CurtPalme.com Home Theater Forum

shar1950 · Joined: 10 Feb 2009 Posts: 80 Location: alberta, canada

After switching convergence board,green tube, and necksocket for green tube,I still had bright green raster. I turn the middle pot on the "DO NOT TOUCH " and was able to turn down the raster, to the same level has the others. Started again on set-up. Did the raster centering on all tubes,next center the image into raster. Was just ready to put the lenses back,when the pj shut down,displaying "FC" and the red led in the middle of the board came [ D023] . Can some-one help here ?

draganm · Joined: 08 Mar 2006 Posts: 8990 Location: Colorado

wow, that thing is a Lemon, every time you fix something a new problem pops up. Sad

Maybe it's time to get a different projector, like a nice MArquee?

shar1950 · Joined: 10 Feb 2009 Posts: 80 Location: alberta, canada

So what would this lemon be worth ? If I was to trade this lemon in for some thing else, is any one need it for parts ?

Bruce 09 · Posted: Tue Apr 07, 2009 3:16 am Post subject:

I could use a set of lenses, That is if you don't end up breaking them into pieces. Sometimes it feels better to take a bat to the whole thing. Laughing

Bruce

**Curt Palme** · Posted: Tue Apr 07, 2009 3:29 am Post subject:

The set originally came from me, about 3ish years ago. April of 2005 to be exact. Three years in, the green tube shorted out, full on brightness, that we originally diagnosed as a bad neck board. Shar bought one off someone else, had the same problem. He then got a tube from somewhere else, what condition, etc is unknown. He then had a pix that was way too green, either indicating a problem with the new tube, or possibly that the original shorted green tube caused other issues in the set.

The problem is with this set at this point (and no offense intended to Shar), that he's been into the set, and now has a multiple set of problems. With the amount of posts with different problems posted here and on avs over the last few weeks, it becomes very difficult to try and diagnose this. I've offered to look at the set if he brings it to me or ships it, but being that shipping is $150ish each way, he hasn't taken me up on my offer. This could be something as simple as a wrong connection, but now that the G2s have been messed with to get the green brightness down, who knows at this point.

That's why I haven't jumped in to the numerous threads posted here by Shar, the set at this point needs a tech to go through it.

As for the value of the set, that's a tough call. Not sure if the new green tube is good or not, sets like this on an as is bases are dirt cheap on ebay, but if the blue tube is in really nice shape, then it could be worth $100-150 alone to the right person.

shar1950 · Joined: 10 Feb 2009 Posts: 80 Location: alberta, canada

Thank god....I don't keep golf clubs in the threater room, just full and empty beer cans, man it's been close.

shar1950 · Joined: 10 Feb 2009 Posts: 80 Location: alberta, canada

The only thing that was adjusted is the G2 for the green tube,turn it counter-clockwise until the green raster was the same as the other 2 tubes. Adjusting this is causing the unit to shut down on "FC' ?

Brooklyn · Joined: 17 Sep 2007 Posts: 494 Location: Morgan Hill, CA

I know from owning several Necs that you should never adjust the G2 unless you got an o-scope and you know what you are doing or else you could mess up things :/

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

Normally you shouldn't touch the G2 unless you have no other option. shar1950 HAD NO OTHER OPTIONS and it was the problem. So dont be beating him up..... Smile

I was following what him and Curt were doing and I was the one who suggested turning down the G2 to see is the raster went down. And it did, so he had a problem.. Its was either that or have a non usable projector. Did this attribute to his current problem, I doubt it.

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

FC is 15v line down. Try reseating all the cards in the cage and go over any other connections you find to make sure something is not loose.

shar1950 · Joined: 10 Feb 2009 Posts: 80 Location: alberta, canada

I know for a fact that all the connection are on the correct place,because I mark all wires and made a rough picture of all board removed and replaced,one at time.
I also know that Curt is in the business of fixing and selling electronic parts and projectors. So spending $300 for shipping and the other unknown cost of repairing the set and replacing parts, time spend on adjusting the GA2, so this set could cost another $300-400 more, for a set that worth only knowiable hundred dollars, don't make much sense to me at all. I'll start looking for some thing else really soon.

I see that no one has mention any thing about the " FC" means ??

I should also mention that there are alots of knowleable people on this site that have help me with these problems....I says " thank you guys ".

shar1950 · Joined: 10 Feb 2009 Posts: 80 Location: alberta, canada

Oh....wrote too soon...what do you mean by cage ?

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

FC means something is going on in the 15 volt line. Doesn't necessarily mean you lost it or a P/S problem. just that its being triggered. I have a question, you said you were doing raster centering and size just before this happened. Were you adjusting the size and position pots on the deflection board?

perisoft · Joined: 29 Aug 2007 Posts: 2920 Location: Ithaca, NY

What is it about NECs, anyway? Any other PJ that I've heard of, adjusting G2 is pretty much run-of-the-mill. On my 808, you turn the pot until the light goes out (or, in my case, until I get the raster just visible; screw the light).

And as far as I'm aware, G2 works roughly similarly for all PJs. But if you adjust the G2 on an NEC without an oscilloscope, you might as well throw it in the trash? Ok, exaggerating a bit, but apparently not much... How bizarre.

**Curt Palme** · Posted: Tue Apr 07, 2009 4:07 pm Post subject:

I agree completely. Then again, look at the NEC HV section compared to the Barco or Marquee. I think I've had a total of maybe 10 HV problems with NECs, in the 100s that I've dealt with compared to 100s of HV problems of the 10 or so MArquees and Barcos I've worked on.

OK, maybe that was exaggerated.. Wink

But yeah, take the good out of each set make and model, and you'd have a killer set.

Combine all the bad of each make and model and you'd get..... wait for it..... are you ready....

A JBL 6810.

You thought I was going to say Ampro, weren't you? Very Happy

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

perisoft · Joined: 29 Aug 2007 Posts: 2920 Location: Ithaca, NY

shar1950 · Joined: 10 Feb 2009 Posts: 80 Location: alberta, canada

No...I don't move or adjust pots at all, except that G2 pot on that "do not touch" board, I only moved that when it was mentioned.
I just moved the 2 ring just behind bellow, large part of the tube,where it narrow down to the long tube. I'll go back and check all the connection on all the boards and see what happens.

One other question...is there no way to test the orginial green tube, that was or is shorted, I don't want disgard it to the recycle bin,if it can be used again.

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

**AnalogRocks** · Posted: Tue Apr 07, 2009 5:36 pm Post subject:

Hmmm I got a Runco 900 that had a bright green when it was running. I turned down the G2 pot and all was fine. Was I just lucky?