Re: NEC Multisync 2470WNX LCD monitor doesn't power up
diode D904 - I knew it had 3 legs. It was tested as you described. Results are already included.
I managed to get much better pictures so may you could take another look?
Let me know if something is still not clearly visible.
Thanks...
mctx
New Member
Last Activity: 03-15-2017, 07:50 AM
Joined: 02-05-2017
Location: Leeds
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Re: NEC Multisync 2470WNX LCD monitor doesn't power up
Thank you for your suggestions and apologies for the quality of pictures.
I've tested 3 5V pins in 2K Ohm range - 0.471
diode D904 2KOhm range 0.481, reverse-0.459
0.480, reverse-0.459
cap C916 2KOhm range 0.480, reverse-0.458
rectif L903 2KOhm range 0.000 BOTH DIRECTIONS
Could you expand on "problem is in the primary section of the power supply. Seems like something went open? " (or point me where to resea...Leave a comment:
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Re: NEC Multisync 2470WNX LCD monitor doesn't power up
Budm,
I've attached the best pictures I could squeeze out of my smartphone using support to eliminate hand shaking. I don't have better digital camera to improve the quality of pictures. Pin's labels are exactly as they are shown in DC channels.jpg. Can you work with this level of clarity? Tell me what you need to see and I'll do my best to provide the info.
Is it normal that 5A mains plug fuse was blown and on-board 2.5A fuse was not?
Thanks....Leave a comment:
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Re: NEC Multisync 2470WNX LCD monitor doesn't power up
Capleaker, I have attached (decent IMHO) pictures to make advising easier for those who wanted to help.
Any chance you could link your suggestions to the pictures of my board?
1. Could you point where do you measure STBY voltage?
As I already said there is no voltage on output pins (DC channels.jpg)
and I cannot see STBY pin(s) on the PSBoard.
2. "So if you don't have STBY voltage, you have to fix that first".
OK, how?
Google search for "badcaps.net+fixing...Leave a comment:
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Hello Andrew,
Sorry to bother you, but could you share you method of testing power board you mentioned
[url]https://www.badcaps.net/forum/showthread.php?t=56559&highlight=PS_ON+shorted+ground[/url]
Thank youhttps://Hello Andrew,<br /> Sorry to...r /> Thank youHello Andrew,
Sorry to bother you, but could you share you method of testing power board you mentioned
[url]https://www.badcaps.net/forum/showthread.php?t=56559&highlight=PS_ON+shorted+ground[/url] -
Re: NEC Multisync 2470WNX LCD monitor doesn't power up
I know where the 5v pins on the PSU in the computer.
Where are they on the power board?
I've already checked the 5v (and all others) pins shown in the attached picture
DC channels.jpg.
Do I need to short PS_ON pin with something else to get the power board doing something?
Thank youLeave a comment:
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NEC Multisync 2470WNX LCD monitor doesn't power up
[SIZE="1"]I need help fixing my NEC Multisync 2470WNX LCD monitor.
It was working flawlessly until couple of days ago it would not turn on.
I've checked the mains cable and found blown 5A fuse.
After replacing the fuse and testing cable, the monitor is still doesn't power up. I took it apart and could not find any caps looking suspicious.
All other parts also looked OK. I used multimeter to check the power board 715G2428-2. With mains connected, I could detect AC voltage up to see
voltage testing.jpg. None of the exit DC channels (24-5V, etc), see... -
Re: New Members - please post your introductions here
Hello everyone,
Visited this site many times before searching (and often finding) useful info about computers and consumer electronics. Hope to solve my current headache with your expert help. Thank you in advance.Leave a comment:
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