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chillman
Joined: 09 Apr 2007
Posts: 134
Location: Germany, Bavaria
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| Posted: Mon Apr 19, 2010 10:05 pm Post subject: Marquee: no picture |
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Hi,
I have bought a Marquee 9500LC to replace my Ampro 3600.
I can not get a picture out of it at all, no visible raster, no menues, nothing.
I changed the fans in the LVPS and also the other three, before that, the set was working.
Also, I used 12V standby voltage to run one of the bigger fans.
Besides not displaying a picture, the set runs normal, no error codes, no LEDs lit on the LVPS.
It is not in standby mode.
Any help would be appreciated.
Greetings,
Tillman
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Mon Apr 19, 2010 10:36 pm Post subject: |
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Hello
The lvps fans have to be capable of 12 to 24 volt operation.
.
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chillman
Joined: 09 Apr 2007
Posts: 134
Location: Germany, Bavaria
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| Posted: Mon Apr 19, 2010 10:37 pm Post subject: |
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The problem is that the bearings of the stock fans are completely worn out and loud as hell.
The set powers on normally, it's only that there is no picture. Can this really be caused by the fans?
Greetings
EDIT: I know that the stock fans are 24V, I put the new 12V fans in series in the LVPS. They are running at 6V (when powered off) too.
EDIT 2: I just realized that the HVPS isn't starting, there is no crackling sound.
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Sparky015
Joined: 12 May 2009
Posts: 1185
Location: Cleveland / Akron, OH
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| Posted: Tue Apr 20, 2010 12:12 am Post subject: |
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Something is keeping your HVPS from kicking on (unless it's bad). Have you checked your connections since putting it back together? The marquee has a circuit that does not allow the HVPS to start if it doesn't sense things are correct. What was touched between the time it was working to now? I believe you have to dismantle the set practically to get to the belly fans.
_________________
~Paul
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JustGreg
Joined: 07 Mar 2006
Posts: 3098
Location: Kenosha, WI
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| Posted: Tue Apr 20, 2010 7:53 am Post subject: |
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| Sparky015 wrote: | | Something is keeping your HVPS from kicking on (unless it's bad). Have you checked your connections since putting it back together? The marquee has a circuit that does not allow the HVPS to start if it doesn't sense things are correct. What was touched between the time it was working to now? I believe you have to dismantle the set practically to get to the belly fans. |
Yup. Sure do. And if it's already ceiling mounted...huge bummer. 
Can you pick up another belly fan assembly locally and go back to square one and see if the problem elsewhere? I don't see as how you have much choice except to undo what you've done and start over.
_________________
Greg
"Is it ignorance or apathy? Hey, I don't know and I don't care!" --Jimmy Buffett
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chillman
Joined: 09 Apr 2007
Posts: 134
Location: Germany, Bavaria
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| Posted: Tue Apr 20, 2010 8:24 am Post subject: |
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I had only removed the bottom plate to get to the fans, nothing touched in the inside. (you can change the belly fans even without doing that btw)
I will try going back to the old fans, and also to reseat the modules in the inside in case something got loose while lifting the projector to the ceiling.
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chillman
Joined: 09 Apr 2007
Posts: 134
Location: Germany, Bavaria
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| Posted: Tue Apr 20, 2010 9:16 am Post subject: |
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Ok I tried the above, didn't help.
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Tue Apr 20, 2010 1:38 pm Post subject: |
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with just the power connected do you have a stby led lit on the clm.
2nd led from the left when table mounted.
_________________
1 answer always poses multiple questions.
marquee 9500ultra HD10L moome hdmi1.3 v3+ some mods.
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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: Tue Apr 20, 2010 2:21 pm Post subject: |
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Check the connectors under the red tube, the control wire to the HVPS is located there. A bad connection on it will kill the pix.
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Tue Apr 20, 2010 2:30 pm Post subject: |
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have you pulled p14 to replace the fans.
under the blue tube.
do the tubes glow when powered on. (backside of the tube)
_________________
1 answer always poses multiple questions.
marquee 9500ultra HD10L moome hdmi1.3 v3+ some mods.
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chillman
Joined: 09 Apr 2007
Posts: 134
Location: Germany, Bavaria
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| Posted: Tue Apr 20, 2010 3:56 pm Post subject: |
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| dvh99 wrote: | with just the power connected do you have a stby led lit on the clm.
