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SPL800
Joined: 10 Nov 2009
Posts: 164
Location: Israel
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| Posted: Tue Mar 15, 2011 9:09 am Post subject: Runco 980 Ultra replacing tubes |
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hi
i have at home 2 crt projectors from the same brand runco 980 ultra
one of them have served me well for the last 6 years and i'm planing on replacing the tube from another runco 980 ultra that i have which is not working but the tubes over there are in a very good condition.
before letting my technician do the job (he had a Training
at runco many years ago and did it before)
is there any help that you can provide before we make any mistake?
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Tue Mar 15, 2011 12:31 pm Post subject: |
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Hello
I advise turning down G2, brightness and contrast before dismantling the projector that the better tubes are going into, so not to jolt them.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Tue Mar 15, 2011 12:58 pm Post subject: |
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NO! DON'T TOUCH THE G2 CONTROLS! THey are specifically calibrated in the NEC, adjusting them will throw the whole color balance off.
I'd bleed the tubes before you put them in the new set, that's about it.
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SPL800
Joined: 10 Nov 2009
Posts: 164
Location: Israel
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| Posted: Wed Mar 16, 2011 6:23 am Post subject: |
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hi
by bleeding you mean that before i take down from the ceiling my working pj i should turn down all the brightness an contrast?
thanks
shay
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Wed Mar 16, 2011 3:59 pm Post subject: |
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Sorry no, there's a small fill screw on the metal frame of each tube, usually covered with a dab of glue. THe glycol cooling fluid can build up pressure over time, and that glue should be chipped away, and excess fluid should be drained. A tiny air bubble within the tube chamber is a good thing, that will prevent tube implosion.
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SPL800
Joined: 10 Nov 2009
Posts: 164
Location: Israel
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| Posted: Wed Mar 16, 2011 5:23 pm Post subject: |
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please can you tell me before i pay for nothing is worth to do the change
are the lens in good condition?
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SPL800
Joined: 10 Nov 2009
Posts: 164
Location: Israel
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| Posted: Wed Mar 16, 2011 5:25 pm Post subject: |
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better pic
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SPL800
Joined: 10 Nov 2009
Posts: 164
Location: Israel
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| Posted: Wed Mar 16, 2011 5:46 pm Post subject: the green tube |
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this is the green tube is it worn or can i still work with this?
the blue and the red also has this stain in the middle but i think that they are in better condition
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Wed Mar 16, 2011 6:20 pm Post subject: |
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| SPL800 wrote: | please can you tell me before i pay for nothing is worth to do the change
are the lens in good condition? |
those are the tubes, the lenses you took off with a screwdriver. No, I would not pay someone to swap those tubes into a working machine.
Those stains are burn marks, company logo or windows Icon that was left sitting and projecting for a long time. Finding nice tubes is not easy, you would have better luck finding a different machine with good tubes in it.
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TheVerge
Joined: 19 Jul 2009
Posts: 928
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| Posted: Wed Mar 16, 2011 7:48 pm Post subject: |
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My R and B tubes are pretty good shape, but my green has wear like that with multiple setups. For most movies and video it looks great, but unfortunately i like to watch soccer.
It's pretty darned annoying. Good lucking finding a green for an Xtra though.
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SPL800
Joined: 10 Nov 2009
Posts: 164
Location: Israel
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| Posted: Thu Mar 24, 2011 10:41 am Post subject: i have dicided |
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i have decided
due to the state of the tubes i'm going to replace my runco with barco 1209
so now i have at home 2 spare projectors
do you think that i can sell some parts of them or the best thing is to throw it away?
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Thu Mar 24, 2011 11:35 am Post subject: |
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Sell parts. Make money. Help others 
_________________
Tech support for nothing
CRT.
HD done right!
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