| Author |
Message |
macgyver655
Joined: 22 Aug 2007
Posts: 8508
|
| Posted: Wed Jan 25, 2012 4:04 pm Post subject: |
|
|
Geez Barclay, if I knew you were going to get this involved and write a big response I would of posted to save you the trouble.
You have to really know the NEC system board and have seen a lot of the various problems they have.
When Curt says it's loosing it's memory, it's not really loosing it. The memory and it's adjustments are still there. The board has lost it's ability to lock onto that memory which is called a signal entry.
|
|
| Back to top |
|
 |
barclay66
Joined: 27 Jun 2011
Posts: 1304
Location: Germany
TV/Projector: Marquee 9500 Ultra
|
| Posted: Wed Jan 25, 2012 4:22 pm Post subject: |
|
|
| macgyver655 wrote: | | When Curt says it's loosing it's memory, it's not really loosing it. The memory and it's adjustments are still there. The board has lost it's ability to lock onto that memory which is called a signal entry. |
Doh'
Then maybe I'm completely sideways and the problem is more at the interface level between analog&digital...
Regards,
barclay66
|
|
| Back to top |
|
|
macgyver655
Joined: 22 Aug 2007
Posts: 8508
|
| Posted: Wed Jan 25, 2012 4:40 pm Post subject: |
|
|
| barclay66 wrote: | | macgyver655 wrote: | | When Curt says it's loosing it's memory, it's not really loosing it. The memory and it's adjustments are still there. The board has lost it's ability to lock onto that memory which is called a signal entry. |
Doh'
Then maybe I'm completely sideways and the problem is more at the interface level between analog&digital...
Regards,
barclay66 |
The problem is in the tank circuits which also control the ability to lock onto various input signals. The system board is designed to be able to lock to various signals. Then you setup an entry for a particular signal. Then everytime that particular signal is inputted the system board identifies that signal and locks to it under that entry, using all the saved data pertaining to it.
I actually have a lot of hours invested in these system board problems.
The problem with these system boards is they sometimes loose this ability showing different symptoms on occasion. I'm pretty sure I identified the problem parts a long time ago but never tried the solution for 2 reasons.
1. being there was little interest shown to be worth any more effort
2. the parts are not easily found and would also take much effort.
|
|
| Back to top |
|
|
CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
|
| Posted: Thu Jan 26, 2012 2:08 am Post subject: |
|
|
| barclay66 wrote: |
Then maybe I'm completely sideways and the problem is more at the interface level between analog&digital...
Regards,
barclay66 |
What ever you are Barclay, its a first class effort all the same 
| gjaky wrote: | | By the look of the LVPS schematics of my PG xtra it has active PFC, however looking at plain PG's schematics it doesn't have. this is Funny because the creepy old GP5000 also had active PFC. |
Power factor correction?
|
|
| Back to top |
|
|
gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
|
|
| Back to top |
|
|
CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
|
| Posted: Thu Jan 26, 2012 2:13 pm Post subject: |
|
|
|
Roger that. Does it give any mension of power factors running and standby on the PG?
|
|
| Back to top |
|
|
|
|
