Is this definitely the bulb on projector?

GinG

GinG

GinG

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Joined
22 Jul 2006
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Hi All,

I have inherited a Panasonic PT-AX200e projector after my grandad sadly passed away last week. I know it was due a replacement bulb as the last one was a Chinese import, however I just want to check it is actually the bulb and nothing else. You can see in the pic below the dark circle in the middle.

Cheers

 
Thanks Guys.

When playing a movie that area actually has a yellow tinge. Maybe could have been a faulty bulb from the off?
 
Hi Lucid,

Thank you very much, very interesting post and will give it a try.

If I remember correctly before the cheap bulb was put in all was fine, as soon as this bulb was fitted this 'halo' appeared. Unfortunately I wasn't the one who fitted and by the time I noticed was too late to return the bulb.

Will run a few tests and see what happens.

Cheers
 
I know not the best quality but I think you can see the spot in all the colours, think I will get a new bulb just to rule this out before it goes to the tip if it does indeed prove to be anything more sinister.



 
lucid said:
If you have a laptop with HDMI out, then sure. Have you got a laptop with HDMI out?

Can you?

I know I'm only looking the pictures you posted whereas you're there with the actual projector; but to me it seemed from the first blob image that it covered 3/4 of the width of the screen. If that's the case, then I'd expect the blob to be in the same space as the green bar in your test pattern. From what I can see though, the green bar seems unaffected.

Where the blob is seen is in blue, and in white. Remember, white is made up of red, green and blue light. So any problem on the blue panel would show on the blue bar and the white bar but not the green or the red. That seems to be exactly what your pattern shows.... and it's what I predicted.
Click to expand...

It may be just my eyes making up the fact I can see the slight tinge in the other colours...looking again at the pictures your right it just looks like the blue is affected.

I can focus the lens no problem as you said in the previous post so possibly could be death of the projector, just strange how it happened as soon as the bulb was changed however.
 
Well lucid, took the projector apart and your correct, as seen below you can clearly see the burn on the blue polariser.



Going to have a read up on the web about the replacement but what a shame! Does this just happen with age??
 
You do seem to be the angel of doom here!

I think its more nostalgic rather than anything and appreciate the fact it is a 720p, if there was any cheap hack to fix it I would hae done this for the time being.

It may be I can use this to my advantage to twist the wifes arm to allow me to even just go second hand off AV forums...I am sure that is what my Grandad would have wanted!! :D
 
Would a Optoma HD65 be a good cheap alternative? One up for sale for £150...probabally offer a cheeky £120. Has 533 hours usage.
 
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