CurtPalme.com Home Theater Forum

[CasetheCorvetteman]

Gday people, my NEC 9PG finally turned up today, im just in the process of taking the lenses off (only got the blue off so far, but i cant even see any wear at all on it, apparently done 5,000 hrs, buggered if i can see 5,000 hrs of wear here...)

With this blue off now, i cant see any bubble in the glycol, and ive heard there should be on non LC tubes, (my Sony VPH-1001QM has the bubbles) I also cant see where i would drain some glycol out yet, do i have to remove the tubes for this?

How important is it that i have a bubble in there? Did they have a bubble there from the factory? I dont see anything about it in the instructions which is why i ask.

Thanks in advance people

[Mark_A_W]

You have to remove the tubes.

Pick out the silicone, and remove a tiny grubscrew - there are two holes.

Watch the glycol fly!!

And then push a bubble in with a syringe + needle.

Kai made a guide, it's in the Tech section.


Do it, or you will regret it later.

[CasetheCorvetteman]

Sh**. So that bit of white silastic on the bottom of the tubes is where i need to get to eh? That sounds like alot of hard work, but there is no way in hell i want to risk damage to such perfect looking tubes.

Thanks mate, apreciate your reply

[kschmit2]

Do it, I just had a green tube with cracked front glass. It was sitting on a shelf, so fortunately no further damage was done.
Currently trying to source a replacement front glass

It's a major PITA to get the glass off, while bleeding the tubes is a really quick affair. I was just too lazy.

I have now gone through all of the tubes on my shelf again, and it took only about an hour total.

Kai

[CasetheCorvetteman]

No worries mate, im going to have a ganda in the tech section and see if i can find this info i need, then ill have a beer, and then see about getting to it

[kschmit2]

the info you need is here:

http://www.curtpalme.com/Bleeding_CRT_Tubes1.shtm

[CasetheCorvetteman]

Thanks mate

[CasetheCorvetteman]

Ok, im into it, got the blue tube done, could only get one screw out, didnt want to force the other one. Got the bubble about 17/32s - 9/16ths round when holding the tube upright, so that should be good i hope. Sealed it back up with Permatex Ultra Grey RTV.

[CasetheCorvetteman]

All done, all back together.

What settings do you all recomend i set all the settings to before i do the mechanical setup? I read the tips section but it says zero them, but dont zero this, then set the other to 100.

What do i set to what?

[CasetheCorvetteman]

So after 3 months, give or take a few days, i looked into the lenses on the PG last night, could only see bubbles in the blue and green, and very small ones at that, so i took the lens off the red. No bubble visible (i looked a few weeks ago and there was a small one in there)

So its back to bleeding again....

[Mark_A_W]

It'll be alright.

The pressure has been relieved - it will take years to build up again...at least it would down here in fireland.

[CasetheCorvetteman]

Yeah no worries Mark, i wont be using it for a while, so it wont get done for a while. Gotta build the house to put it in yet eh