CurtPalme.com Home Theater Forum

vespaman · Joined: 15 Jan 2008 Posts: 31 Location: Stockholm

A few years back, I got hold of some GT17 lenses, with a lot of dust on their lenses - both outside and inside, which I substituted with the stock lenses on my 9500LC after cleaning them outside.
Well, while I am not sure that there will be any noticable difference, should they have been clean, but I find that I don't enjoy seeing all that dust on the inside while looking at the projector when it is running...

So, the other day, after I installed my new Moome hdmi 1.3 card into the set, I was thinking about a serious cleaning of the lenses by taking them apart.

But maybe this needs special tools, of some sort. If not, is there something to stop me from having a go at it?
Someone done this op? (I'm sure some of you must have done this! Very Happy

)

Cheers,
Micael

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

I started to, i took off the bottom lens and think i am going to try to swap it with a HD10L or HD10 lens and see what happens, it might focus it might not. but here is my post on it.

http://www.curtpalme.com/forum/viewtopic.php?p=174280#174280

You do mess up the soft aluminum doing it though.

Athanasios

1031 · Joined: 22 Mar 2006 Posts: 657 Location: Finland

I have opened those lenses (plain hd-10´s) Front and rear lenses are quite easy, there is big ring around lense that has thread´s on it. there is place for tools so you can turn that ring and open lense. Those ring´s are usually quite tight so i heated outer barrel little with hairdryer and sprayed coolspray to that ring part.Then with big flathead srewdriver and small hammer i started to tap those open...It would be easy if someone helps to hold that barrel while tapping that ring open, also if someone taps opposite side of ring same time. First half turn is hardest part after then its easy.. But if dust is between front lenses then try open those "guide screws" that are on those grooves that move lensebarrel. those are usually locked with "locktite" so little heat helps to open those. After that it´s easy to pull front barrel out.
Hammer & screwdriver & hd-lenses-> be carefull Mr. Green

Edit: Joust had special tool for removing those "guide screws" ->
http://www.curtpalme.com/docs/HD144_lens_adapter_kit_MKII_Instructions.pdf

stefuel · Posted: Sun Mar 08, 2009 2:45 pm Post subject:

While I suppose there is some chance of dust getting in between the front and back half of the lens assembly, there should be no reason to seporate the front or rear lens packs. I have completely dissassembled lenses before and trust me when I say "you don't want to do it". If I were you, I would go no further than removing the front barrel from the rear and only clean that area. Unless you have a "clean room" you will probably do more harm then good.

vespaman · Joined: 15 Jan 2008 Posts: 31 Location: Stockholm

OK, thanks Guys! I guess I will mostly do the basic stuff to my GT17's, but I'll inspect the lenses more thourogh to see where that dust/durt/smoke is is actually located, and concentrate on that particular area.

I have my old HD10L to practice on.. Smile

Is there any exploded views on HD10 floating around?

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

there is a document in the all about lens thread that has a diagram that would be similar to how a lens is put together, i think there may be close to 10 elements in the HD10's but this is just a guess.

Athanasios

**AnalogRocks** · Posted: Sun Mar 08, 2009 6:46 pm Post subject:

vespaman · Joined: 15 Jan 2008 Posts: 31 Location: Stockholm

10 elements! Hehe. Silly me, I thought it would be something like 4... Smile

I'll be careful for sure!

Tom.W · Joined: 09 Mar 2006 Posts: 6635

Nice lens spanner wrench but I hope you know what your doing !

http://www.calumetphoto.com/item/ES1000/?t=GB01&a=CA01&CAWELAID=36796370

The spacing of the elements is also critical Wink

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

Tom.W · Joined: 09 Mar 2006 Posts: 6635

You can find a better price but you get what you pay for...

http://www.shopping.com/xGS-Lens_Spanner~NS-1~linkin_id-8000680

One slip with the wrench and possibly a nasty scratch on the element.

Second thought don't even go there ! Shocked

Way to easy to screw up !

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

this looks like a nice set and not to expensive:

http://www.skgrimes.com/span/index.htm

But after taking the bottom lens off on the HD10GT 17 there is no way you can do it with that and hand strength alone. maybe start with a hammer and driver then move to the spanner wrench.

Athanasios

Tom.W · Joined: 09 Mar 2006 Posts: 6635