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angelzxr4ti
Joined: 29 Dec 2007
Posts: 9
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| Posted: Thu Apr 17, 2008 3:11 pm Post subject: nec 6pg xtra fc code wont power up |
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she just turned of now i have this code ive tried to look it up on my oiwn with no luck please help 
it has a fc code
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Apr 17, 2008 6:23 pm Post subject: |
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Not seeing that code either. Either a non listed code, display partly not working or problem with the system board.
Try unplugging projector, remove point board for now, reseat system, wave and control boards, plug back in and turn on.
Notice if fans are spinning up and how long between turning it on and the display error.
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Apr 17, 2008 6:29 pm Post subject: |
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Found it. fc is VCC+15V down. Let me look a little further.
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Apr 17, 2008 6:45 pm Post subject: |
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I'm not seeing a fuse on that line so chances are either a bad component somewhere is drawing that line down or there is no +15v output which means a bad power supply. 
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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: Thu Apr 17, 2008 9:02 pm Post subject: |
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This is a rare problem on the Xtra. AS mac says, it's either a lack of 15 volts from the power supply or a short on a board somewhere. Problem is, the 15 volts goes almost everywhere in the set. Disconnect the F, A and C boards to start with.
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angelzxr4ti
Joined: 29 Dec 2007
Posts: 9
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| Posted: Fri Apr 18, 2008 7:33 pm Post subject: |
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ok so i unplugged it for a day and i was curious to plug it in today no i have a AP code so i tried to turn on and fc comes back on the fans do get power to them for like 3 seconds
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angelzxr4ti
Joined: 29 Dec 2007
Posts: 9
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| Posted: Sat Apr 19, 2008 10:53 am Post subject: |
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i guess i should mention i was messing with the vertical pots before i read this from Layout and Setup Tips i did this and it ran fine for like 20 minutes and the it just shut off
H width control- you can CAREFULLY adjust this control to widen out the raster of the NEC projectors. It’s a good idea to slowly rotate this control while the set is off. If this control is corroded or noisy, it’s possible to blow the deflection board while rotating this control while the set is on. Rotating the control CCW will increase the image width, rotating in a CW direction will shrink the image. Be careful not to overshoot the edges of the tubes as per any CRT installation
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Sat Apr 19, 2008 11:06 am Post subject: |
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Great. Thank Curt for that.
I've told him a couple of times that's dangerous info...
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Sat Apr 19, 2008 12:57 pm Post subject: |
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| Mark_A_W wrote: | Great. Thank Curt for that.
I've told him a couple of times that's dangerous info... |
If you read the post again he's says he turned them before he read that section. Curt's section warns you of the consequences. If he read it first maybe he wouldn't of turned 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: Sat Apr 19, 2008 2:43 pm Post subject: |
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Besides, the odd deflection board failure gives me business..
No, more seriously, I have tweaked that pot 100s of times with the set on with no issues. Your results may vary.
Check the two red LEDs on the deflection board. Do either one of them stay on the entire (short) time that the set does come on?
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Sat Apr 19, 2008 2:56 pm Post subject: |
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Another suggestion if you insist on turning that pot or any other one for that matter, you should first turn off and unplug the set, take a black marker and put a dot on the part of the pot that turns and a dot on the board in the same location so you have a reference point. Then while still unplugged turn the pot back and forth, 10, 20 even 30 or more times to clean off the parts inside the pot for a good contact. Then set it back to the points you marked, plug it in and turn it on. Now if you must turn it at least the contacts are cleaner and chances of damage are much less.
Sorry Curt but this process may give you less repair work...... 8)
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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: Sat Apr 19, 2008 4:38 pm Post subject: |
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No, I don't need any more repair work. THe problem is, I used to get dozens of emails from people wanting to know how to increase their width, as the remote setting was at 100%, so I put the info up there on the site.
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Sat Apr 19, 2008 4:55 pm Post subject: |
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Its actually a good warning seeing how everyone wants to be turning stuff to either try to fix a problem or get a better pic. This way if they read the warning and turn something that fries a board they can only blame themselves.
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Sat Apr 19, 2008 5:38 pm Post subject: |
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angelzxr4ti, if you want to try and verify if it's the deflection board or not, locate connector PD on the deflection board. With the projector off and unplugged, disconnect the PD plug. Plug projector back in and turn on. It will only run a few seconds and shutdown and then spit out a code.See if you now get an F8 code.
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angelzxr4ti
Joined: 29 Dec 2007
Posts: 9
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| Posted: Sun Apr 20, 2008 6:19 am Post subject: |
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| Curt Palme wrote: | Besides, the odd deflection board failure gives me business..
No, more seriously, I have tweaked that pot 100s of times with the set on with no issues. Your results may vary.
Check the two red LEDs on the deflection board. Do either one of them stay on the entire (short) time that the set does come on? |
Yes Curt the one towars the center does stay on longer then the one towards the corner of the board.So even when i unplug the unit and plug it up again it has a AP code then when i turn it on it goes back to fc. so how hard is it to get one of these boards or can they be repaired if needed the projector was running fine until i decided to mess with these.Hey Curt if you can fix this board can you make it where i cannot tweak it any more like a little dab of super glue here a little dab there 
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