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lawbob
Joined: 18 Oct 2011
Posts: 18
Location: scotland
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| Posted: Tue Jun 26, 2012 8:46 pm Post subject: nec 9 power problems |
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hi there have a problem with my nec 9 projector stand by light will only stay on for seconds and then goes out. we thought it was a power supply board problem but have the supply board checked and i am told there is nothing wrong there are no error codes showing any one with an idea thanks robert[/list]
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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: Wed Jun 27, 2012 5:35 am Post subject: |
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So you're saying that the whole back light that illuminates the buttons in the standby mode go out after a few seconds. I'd virtually guarantee that the power supply is bad. It's a very complex supply that can't really be tested as a standalone item. Ideally you'll swap it out with a working unit to make sure it's bad.
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lawbob
Joined: 18 Oct 2011
Posts: 18
Location: scotland
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| Posted: Wed Jun 27, 2012 8:31 am Post subject: |
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hi there thanks for the quick reply i cant find a working nec to allow me to do what you suggest. do you have a power supply for that model available the part number is 79642151 and m rps/1201g.if you have please advise me the cost including shipping thanks again robert
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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: Wed Jun 27, 2012 1:20 pm Post subject: |
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I do, the problem is that it's a 110 volt supply only. Do you have a stepdown transformer to convert from 220 to 110 volts?
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Wed Jun 27, 2012 2:22 pm Post subject: |
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Hey curt, isn't there a jumper for voltage selection inside the PG power supplies?
_________________
projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
current: VDC Marquee 9500LC
The MOD: VNB-DB, VIM-DB
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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: Wed Jun 27, 2012 2:29 pm Post subject: |
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No, not that I know of. I think there are some mods that can be done, but I've never done them. I believe that the AC input board is also differently laid out between the two sets. But Lawbob, if you want to take your LVPS out, pop off the top cover and take some pictures, if the main PC board is the same between the 110 and 220 volt versions, then I could most likely send you just that board rather than the whole set.
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Wed Jun 27, 2012 2:32 pm Post subject: |
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Yes, there is a jumper inside, and some other components should be changed, the picture is for PG plus, but I think it is basically the same as plain PG.
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_________________
projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
current: VDC Marquee 9500LC
The MOD: VNB-DB, VIM-DB
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Wed Jun 27, 2012 2:38 pm Post subject: |
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I have PG xtra which is very different, but if you don't mind I attached the corresponding page from the PG+ SM, I circled the jumper which should be altered.
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PGP_ps2.jpg |
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327 Time(s) |
_________________
projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
current: VDC Marquee 9500LC
The MOD: VNB-DB, VIM-DB
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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: Wed Jun 27, 2012 2:44 pm Post subject: |
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Good finds, I don't think I have either of those on file here. Thanks!
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lawbob
Joined: 18 Oct 2011
Posts: 18
Location: scotland
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| Posted: Wed Jun 27, 2012 7:38 pm Post subject: |
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hi curt transformer to change from 220 to 110 they are readily available in scotland so that is not a problem.i have spoken to mr alan head who advises me on all this and has told me to ask if you happened to have c/drive for the same projector.if you can let me no the cost including shippment. i would also like to thank giaky for his input thanks very much robert
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Thu Jun 28, 2012 7:26 am Post subject: |
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LawBob, they may be available, but make sure they can do around 1.5kVA.
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lawbob
Joined: 18 Oct 2011
Posts: 18
Location: scotland
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| Posted: Thu Jun 28, 2012 9:44 am Post subject: |
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thanks for that will check it out robert
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lawbob
Joined: 18 Oct 2011
Posts: 18
Location: scotland
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| Posted: Thu Jun 28, 2012 12:36 pm Post subject: |
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have just checked transformer screwfix can supply 3k/5k-1.5 kva continuous that should do the job thanks casethecorvetteman for bringing this to our attention robert
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lawbob
Joined: 18 Oct 2011
Posts: 18
Location: scotland
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| Posted: Fri Jun 29, 2012 8:14 am Post subject: |
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hi curt could you please give me a total cost for the power supply and the c drive including shipment to scotland so i can arrange payment thanks robert
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Fri Jun 29, 2012 9:58 am Post subject: |
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Dont buy one yet cause you may be able to get Curt to flick it over to 240 volt before he sends it.
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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: Fri Jun 29, 2012 1:30 pm Post subject: |
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Sure, let me test them this weekend.
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lawbob
Joined: 18 Oct 2011
Posts: 18
Location: scotland
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| Posted: Fri Jun 29, 2012 1:50 pm Post subject: |
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thanks casethecorvetman will not buy till i hear curt has also said he will check this weekend that would be good thanks to both of you robert
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sat Jun 30, 2012 7:46 am Post subject: |
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I have a 240 volt one here if Curt doesnt have a suitable one, its from a 9 PG Plain.
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lawbob
Joined: 18 Oct 2011
Posts: 18
Location: scotland
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| Posted: Mon Jul 02, 2012 8:00 am Post subject: |
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hi casethecorvtteman thats good to know if curt cant help me out i will be in touch thanks robert
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Mon Jul 02, 2012 8:11 am Post subject: |
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No worries mate, let me know if you need it, although im a last resort, cause i only have one spare for 3 9PGs 
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