CurtPalme.com Home Theater Forum

whats6x7 · Joined: 04 Oct 2006 Posts: 5924

Fired my NEC up and it came up unregistered signal! and the alignment and convergence were off. Its been fine for 5 months now. Is there a quick fix to this or do I have to set it up from scratch again?

HTPC with powerstrip doing 1080i

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

Wow, you have the same problem I just posted about. I haven't figured out a permanent solution yet, however you can use signal entry to create a new memory block, and then after that is done, select "enter number" instead of default values. Then select your old memory block, and most of the settings will work. However, I have had to end up fixing a few settings anyway.

whats6x7 · Joined: 04 Oct 2006 Posts: 5924

Crap! I should have checked first. I already screwed it uo trying to fix it. Oh well, I'll know better next time. Back to the SuperBowl!!!

dbaisey · Posted: Mon Feb 04, 2008 5:29 am Post subject:

Might check your PC settings and cables. In the info menu check to see if it matches sync properties. Separate (5 wire) or combined H/V (4 wire).

When you get the signal rebuilt store a copy of it back in the 50 lines to use incase it happens again. Just re-enter and data copy like Brooklyn suggests. From there start looking into the cause to be sure. Could be deflection oscillator caps, F/V circuit or system board. Doug

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

I realized your problem is different than mine, I get an incompatible match error, you get a signal unregistered error. I used to get that error with my bad deflection board. However I also got a scrambled image along with it.

indecision · Joined: 06 Apr 2006 Posts: 21 Location: Georgia

Doug,

I have the same problem that occasionally (the latest being tonight) that my 6PG wont lock onto the registered sources. Usually I just go in and create new entries and copy over the data. I can't do that tonight for my DVD sources because in 800x600 the menus just cycle across the screen at a rate too fast to see what I am doing to add a new signal. Strange I know.

I was able to re-register my satellite and Xbox 360 at 1080i. What parts do I need to purchase to make this go away? and can I install it myself (I am pretty proficient with the unit and you have had me swap parts before).

Thanks!

dbaisey · Posted: Wed Feb 06, 2008 3:33 am Post subject:

Lately this has become more of a problem but most are source related, a bad sync cable, signal properties etc.

The sources now can and will hit on signals that are not in the input list or registered as well as HDSTB's set to native rate without entering each (if not set to a forced output). HDMI DVD depending on reading the disc or handshake can go to 480i or 480P instead of what you have registered. Game box's running what the disc is native. Other problems can be sending component to the RGB input and it can shut the projector down depending on how the white balance is set. The projector has spec limits on voltages and what they will run at or shut down if any of these are out from 'tweaking' past.

The health of the system board or the oscillator circuits on the deflection board can also be a problem but will usually start by unclean power or brown outs that get to the system board or into the chassis grounding if line power is not right. Age is also a factor as well as fan mods that are doing more harm then good.

Still the two boards that are in question are the deflection board and system board but make sure you have a low earth ground to neutral voltage before replacing. Max shouldnt be over 1VAC and best is 0. A designated circuit with out sharing neutrals is preventative maint. and can help keep the signal inputs intact without corruption.

If you depend on memory to hold things in check instead of being able to run under a no signal condition at spec then it can shut the projector down. Each of the these shut downs will affect the projector in some way esp if you let it cycle on and off. Doug

hansilili · Joined: 09 Mar 2007 Posts: 302 Location: Köln, Germany

Since a couple of weeks my 6PGxtra keeps loosings sync again and again. Found a post of Dough about the dreaded scrambled mess(this one). In 1080p the service menue is scrambled (most of the time now) in lower resolution it works but the settings are lost. That's why I rule out a cable failure. The promlem is not a permanent one but I fear it will occur again and again.

Dough, I would like to check if a board swap would help but I don't understand some of your recommendations:

dbaisey · Posted: Tue Jul 08, 2008 4:30 pm Post subject:

Hans,
The posts are mainly US 60Hz power where you have two phases of 110V. The euro guys may be able to help more on 220V.

US:
Measuring earth ground to neutral voltage is taken at the projector power receptical. Center round hole is earth ground (green), the larger spade hole is neutral (white) and the other is line power (black) from one phase. You measure between the earth ground and the larger spade hole.

A designated circuit is one that is not sharing the neutral with another circuit and fed direct from the service panel with good connections as well as earth ground.

The last memory comment is when you have a system board issue or no lock up it isn't able to grab onto memory. If your running a expanded raster or using memory to hold the white balance / cut off then it can go bright and shut down from the protect 1-2 circuits on the HV board. You dont want the raster or image hitting on the bell / neck of the tube where it can superheat it. In some cases the AKB is lost . When trouble shooting this 'no lock up' or 'scrambled mess' look in the tube face to see if your safe. If you let it cycle on and off to many times it can take out the power supply.
The on screen display will trigger the menu scramble.

I have seen a few 220-110V converters take out a system board also.

In your case the deflection oscillator circuits may be at fault or the system board. Try swapping the deflection first then do a new signal entry and see if it clears up or use a donor chassis to check each. Doug

dropzone7 · Joined: 12 Jun 2007 Posts: 1069 Location: Charlotte, NC

Oh no, it rears it's ugly head again. I don't envy anyone with this problem. Listen to Doug. He's been through this a time or two...

kschmit2 · Posted: Wed Jul 09, 2008 7:07 am Post subject:

another user from Germany recently bought a PG9000 (!) deflection board from me to resurrect his PG9200.

He did appear to be an EE though, and very knowledgeable.

In theory the boards don't interchange,but maybe he just used the PG9100 board as a donor for parts.

If that is an option for you, let me know, as I have another known working PG9000 deflection board here.

hansilili · Joined: 09 Mar 2007 Posts: 302 Location: Köln, Germany

Thanks for all your comments and the clarification. Excuse me if I keep insisting on that power supply issue.

dbaisey · Posted: Wed Jul 09, 2008 5:47 pm Post subject:

Unclean power in my posts are from (US) line power before the projector or other source devices. The issue is how it gets into the system board and what is failing to down the board.

Google hum bars /ground loop /audio hum /phasing. Being on a different phase for source devices will also cause problems. This potential goes up depending on how the neutrals are shared or if the earth ground / neutral is weak on any particular circuit

Memory or lack of memory if it doesn't lock on.
Im sure you have seen posts of a FD error before and shut down. In some of these cases flipping the test /normal switch to test will allow it to start up. In this it defeats brightness if the memory of brightness / contrast or kelvin W/B is set to high and stored.

Also some posts on lit diag lines in the back raster or overbright that AKB will correct (band-aid) if turned on. Usually from tweaking G2.

Reference white balance is the full on pot tweak procedure where kelvin / white balance is done via software W/B settings.

rickycleung · Joined: 09 Apr 2008 Posts: 55

dbaisey · Posted: Thu Jul 10, 2008 12:04 pm Post subject:

Ricky,
No! my posts are for US 110V power only!

rickycleung · Joined: 09 Apr 2008 Posts: 55

Doug,

So, it is safe for my XG even the earth ground to neutral is over 1.xxx voltage for 220 voltage XG.

Ricky

dbaisey · Posted: Thu Jul 10, 2008 5:42 pm Post subject:

Ricky,
You need to ask the euro 220V guys what is normal or how to correct if to high. You guys use one neutral and three phase 50Hz from what I see on the above post.

What value is xxx?