Official Mitsubishi HC5 Owners Thread - Page 23 - AVS Forum
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post #661 of 674 Old 09-12-2014, 02:14 AM - Thread Starter
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One last thing for you to test. Put an full-screen signal with 0% white (pure black). Grab a piece of paper, come up to the projector and let it project on a paper. I'm afraid the panels on your projector are degrading.
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post #662 of 674 Old 09-12-2014, 02:16 AM
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One last thing for you to test. Put an full-screen signal with 0% white (pure black). Grab a piece of paper, come up to the projector and let it project on a paper. I'm afraid the panels on your projector are degrading.
What should i see when i do this?

I am powering up the projector now.

Also what would the degrading mean?

Thanks
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post #663 of 674 Old 09-12-2014, 02:25 AM
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Quote:
Originally Posted by Elix View Post
One last thing for you to test. Put an full-screen signal with 0% white (pure black). Grab a piece of paper, come up to the projector and let it project on a paper. I'm afraid the panels on your projector are degrading.
What should i see when i do this?

I am powering up the projector now.

Also what would the degrading mean?

while testing I just used a convergence pattern and it is clear that convergence is well off too. Is there a way to fix the convergence and could that be the problem?



Thanks for your help.
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post #664 of 674 Old 09-12-2014, 02:26 AM
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When i put the paper up to the projector i get a multicoloured image. move it a few inches from the lens and it goes black.
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post #665 of 674 Old 09-12-2014, 05:19 AM
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Can anyone help fixing the convergence issues on my HC5 projector?

Googled but can't find any instructions - I am pretty sure there was a sheet in the box explaining how to do it but I am buggered if I can find it.
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post #666 of 674 Old 09-12-2014, 05:38 AM - Thread Starter
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There's an option in the menu for convergence. It's called Pixel Adjust iirc. Pick up the remote and go up close to the screen. It is very easy doing adjustments this way.
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post #667 of 674 Old 09-12-2014, 05:42 AM
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Thanks will give it a try. What did you make of my test with the white paper? Should it show multi coloured on the black screen?

Not sure why convergence has change so much since the test I did initially but it is massively out so hopefully this will fix it.
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post #668 of 674 Old 09-12-2014, 07:16 AM
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I used the pixel adjustment and I have got a bit of improvement. Unfortunately the problem is not uniform so changing one number has a positive effect on part of the screen but not on another.

I am sure there was an addendum in the box with a sheet of paper on how to do the convergence on the pj itself. It was something like hold enter when switching on but I cannot remember exactly. Has anyone got got the sheet and can enlighten me with the right button to press?
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post #669 of 674 Old 09-12-2014, 08:12 AM - Thread Starter
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You can only shift panels in 1 pixel increments. And the shift isn't necessarily uniform across the screen. So you should choose settings that show less fringing overall.

The test showed you that panels in your projector are degrading, unfortunately. The best you can do is contact the company you've bought it from. The sad fact is Mitsubishi has stopped producing projectors so I don't know if they still do support currently.
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post #670 of 674 Old 09-12-2014, 12:05 PM
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out of interest what should the test show?

Is there a repair to this kind of problem and what is the likelihood of failure as it does not effect normal viewing at the moment. Would a new bulb solve the problem?

Sorry for all the questions but I am just trying to understand the issue.
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post #671 of 674 Old 09-12-2014, 12:59 PM - Thread Starter
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This wasn't really a test. It's just a way to magnify the problem. Should be useful if you want to make a point to whomever you're going to show this. Out of interest, how much use does the projector have?

Bulb won't solve the problem, I'm afraid. Only replacing the panels (or the whole optical path).
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post #672 of 674 Old 09-12-2014, 01:42 PM
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Quote:
Originally Posted by Elix View Post
This wasn't really a test. It's just a way to magnify the problem. Should be useful if you want to make a point to whomever you're going to show this. Out of interest, how much use does the projector have?

Bulb won't solve the problem, I'm afraid. Only replacing the panels (or the whole optical path).
just short of 800 hrs use. It was an ebay so unlikely to get recourse.

what should the test show in case seller wants an explanation?

is there other possible reasons?

Also have you got the manual which explains the convergence reset you can do on power up or have i imagined it?
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post #673 of 674 Old 09-14-2014, 01:22 PM
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Anyone else help with this issue?

In particular the questions i can't get an answer to in regards the convergence reset on the hc5 ( i am sure there was a sheet in the box explaining how to do this with a few button presses) and also what the paper in front of the black screen on the projector should show.

I am planning emailing the ebay seller who i go ti t from tomorrow so any advise and help would be greatly appreciated. Any idea how much a repair might cost for the degrading panels etc..
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post #674 of 674 Old Today, 08:13 AM
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Hi, i noticed a "strange" behauvior on my HC5 when i calibrated the VPR...setting red values at lowers IRE at 0 makes black parts of the picture to have a lot of sparkling red dots

Dots desappears completely if red values are 1 ore more

Probably it doesn't "understand" a value of 0

Just to report it if somebody has the same problem
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