodoo7869
Joined: 19 Oct 2007
Posts: 193
Location: Chicago, IL USA
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| Posted: Fri Mar 21, 2008 7:22 pm Post subject: |
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it is a 9500lc why?
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the_avguy
Joined: 16 Mar 2007
Posts: 91
Location: Edmonton, Alberta
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| Posted: Fri Mar 21, 2008 8:00 pm Post subject: |
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| voodoo7869 wrote: | | I had 2 bad boards the clm and the vim. I also had contamination in the electron gun that is also cleared up I will have some pics up soon. |
Thanks for the update.
When you replaced the clm did the h fail go away?
So then only the v fail was lit?
What was happening because of the contamination in the gun?
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voodoo7869
Joined: 19 Oct 2007
Posts: 193
Location: Chicago, IL USA
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| Posted: Sat Mar 22, 2008 6:27 am Post subject: |
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what had happened is the vim got zapped by high voltage arcing witch also nailed the clm. they are bolth toast.
when i got it fired up the raster on one of the tubes remained lit with everything turned down. it was contamination in the tubes from being moved around. i have gotten that taken care of as well. while the projector was on i turned the g2 up pretty high and tapped on the metal housing with a hammer not hard just enough to jar the tube. ( NOT ON THE GLASS )
I heard a loud snap from high voltage and the tube was back to normal. all is well now though
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the_avguy
Joined: 16 Mar 2007
Posts: 91
Location: Edmonton, Alberta
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| Posted: Sat Mar 22, 2008 6:43 am Post subject: |
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| voodoo7869 wrote: | what had happened is the vim got zapped by high voltage arcing witch also nailed the clm. they are bolth toast.
when i got it fired up the raster on one of the tubes remained lit with everything turned down. it was contamination in the tubes from being moved around. i have gotten that taken care of as well. while the projector was on i turned the g2 up pretty high and tapped on the metal housing with a hammer not hard just enough to jar the tube. ( NOT ON THE GLASS )
I heard a loud snap from high voltage and the tube was back to normal. all is well now though |
Hmm,
So did you just replace the CLM first and then the H Fail went away?
Or did you have to replace both boards for anything to happen?
Your problem is sounding alot like my problem. I think I did the same thing.
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marquee still in pieces, just gathering knowledge.
optoma ep729
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voodoo7869
Joined: 19 Oct 2007
Posts: 193
Location: Chicago, IL USA
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| Posted: Sat Mar 22, 2008 6:47 am Post subject: |
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i had to replace bolth for the problem to go away now with fully working set if i swap in one board at a time i get the failure imediately
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the_avguy
Joined: 16 Mar 2007
Posts: 91
Location: Edmonton, Alberta
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| Posted: Sat Mar 22, 2008 6:52 am Post subject: |
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| voodoo7869 wrote: | | i had to replace bolth for the problem to go away now with fully working set if i swap in one board at a time i get the failure imediately |
You mean if you just swap in one of the bad boards you get H Fail AND V Fail lights right away?
That is going to make it hard to diagnose for me as I don't have a whole set of spare boards.
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optoma ep729
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voodoo7869
Joined: 19 Oct 2007
Posts: 193
Location: Chicago, IL USA
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| Posted: Sat Mar 22, 2008 7:06 am Post subject: |
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try the vim first if no joy then try the clm if still no joy do bolth
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the_avguy
Joined: 16 Mar 2007
Posts: 91
Location: Edmonton, Alberta
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| Posted: Sat Mar 22, 2008 3:14 pm Post subject: |
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| voodoo7869 wrote: | | try the vim first if no joy then try the clm if still no joy do bolth |
Oh sure, the vim is the board I won't have.
Oh well I will try what I can and hope for the best.
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voodoo7869
Joined: 19 Oct 2007
Posts: 193
Location: Chicago, IL USA
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| Posted: Mon Mar 24, 2008 5:50 am Post subject: |
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I have an older board that is known working that i can send you if you like it is an 8000 board but will work just for a test.
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the_avguy
Joined: 16 Mar 2007
Posts: 91
Location: Edmonton, Alberta
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| Posted: Mon Mar 24, 2008 6:12 am Post subject: |
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| voodoo7869 wrote: | | I have an older board that is known working that i can send you if you like it is an 8000 board but will work just for a test. |
My machine is an 8000 so that would work great.
I sent you a pm.
thanks
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voodoo7869
Joined: 19 Oct 2007
Posts: 193
Location: Chicago, IL USA
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| Posted: Mon Mar 24, 2008 11:20 am Post subject: |
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well thats perfect then you should have no problem with this board at all. i sent you a pm
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