Hitachi TX100 dust blob guide

[cyberheater]

Right lads.

I've just managed to remove some really annoying dust blobs from my project and the image looks a lot clearer to boot.

I'll post the guide and piccies tomorrow cause it's getting late now and I need my beauty sleep

Warning now. This will not be for the faint hearted. It requires removal of the main circuit board and lens assembly block.

My PJ is out of warranty so I took the risk.

[cyberheater]

Okay. This is a warning. Don't attempt this unless you feel that your fairly competent with electrical stuff and have a good record of taken stuff apart and putting it back together in one piece. Although nothing in this guide is technical par se, there are a lot of fiddly interconnects that need to be removed and replaced accurately.

Normal safety precautions should be taken and the PJ mains cable should be removed and the bulb allowed to cool.

You'll need 1 can of clean compressed air (with tube). 1 philips screw driver. And patience (about a hour).

I wish you luck.

Set up a well lit area clear of stuff to allow you to work. I also tend to set aside small cups to keep all the screws that you remove.

Here the is the beast with it's cloths on.

Remove the bulb, remove all the screws from the bottom (4 normal black screws and 1 long silver one) and the two top screws from the rear of the unit.
Carefully remove the top shell. This is tricky and can take a while. Just be careful.

You need to remove the circuit board now. This is not for timid. Carefully remove all the edge connectors and the three ribbon cables that come up from the bottom of the board. These are held in by a pressure grip connector. Just slide the black tabs back the ribbon cables will come free.
There is also a connector (power?) on the bottom of the board that you need to be aware of. Remove the screws holding the board on. Also remove the remaining screws on the back of the unit where the connectors are as the video connector panel and board are one piece. Lift the board/video connector panel and remove the power connector on the bottom of the board.

You'll find some plastic poppers on the top black cover. Carefully remove those and lift the top cover off exposing the lcd panels and colour filters.

Now remove the 2 screws that hold the projector lens assembly in place. You also need to remove the 2 screws that hold a lens shroud cover near the front of the lens.
You should now be able to remove the complete lens/lcd panel assembly.

Give everything a good squirt with your can of compressed air.

And reassemble as quickly as possible to prevent dust contamination.

[wandgrudd]

A+++++++++++++

well done must save this for the future.

wandgrudd

[PJTX100]

I'm naked!!

Hero.

[PJTX100]

I'm presuming removing the bulb didn't give any improved access to the optics?...PJ

[Kopite4Ever]

brave very brave, here's hoping i dont get any dust blobs ever

[cyberheater]

Originally Posted by PJTX100

I'm presuming removing the bulb didn't give any improved access to the optics?...PJ

No. It's seems pretty sealed from that end.

In fact. The whole thing is pretty well sealed. It's a mystery how the dust got in there in the first place.
Let's hope I never have to do that again.

[Kopite4Ever]

ive been trying to get the case off mine for like an hour, i think those pics are fabricated it just is not possible

seriously whats the trick to it before i get out the hammer

[PJTX100]

Ply it with drink and whisper sweet nothings.

[Kopite4Ever]

if i wernt so stressed atm id laugh

[cyberheater]

Originally Posted by Kopite4Ever

ive been trying to get the case off mine for like an hour, i think those pics are fabricated it just is not possible

seriously whats the trick to it before i get out the hammer

Make sure all screws are out and then you need to sort of unclip the front bit under the lens.

[whats_this]

cyberheater your inbox is full, been trying to get hold of you to find out about your success with the filter. any updates?

[Kopite4Ever]

ive done it with assistance from uncle....what aload of hassle it wasnt easy

[cyberheater]

Originally Posted by whats_this

cyberheater your inbox is full, been trying to get hold of you to find out about your success with the filter. any updates?

Yes mate. I've updated the thread.

Sorry guys for not getting back sooner. Something to do with me being busy with a 1 week old baby

[whats_this]

congratulations mate (and good luck).