I have a dell 1504fp monitor. Once I connect it to a computer and power it on it displays the normal Dell welcome screen message but there is no input signal from the computer. What could be wrong with it? Which components do I check?
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Re: dell 1504fp no input signal
Just a little more information please!
When you have the monitor turned with a signal applied what is the power LED doing?
Dose it indicate a signal?
Can you turn the monitor on and off with the front power switch?
We really need to see some pictures of what you're working on.
A straight down shot of top and bottom of the boards, and in focusWhatever I do, I consider it a success, if in the end I am breathing, seeing, feeling and hearing!
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Re: dell 1504fp no input signal
With a signal applied I turn on the monitor. The power on LED is orange, it then turns green and instead of displaying the input from the computer it displays the normal Dell RGB message.Comment
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Re: dell 1504fp no input signal
Try a different VGA cable,If that doesn't work hook up to a different computer.
Also Make sure you have the correct resolution selected.Whatever I do, I consider it a success, if in the end I am breathing, seeing, feeling and hearing!Comment
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Re: dell 1504fp no input signal
I found a FET the MTP2955V FET had a dry joint. I resoldered it and lowered the resolution on my PC, the monitor now works fine. I was using a resolution of 1280 by 1024 the 15" screen will only take 1024 by 768.Comment
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Hi everyone,
Looking for some advice or opinions on what to do with a monitor issue I’ve run into. Apologies in advance is this crossovers a few forum categories.
I have a Dell U3425WE, which I've recently replaced with another model. That said, the original unit is still fully functional in terms of the display — it works perfectly over HDMI and DisplayPort. However, the USB-C and Thunderbolt 4 ports have stopped functioning correctly. The Issue:- The 90W Thunderbolt 4 port (circled in the photo) no longer charges or powers any device, including laptops or MacBooks.
- There’s
07-15-2025, 04:55 AM -
My pc:
10850K stock 4800mhz stock Kraken X73 good temps
2x16 GB DDR4 GSKILL 3000mhz XMP
Seasonic Tx-850 Ultra Titanium
Gigabyte Rtx 3090 Gaming OC
Aorus Z490 Pro Gaming
1 TB SSD
4 weeks ago i launched Metro Exodus Enhanced and during cinematic advertisement part ( 30 fps ), pc just shutdown.
Also monitor flickered with NO SIGNAL 10 seconds after shutdown. So only monitor and pc was affected.
Next i pressed only power button, rebooted again and its fine again. Happened once and i cant reproduce.
Power... -
My question pertains to understanding the control circuity inside a Dell PT434 type battery used in Dell E6400, E6410 and other Dell notebooks?
Does anyone have a circuit diagram for the inside of a Dell PT434 battery and/or a description of how the control lines work to control this battery?
My reason for asking is I have a battery which I cannot get to charge beyond 1% in a Dell E6410 or E6400.
The LED bar graph charge indicator on the battery shows one LED lighted when the info button is pressed.
I have tried multiple different Dell power adapters. My Dell... -
Normally, I never post repairs this quick after I do them, because… I am usually very slow.
But today, I’m making an exception here. Why? No idea. Perhaps only because the repair details are still “fresh” in my head… which is ironic, given this is a 16 year old monitor that hardly anyone will care about today. It is new to me, though. 
I picked it up last November from someone on my local Craigslist. It wasn’t very close to where I live, but was close to a family friend that I had to go visit anyways. So after watching the posting on Craigslist for a few weeks and seeing it getting...
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Hello everyone,
I have been having some difficulties reviving an old Dell 2408WFPb PC monitor that I received for free. When I first acquired it, the backlights of the display were on but alas no image was showing. After extensive research on the topic, I went ahead and purchased a new t-con board for the monitor. After installing the board, I was then presented with a new screen that was half black and half green (more so black). I have been unable to figure out what to do next as I have limited knowledge of display electronics. Might anyone on this forum have an idea of what may...
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