Post by Casethecorvetteman on Mar 3, 2019 8:48:31 GMT -5
Ive had this Infocus IN34 DLP here for a fair while, the colour reproduction on it is terrible, and the unit now turns off after a few minutes with the lamp light flashing.
Im not sure if the lamp is rooted or not, because it has always been terrible colour since ive had it, got it free partly due to that reason.
No idea how many hours its done because it had been reset at some point, but apparently the bulb was not replaced at the time this was done, it was reset to stop an error or message allegedly...
Would the colour be that bad on one of these DLPs with a buggered lamp or is this another issue?? The colour is quite badly washed out, and it doesnt seem to matter how you adjust it, you cant get it really good at all. Ive got an Epson EMP S5 LCD that is significantly better in terms of colour, so i know its not just a digital thing...
Id like to fix it, because if nothing else it does incredibly good 3D using the nVIDIA glasses.
Your washed out color problem is most likely that light tunnel missing. I would think there is so much light spray that it is passing through the color wheel all over the place.
lamp error could be just that but hard to tell without testing with a known good lamp. If you can see the ballast you may want to see if it has a spark gap on it. If it does you can see if it is firing when it attempts to light the lamp.
Post by Casethecorvetteman on Mar 3, 2019 12:58:30 GMT -5
Hey goin ok mate yeah, getting there, been a bit of a rough trot but all slowly coming good.
Ive just spent the past hour with this thing apart and cleaned a number of lens pieces, as well as the colour wheel which was covered in some sort of build up, and that has improved the colour uniformity.
Ive also got a new lamp coming. The lamp that is in there doesnt look that old, its pretty clean and seems ok, which doesnt mean much at all.
Funny thing is though at the moment it is running ok and hasnt stopped, but that is not to say it will keep doing that.
Boy, without a schematic I really don't know. If you open it up see what type of ballast it uses and if there are any labels on it with numbers.
Id say at a guess it is completely electronic as far as the ballast goes, i cant see much in there at all, it is very minimal!!
What strikes me as odd though is i can turn that rig on and leave it on the Infocus splash screen or run through menus and do what ever i want and it will run for at least 2 hours without a hitch, but the second i connect that HD Fury 4 to it, itll look at shutting off within a minute or so.
I havent tried another source yet to see if its a source issue, but it sure seems odd to me that itll run so well with no source at all.
Post by mastertech on Mar 19, 2019 10:39:27 GMT -5
Well if I had to assume anything I see that the Fury was sending a 16:9 ratio signal and the PC is sending a 4:3 ratio signal. I see you projector is a native 4:3. So any signal that is sent to it other then 1024X768 will get scaled by the internal scaler to the native panel. I checked your user manual and the projector will except and scale a 16:9 signal but there is a selection in the menu for the 16:9 or 4:3. But even if you had selected the 16:9 aspect the scaler may still not like the 1280x720. If your PC can do it I would try sending it the same 1280x720 that the fury was sending and see if it shuts down again.
With that said, digitals are not like CRT projectors. With a digital you should always try to send it a signal as close to the native resolution as you can so the scaler does not have to work so hard to convert it. Crt's don't have to scale to produce an image.
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