Forum: Troubleshooting Computer Displays
Yesterday, 11:28 AM
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Replies: 6
Views: 145
Re: Eizo S2000 suddenly died
Sorry maybe I was not clear, I meant that I don't think the issue is in the EDID data with my previous message.
However I got a bit intrigued and used Entech Taiwan's Monitor Asset Manager...
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Forum: Troubleshooting Computer Displays
05-17-2022, 12:17 PM
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Replies: 6
Views: 145
Re: Eizo S2000 suddenly died
Thanks for your reply!
I did not disassemble the monitor that far yet to reach them but I did now.
Must say this monitor has a really nice construction!
But I could see no difference in the...
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Forum: Troubleshooting Power Supplies and Power Supply Design
05-16-2022, 01:44 PM
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Replies: 34
Views: 699
Re: Cyberpower CP900EPFCLCD - F03 Error
The "T" in "TAPc" could stand for "Time Delay" i.e. a slow blow fuse.
But none of those letters really make sense so could just be production numbers...
If you try with a quick blow fuse you don't...
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Forum: Troubleshooting Computer Displays
05-15-2022, 02:56 PM
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Replies: 6
Views: 145
Eizo S2000 suddenly died
Hello, my trusty old Eizo S2000 LCD monitor suddenly died as I was using it the other day.
The picture quality started degrading and a few seconds later washed out completely, see attached photos....
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Forum: Troubleshooting Power Supplies and Power Supply Design
05-15-2022, 12:43 PM
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Replies: 22
Views: 1,955
Re: Dell 2700w j728n 3kVa UPS not starting
"Smart charger" well that is probably the definition of the word oxymoron if you look it up in a dictionary!
If you have a "stupid" charger then try that, if not it might be worth getting one.
(You...
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Forum: Troubleshooting Power Supplies and Power Supply Design
05-15-2022, 12:35 PM
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Replies: 34
Views: 699
Re: Cyberpower CP900EPFCLCD - F03 Error
Yes exactly, just connect it where the fuse was before.
Cut away the heatshrink tubing from the old fuse and read what it says on the ends: there are fast and slow fuses and it is important to...
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Forum: Troubleshooting Power Supplies and Power Supply Design
05-15-2022, 12:42 AM
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Replies: 34
Views: 699
Re: Cyberpower CP900EPFCLCD - F03 Error
Great, I would replace this fuse with an old incandescent 40w or 60w light bulb.
If this bulb turns on bright when you turn the UPS on you still have a big problem somewhere.
You can of course skip...
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Forum: Troubleshooting Power Supplies and Power Supply Design
05-15-2022, 12:26 AM
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Replies: 22
Views: 1,955
Re: Dell 2700w j728n 3kVa UPS not starting
Anything that simulates such a large battery voltage is going to be prohibitively expensive.
Have you actually tried to charge each battery separately on a good charger and see what happens?...
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Forum: Troubleshooting Power Supplies and Power Supply Design
05-14-2022, 08:45 AM
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Replies: 34
Views: 699
Re: Cyberpower CP900EPFCLCD - F03 Error
Yes proper standby charge voltage for a lead acid battery is around 13.7v and charge voltage is around 14.7v
Now that you replaced the Viper have you checked what voltages you have on the capacitors...
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Forum: General Electronics Technical Discussion
05-10-2022, 11:10 AM
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Replies: 35
Views: 516
Re: Line filter question
As redwire mentioned above there exists medical rated version for inlet filters.
They omit the Y capacitors, for example I recently bought a Schaffner FN9222E-1-06 filter.
The medical version of...
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Forum: General Electronics Technical Discussion
05-10-2022, 10:51 AM
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Replies: 35
Views: 516
Re: Line filter question
It is normal to have a small difference because there is no load on the earth wire.
There can also be different lengths of cables and some differences in resistance due to not great contacts...
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Forum: Troubleshooting Game Consoles & Other Weird Devices
05-09-2022, 01:31 PM
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Replies: 106
Views: 18,430
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Forum: General Electronics Technical Discussion
05-09-2022, 11:04 AM
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Replies: 35
Views: 516
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Forum: Troubleshooting Game Consoles & Other Weird Devices
05-09-2022, 11:00 AM
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Replies: 106
Views: 18,430
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Forum: Troubleshooting Power Supplies and Power Supply Design
05-08-2022, 10:44 AM
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Replies: 5
Views: 131
Re: Seasonic dead after wrong SATA power cable
Ok, if you do not even have 5v standby working you will have to start from the beginning: measure the voltage on the big main filter capacitor.
It should be around 325v DC with 230v AC input.
If...
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Forum: General Capacitor Questions & Issues
04-30-2022, 08:41 AM
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Replies: 18
Views: 355
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Forum: Troubleshooting Power Supplies and Power Supply Design
04-30-2022, 03:21 AM
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Replies: 31
Views: 761
Re: xbox 360 adapter - 240v to 110v
The CP019B seems to be a derivative of SCY99099B.
A datasheet does not exist that I could fine for either of them.
But if you Google for the second one you will get to a Russian forum where a user...
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Forum: Troubleshooting Power Supplies and Power Supply Design
04-30-2022, 12:02 AM
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Replies: 31
Views: 761
Re: xbox 360 adapter - 240v to 110v
Ok, you would need to do that test to verify that the unit does not have Active PFC but I'm pretty sure it does not.
The big transformer like component next to the primary capacitor is probably a...
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Forum: Troubleshooting Power Supplies and Power Supply Design
04-29-2022, 10:11 PM
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Replies: 31
Views: 761
Re: xbox 360 adapter - 240v to 110v
There is a control IC on the back of the board: U1, I can't read its markings though, so post a better picture of that.
Also measure the voltage on the primary bulk capacitor when running from your...
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Forum: Troubleshooting Power Supplies and Power Supply Design
04-29-2022, 06:22 AM
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Replies: 5
Views: 162
Re: Hp smps power suppy ps4321 help!!!!!!
It is a high frequency transformer, you can't ohm measure it.
You need to use a transformer tester like a ring test, can also be done with an Oscilloscope if you Google for it.
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