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micolatria



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viewsonic vg700b psu 1
#27665394 - 02/19/22 04:33 PM (1 year, 11 months ago) |
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hi. my lcd monitor has not his original psu. It shows 12v and 3.8 amp. I have some psu 1. ktec 12v 4 amp 2.alcatel 12v 3 a 3. apd 12v 2a 4. 12v 5 amp
i 've tried eachone and screen turns green led , orange and poweroff; no signal neither menu
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BSUUF2
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Re: viewsonic vg700b psu [Re: micolatria] 1
#27665465 - 02/19/22 05:40 PM (1 year, 11 months ago) |
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I'd only use PSU 1 or 4, assuming they are DC (I've had some routers PSU turn out AC...). I've got a ViewSonic too (VX4380-4K), it doesn't automatically select the correct input. So if you turn it on, it just shows a blue LED, then the ViewSonic logo, then turns off. After it has turned off, search for the input select button (mine has it on the backside), hit that button, it turns back on after a few seconds, shows a menu and then change to the correct input. If that doesn't work, your screen or cable might just be dead.
-------------------- LAGM2022
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micolatria



Registered: 12/03/13
Posts: 465
Loc: Universo
Last seen: 4 days, 3 hours
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Re: viewsonic vg700b psu [Re: BSUUF2] 1
#27665591 - 02/19/22 07:27 PM (1 year, 11 months ago) |
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my psu 5 amp says (AC Adapter). lcd where psu plugs is labeled as DC IN. i will buy an dc adapter as you said. screen is black (no logos, no menu) and led is green. vga wire is good. thanks for your support
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BSUUF2
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Re: viewsonic vg700b psu [Re: micolatria] 1
#27665836 - 02/19/22 11:53 PM (1 year, 11 months ago) |
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Quote:
micolatria said: my psu 5 amp says (AC Adapter). lcd where psu plugs is labeled as DC IN. i will buy an dc adapter as you said. screen is black (no logos, no menu) and led is green. vga wire is good. thanks for your support
It's AC mains, DC secondary usually. What's on the label?
-------------------- LAGM2022
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micolatria



Registered: 12/03/13
Posts: 465
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Re: viewsonic vg700b psu [Re: BSUUF2] 1
#27666063 - 02/20/22 06:59 AM (1 year, 11 months ago) |
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BSUUF2
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Re: viewsonic vg700b psu [Re: micolatria] 1
#27666911 - 02/20/22 07:11 PM (1 year, 11 months ago) |
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That one is good, must be some other problem.
edit: Do you have a second screen/laptop? If yes, does it show up in your display settings, once it's connected to your running computer and the power button turned on? Then there might be still some life in it's mainboard and/or a partially dead cable or a fried CCFL inverter or something else. I don't know where you're located, but I've seen replacement mainboards (most from the US) for about ~$10 on ebay, but I'd check that inverter (voltmeter needed) first and look for loose cables before buying more stuff.
-------------------- LAGM2022
Edited by BSUUF2 (02/20/22 07:33 PM)
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micolatria



Registered: 12/03/13
Posts: 465
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Re: viewsonic vg700b psu [Re: BSUUF2] 1
#27666958 - 02/20/22 07:43 PM (1 year, 11 months ago) |
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a dell lcd showing test. My viewsonic does not show menu/check conection
 i will follow your tips. thanks for your worth and precious time.
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BSUUF2
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Re: viewsonic vg700b psu [Re: micolatria] 1
#27667545 - 02/21/22 09:03 AM (1 year, 10 months ago) |
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No problem.
-------------------- LAGM2022
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