[Rohan]

How do I take off the big black barrels that cover the CRTs? There is so much stuff in the projector I can't get a screw driver to the bottom screws.


I'm afraid if I touch anything I will zap and kill myself.


I'm trying to take them off and clean them up so I can get better focus.


What should I clean the lenses with?


Any help is much appreciated.

 

[matrix]

Doug, Go to the Sears store and pick up a 15" "2 phillips screw driver. You can get the lenses off without taking any of the power supply units off. As far as getting a poke, if the pj is un plugged you are safe in this area of the pj. The lenses have four screws, one in each corner. I forgot to add when you are at Sears, go the the optical department and pick up a bottle of eyeglass cleaner safe for coated lenses. Use an old undershirt with the cleaner and gently wipe the lenses after spraying the cleaner on.

 

[Rohan]

15" "2 screw driver? what is that?


15" long?


what does the "2 represent?

 

[Chuchuf]

He means a 15" long phillips screwdiver that will fit on the philips screws that hold the lens assy on the projector.


Terry

 

[fs123]

I went to Sears last week and bought a 16" #2 phillips head screwdriver which is perfect for the sony 12xx. The #2 is the size of the phillips head.

It cost about 13 dollars, here is the item number 00941752000 check their online site.

 

[Brian Hampton]

Hey,


I use a long phillips as well to remove the lenses. Be extra carefull because the tip of this screwdriver is far from you hand. You have to be carefull to not make contact of this tip with the lenses. If you're not used to such an ackward tool and even if you are it's still easy when going from one screw to another or one lens assembly to another to bump the tip into the lenses. I've never actually done it but I have to be very carefull each time.


Good Luck,


Brian

 

[CH Yeow]

Do you want to dismantle the lens element inside the barrel? Or just remove the whole lens out of the CRT surface?


I wanted to try the first one. It has fungus and specks of dust trapped inside the elements.


CH Yeow

 

[David1]

Doug,

I know that a lot of people have said this can de done without removing the power supply and having done it both ways. If you projector is floor mounted, there is no question take out the power supply!!! The difference is night and day and from your questions it seems as if you are new to this. This won't be the last time you take them off, unless you are very organized. I have had my power supply sitting on the floor in front of my projector for the last week. It has been no problem and makes the job much easier, the green and red are a snap, but the bottom blue screw can be a pain. Go at it from the side.

David

 

[Rohan]

What about those dangerous looking fat cables on next to the blue lense? Aren't those capacitors capable of zapping the **** out of me?


How do I safely disconnect the wires that are attached to the power supply?

 

[Brian Hampton]

Hey,


Cables are not capacitors ( at least not very good ones.)


YOu don't need to disconnect the power supply if you are using a long screwdriver.


Just remove the front bezel and then remove the lenses themselves.


But, be carefull, the price of a new lens is over a thousand dollars and I'm not sure that comes with the coating. Much care is needed in this area.


-B

 

[Rohan]

Call me stupid, but these thick insulated cables are connected to a black box. Looks dangerous to a newbie. I'm sure as soon as I disconnect it, it will short out through my hand. I have no idea how to discharge a projector.

 

[stefuel]

Unplug the unit from the wall. Let it sit for 30 minutes. Any residual voltage should have bled off by then.


Chip S.

 

[Rohan]

Curt or any other techie -- can you verify this?

 

[BradS]

If your crt is on the floor or table then I would just slide out the PS and HV block. You do not need to unplug the leads to the HV block (black box) or any other connectors. Remove the PS block directly under the lens by loosening one screw on each side. Slide the PS block out carefully. You will have to support it. Loosen the two screws that hold the HV block in place and slide it out and support it. Now it is very easy to remove the four screws that hold each lens.


With the unit unpluged for 30 minutes or longer you will not get poked on this end of the projector.

 

[Demunita]

If your worried about getting a boot from the projector leave it pluged in with the power at the socket switched off this way the chassiss of the projector is still earthed. I dont think crt's in projectors carry charge for very long but i have heard of direct view tv's CRT's holding charge for days !!

 

[David1]

I have not had to remove the high voltage , you can just sit the ps in front and not worry about the high voltage. Just go at the blue left botom screw from the side, just carefuly bend the plastic shield nd you should be able to get in there. But if you are smart you would read guy's focus thread and think about crt centering when the lens are off. It much easier to find the center this way.

what do the rest of you old timers think ?

 

[Brian Hampton]

Hey,


I've done the lens removal two ways..


1) Remove the power supply as described in the manual.


2) Use a long screwdriver and remove only the lenses directly.


I really prefer the second option. It's easier and easy is good. Out of the maybe 5 times I've done this I was only killed once. (just kidding) High Voltage isn't a laughing matter but the real danger lies in things further back like astigmatism, centering and deflection. If you already have the long screwdriver I woudn't recommend removing the power supply. Mainly since there's a ton of little wires connected to it that you have to juggle.


Good Luck,


Brian