Schematics attached
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I have bought a not complete and defective Dell Latitude 5520 for parts (needed the networkconnector (RJ45) to repair a other board).
Have repaired the other board (Dell Latitude 5540) and I wanted to know if I could find out what is wrong with the 5520 board (SouthPeak15 TGL MB 8L 19819-1) and perhaps repair this one also.
After connecting the USB-C charger (both USB-C ports on the laptop, does not have an other option) and pressing the power button, nothing happens (no lights or fans, no capslock).
Have checked with a thermal camera, and there are a couple of things... -
Certainly! Here's a revised version of your text:
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I own a Marantz NR1601 receiver, but unfortunately, I'm experiencing an issue with no sound coming from any of the outputs. I'm seeking assistance to identify the most likely cause of the problem.
The unit powers on without any issues and seems to be functioning properly. I've noticed that the relay clicks after about 10 seconds, indicating that it's going through its startup sequence. There are no visible signs of damage, and I don't detect any burnt smells.
While the schematics provided... -
Might have some liquid damage (from > 1 year ago, was completely fine until a month ago) - unable to notice anything wrong easily on the motherboard (Core i7, GPU MX250, UX481FLY). I have cleaned parts of the motherboard with some oxidation with solder and flux - did not help.
Laptop does turn on sometimes and is fully functional. However, while it is fully functional - (1) If rebooted, most of the times it enters a restart loop with blank screen (2) Sometimes, it crashes by itself and enters restart loop - with no relation to CPU/GPU load, heat, etc.
I found that If I remove the...07-06-2025, 12:31 AM -
Hi,
I have this laptop for a long time, still it does it's job, like browsing, word , excel. Two years back laptop Hinge base broken but now it's damaging other parts of laptop so I tried to totally remove the embedded display cable from laptop and tried to boot only with external display monitor, but it doesn't boot and gives single beeps. BIOS checking the embedded display to be connected.
So checked the schematics to bypass this issue.
Found something but I don't know how to read this schematics.
Dell 3537 mobo 9982p rev 3
Schematics attached,... -
Hello , for some time I was studying Quanta U9x/8x schematics and the option to use both type of screen (LVDS 40 pin / eDP 30 pin).
In some cases to use LVDS screen PCB use converter IC RTD2132/6
Now I found an HP 15 F series U99 mainboard with RTD chip not populated and LVDS 40 pin lcd touch screen
at the same time I have another HP 15 N series with Quanta U92 mainboard and RTD2136 with eDP 30 pin lcd screen (no touch).
Maybe someone more experienced in the subject can clarify if is posible to change type of screen used with some resistors / bios options change.
...11-25-2023, 09:31 AM