2nd led from the left when table mounted. |
Yes.
| dvh99 wrote: | have you pulled p14 to replace the fans.
under the blue tube.
do the tubes glow when powered on. (backside of the tube) |
No, I didn't pull P14. Filaments are heated properly with 6.35V.
| Curt Palme wrote: | | Check the connectors under the red tube, the control wire to the HVPS is located there. A bad connection on it will kill the pix. |
I pulled the connector and reconnected it, didn't help.
What I forgot to mention: I had also tried to power a HDFury using 5V standby voltage, which led to the set shutting down/not powering uo correctly. Maybe I fried something doing that?
Thanks for your help,
Tillman
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Tue Apr 20, 2010 4:17 pm Post subject: |
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have you disconnected all sources and the hdfury.
_________________
1 answer always poses multiple questions.
marquee 9500ultra HD10L moome hdmi1.3 v3+ some mods.
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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: Tue Apr 20, 2010 4:19 pm Post subject: |
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| chillman wrote: |
What I forgot to mention: I had also tried to power a HDFury using 5V standby voltage, which led to the set shutting down/not powering uo correctly. Maybe I fried something doing that?
Tillman |
That could be, the VIM could be bad. Where did you get the standby voltage from? The RS232 connector on the back? If so, you could have fried anything, the standby voltage in the set is not designed to power the Fury that can use over 1/2 amp of current. The CLM could also be bad, same with the LVPS...
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Sparky015
Joined: 12 May 2009
Posts: 1185
Location: Cleveland / Akron, OH
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| Posted: Tue Apr 20, 2010 4:37 pm Post subject: |
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Curt, isn't there a circuit in the LVPS that monitors current draw? The HDFury might be exceeding that, causing the over-current trigger. I would think that would light an error light on the LVPS though.
Have you removed your HD Fury 5V modification to see if that restores operation? Not sure if you've done what Greg suggests, and remove everything you did and start from scratch. You have to get it back to scratch before you can start to pinpoint a failure mode.
_________________
~Paul
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chillman
Joined: 09 Apr 2007
Posts: 134
Location: Germany, Bavaria
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| Posted: Tue Apr 20, 2010 4:41 pm Post subject: |
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No, I didn't used the RS232 port. At first I tried to get it directly from the connector of the VIM (not sure if that's really 5V standby). Since that didn't work, I grabbed 5V standby directly from the LVPS. Seems like that was a bad idea.
Would a defective VIM prevent the HVPS from starting? The LVPS still outputs the 5V stby correctly.
@dvh99: Yes i removed the Fury. I tried with and without source.
@sparky: Yes i removed the modification. I also put the old belly fans back in.
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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: Tue Apr 20, 2010 4:51 pm Post subject: |
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Well there's your problem for sure. Bad VIM, bad CLM or bad LVPS. Without swapping them, there's no way of telling which one it is.
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chillman
Joined: 09 Apr 2007
Posts: 134
Location: Germany, Bavaria
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| Posted: Tue Apr 20, 2010 5:08 pm Post subject: |
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Alright then, thank you very much for your help.
I'll see if I can find spare parts.
Greetings,
Tillman
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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: Tue Apr 20, 2010 5:11 pm Post subject: |
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I can repair yours if you can't find them. Sending the CLM and VIM should be cheap from Germany to me.
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chillman
Joined: 09 Apr 2007
Posts: 134
Location: Germany, Bavaria
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| Posted: Tue May 04, 2010 8:07 pm Post subject: |
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If anyone is interested, this is how the story ended:
I got a spare VIM an CLM from a very kind member of the german HT forum for testing.
Both didn't change anything. I then took a closer look at the LVPS and HVPS, and found the fuse
in the HVPS to be blown. When I replaced that fuse, it would blow again as soon as I plugged the
LVPS in (PJ not powered on!). I interpreted this as the LVPS being broken on the 390V rail or something like
that.
As I couldn't find a spare LVPS, I simply bought a whole 8500 as a spare parts donor. 
Today it arrived, and of course I couldn't wait to test the new LVPS.
But the fuse in the HVPS would still blow as soon as power was connected!
So I was sure that the problem was caused by the HVPS.
Changed the HVPS, put in the old LVPS, plugged in power and....
All the LEDs on the LVPS were blinking randomly as soon as power was connected! (no blown fuse however)
I was ready to drop the PJ out of the window...
Reseating LVPS and HVPS cured that problem however. Marquee is running again!
So I guess the whole problem probably wasn't related to my modding at all.
Thank you for your support!
Greetings,
Tillman
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