CurtPalme.com Home Theater Forum

stefuel

I hate using the universal connector for the P19 tubes, especially when they are still in the projector and you cant see the pins to hook on to. I robbed a socket off of a old neck board and trimmed off all the un-needed garbage I'm soldering on three foot leads so that the connections can be made outside the projector. Now the question is, according to the pin-out for those tubes, G1 is on pins 5,11 and 12. Does it make any difference which one I use? I tied pins 2 and 6 together so the adapter would work for 07's and 09's. Thanks,

r.bauer · Joined: 08 Apr 2006 Posts: 280 Location: The Netherlands

I never use the universal socket. I have bought spare/custom connectors for the CR-7000 and always make a dedicated custom socket using an old neckboard. I do it to avoid mixing up pin numbers.

Heywood Jablome · Joined: 12 Mar 2006 Posts: 1548

Well, my $100 CR-70 has now paid for itself about 50 times over (literally!) Chips' red was shot: Bad emissions and no cutoff: Rejuvenate had no effect, so I gave it two shots of Automated Repair. Emissions were up and solid (including emission life) and the cutoff came back to life.
I watched it fire up and Chip brought the gains back to normal, and green people were peach again! Mr. Green

He's going to do a fast-and-dirty greyscale on it and see how it measures. Chip, you should re-measure it a few times over a week or two to check for drift.

MikeEby · Joined: 24 Jun 2007 Posts: 5237 Location: Osceola, Indiana

Cool...Back in the 1970's I used to ZAP tubes with low emission often time they would last a good long time. Hope this holds true for Chip.

Mike

WTS · Joined: 08 Mar 2006 Posts: 1276 Location: Calgary

Damn all this talk about zapping tubes, I think back damn I knew I should have kept that tube test gear I had and I had one of those CRT zappers too, well actually is was my dads who passed it over to me.

stefuel · Posted: Mon Apr 20, 2009 10:10 pm Post subject:

Well it's been running for almost 24hrs and the tube seems to be holding it's own. I had developed a couple of other minor problems. I pulled the neckboards off the blue and green to test them at the same time. The green's been fine but the blue tube socket or pins on the tube must have been dirty or corroded as the blue ran away as if a loss of G2 happened. The PJ went into protection and shut down. I cleaned the pins with a scotchbrite pad and spray contact cleaner. I cleaned the neckboard socket with the same spray and a pin of the correct size in each hole to clean the contacts within. It's been solid for two hours now. The other problem is I've seemed to have lost control of the red sub contrast, so I can't grayscale it yet. The green and blue sub contrast is fine.

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

Did you try swapping the red neck board with another to see if you regained red sub contrast?

stefuel · Posted: Mon Apr 20, 2009 10:38 pm Post subject:

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

[quote="stefuel"]

stefuel · Posted: Tue Apr 21, 2009 12:17 am Post subject:

I certainly seem to be having my share of "sub" whatever problems. I considered jumping from the second story window to end my suffering but it's not high enough and I'd just break something Laughing

stefuel · Posted: Wed Apr 22, 2009 10:08 am Post subject:

Tonight I'll dispatch Igore to the laboratory to fetch a replacement RGB and red neck board from the used body parts bin Laughing

stefuel · Posted: Thu Apr 23, 2009 3:05 am Post subject:

Well....the problem ended up being the tube. I just finished installing the new one and all is well. This tube has been failing for a while. The new tube is like night and day. I'll run it for a couple of days then re-calibrate it Friday night.

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

Chip stll need those thomas tubes?

Athanasios

stefuel · Posted: Thu Apr 23, 2009 9:09 pm Post subject:

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

Hi Chip, According to my CR-7000 manual the P19LCP07 :

Bias = 132v

F1= pin 9

F2= pin10

K= pin8

G1= pin5

G2= pin 6

FIL volts= 6.3 volts

Also there is this...

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

tse's pin out is correct. See the PDF

stefuel · Posted: Sat Apr 25, 2009 12:06 pm Post subject:

I think testing the tubes should be part of any CRT calibration and be done before you even take the colorimeter out of the box. I know not everyone has the availability to do this but if you can beg, borrow or steal the equipment for a couple of hours, it could save a pant-load of grief later. My red has been slowly failing over the past year as I didn't even notice it until I decided to re-calibrate and found it unable to do so. I had forgotten how good the color is on the 4600HD until I replaced the red tube. It is now sweet Thumbs Up