Re: VRM Caps? That is a Power Supply right?
OK thanks for the replies gents.
And yeah it does clearly sound like a heat issue, which is why so many people can go from 10 minutes to 60 minutes if they only put a active fan blowing down onto the VRM's, but 60 minutes is not enough lol.
SkOrPn
Member
Last Activity: 03-02-2018, 10:21 PM
Joined: 10-28-2017
Location: Tijeras
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Re: Dell 2407WFPb Monitor - Bad Cap
Well then I am happy I mentioned it to you.
I wish that was the problem with mine but I have 9 blown caps on the video board itself and yet it lasted from early 2006 until late 2017 before it went black screen. I can't find anything wrong with the PSU, all the tests show its still working. I got a Rubycon kit for it but I have not bothered to solder them in yet....Leave a comment:
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Re: Dell 2407WFPb Monitor - Bad Cap
Yeah it looks like that Cap started leaking, but no telling for how long. You could try finding that cap but it might be easier to just buy the entire PSU for it. It's only $12.99 plus free shipping.
Oh and I am not sure what you meant by "albeit from ...China", 100% of Dells PSU's come from China. By the way, your Cap is a Panasonic cap, so I am surprised it went bad. Mine had all Elite Caps.
[url]https://www.ebay.com/itm/ORIGINAL-Brand-New-Power-Supply-Board-4H-L2K02-A01-for-2407WFPB/272410466809[/url]Re:...Last edited by SkOrPn; 02-22-2018, 06:43 PM.Leave a comment:
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Re: VRM Caps? That is a Power Supply right?
I think I will try replacing these caps with the below Nichicon's and hope I didn't make a selection error. lol
At least the capacitance, voltage and size are exactly the same. Tried going higher on voltage to 6.3v but other specs seemed to change on me. I guess I will always need active air flow no matter what I do. Asrock sure made these boards as cheap as they could.
Oh and I think these new ones are Solid Polymer and the old ones are electrolytic. I'm not sure on that though.
[url]https://www...Last edited by SkOrPn; 02-22-2018, 06:25 PM.Leave a comment:
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VRM Caps? That is a Power Supply right?
Hello again,
I have a question about cheap VRM caps (AMD Ryzen processor power supply VRM). I have a gifted motherboard (AB350M Pro4) that is well known to cut power to the CPU about every 10-15-20 minutes or so depending on how much air flow you force over the VRM. Since this is a Power Supply thread and VRM are Power Supply for a processor, I thought I would ask my question here. Should I move it to another section perhaps?
Can the below 4 pictured caps be replaced with far higher quality versions? I believe these caps have surpassed their heat rating limit (it...Last edited by SkOrPn; 02-22-2018, 04:31 PM. Reason: added newegg link to see the massive complaints -
Re: Dell 2407WFPb Monitor - Bad Cap
Sounds like a dying CCFL to me, but I'm no expert. At $10 a pop per CCFL (guessing), if you can even find them I am not sure it is worth replacing 6 of them, and that's what you would need to do, probably. I still have not found a supplier for those. If not a CCFL, then the TCON maybe? I'm not sure how the Inverter board could cause anything but the entire screen to go dark, but not dark patches??? CCFL or TCON is my guesses, or maybe the main video board.
My monitor is 11 years old now and just died a few months ago suddenly, with...Last edited by SkOrPn; 12-20-2017, 01:21 AM.Leave a comment:
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Re: Dell 2407WFPb Monitor - Bad Cap
Will these work for the large cap on the PSU? Are they even genuine Rubycons?
[url]https://www.ebay.com/itm/141467570852[/url]Re: Dell 2407WFPb Monitor - Bad Cap<...67570852[/url]Leave a comment:
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Re: Inverter tester using old CFL
Haha, well I wasn't thinking of putting that UV in my monitor. I was just wondering if the Dells inverter would fire it up. I already have some CFL (twisted bulbs) to use, but that UV tube one already has proper wires attached.
I know my video board needs caps, and my psu is probably still OK although should get news caps for the heck of it anyway, but I don't know if the inverter is OK or not. I don't even know how to remove the CCFL's. I was thinking about testing them on one of my Inverters I have for custom PC use, if...Leave a comment:
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Re: Inverter tester using old CFL
Is this also true for the 6 CCFL's models such as the 2407WFPb?
Also, do you think those UV CCFL's would work too? I am an old school computer enthusiast who's been custom building rigs for 30+ years and I have lots of UV type CCFL's, the kinds you use to make PC's look nice and glowing. The one I was thinking of trying is at the link below.
[url]http://www.frozencpu.com/products/10439/lit-196/Logisys_4_Cold_Cathode_Replacement_Tube_-_UV.html[/url]Re: Inverter tester using old CFL
...Leave a comment:
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Re: Dell 2407wfp - No power
@budm,
I too have an issue with my 2407wfp. My readings are pretty much the same on CN701 and CN702, except I get 3.000v on pins 3. Is this wrong perhaps? Thanks
CN702:
1 = 0V
2 = NC
3 = 3.00V
4 = 18.9V
5 = 18.9V
6 = 18.9V
7 = 0V
8 = 0V
CN701:
1 = 0V
2 = NC
3 = 3.00V
4 = 18.9V
5 = 0V
6 = 0V
7 = 18.9V
8 = 0V
9 = 0V
10 = 0V
11 = 0V
And I too get 18.9v...Leave a comment:
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Re: Dell 2407wfp - No power
Old thread I know, but still I am curious if you ever managed to repair your Dell monitor? Since you never did post any more replies it makes it seem you gave up on it. If not, what did you learn about your Dell 2407wfp?
I am in research and planning phase to repair mine, so please understand why I am asking.
Rod...Leave a comment:
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Re: 2405FPW 2407WFPb 2407WFP Preventative measures
I am surprised no one ever replied to this question. If you ever find my reply, what did you eventually do with these displays?
My 2407WFPb died finally after 11 years. I am currently in planning phase to repair it but I am trying my best to stay as cheap as possible considering you can replace the entire thing for only $50. I only found Elite on mine.
My monitor still powers on, lots of caps bulged on the video board, but the power buttons and leds etc still function as usual, but all 6 CCFL's do not power...Leave a comment:
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Re: Dell 2407WFPb Monitor - Bad Cap
I plan on doing the exact same thing too. Since the LEDs still come on, and I have at least 4 or 5 caps badly bulged on the video board I have to assume this board is at fault.
However, if anyone could point me to a common list of suspect components to replace on the PSU I would highly appreciate it. I might as well solder on higher quality pieces while I have this monitor apart, right?...Leave a comment:
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Re: Dell 2407WFPb Monitor - Bad Cap
I am interested in seeing this too. Seems like AdrianM tried to explain it, but his pics and explanation are too vague. My 2407WFPb still comes on, buttons work as usual, turns amber to green etc, but no display. It went from zero issues to suddenly no display after 11 years of trouble-free operation. Not sure if the PSU is bad or not, or if the inverter or ccfl's have gone bad. Although I am a good at soldering, I also see that this psu is only 12.99 brand new. You could replace it, get your monitor back up and running (assuming...Leave a comment:
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