More spare parts! Last week I paid $140 for two 17-inch Dell Inspiron laptops. One had broken hinge screw mounts, and the other one had a dead PCH on the motherboard, so I swapped motherboards and added the extra parts to my stash.
Hello. a) If you remove (desoldering) that small ceramic capacitor and then measure Pin 9 on the Super I/0 with respect to ground, that is, place the red tip on pin 9 and the black one to a known ground (screw hole and/or the metal chassis of a USB port): Does it no longer indicate a short circuit? b) On the PU801 (6 pin smd IC) with the multimeter in diode test: Black meter tip to pin 2 and red tip to pins 4, 5, 6, 1 and 3 (one by one) No reading indicates short circuit? c) Are the 5V always present? To run the heat sink fans that protect the chipset. Another way to say it, although the chipset shows an image that it is running hot, the camera temperature I saw was 15 Celsius because the current injected was 100 mA. If, upon increasing the current to 500 mA, I had seen a temperature of 55 Celsius or higher, I would say that the probability that the chipset itself was damaged is very high. In other words, I suspect the Super I/O IC that, since it does not have 1.8V on pin 9, it does not send the order to activate the chipset. Thanks for sharing. All the best.
Hi Carlos, thanks for taking the time to make a detailed comment. I should have clarified in the video that I started injecting very low, but brought up to about 3A at 1.8V by the time I took that recording with the thermal camera. With my thermal camera, there is an offset between the thermal camera and the real camera, which can lead to confusion as to which component is getting warm - I may be carrying out some plastic welding to cure this! I brought it up to the full 5A in the hope of conclusively determining the fault component by touch, but even with 5A going through the board, nothing was getting warm. Santa is bringing me a 10A power supply on the 25th - well I asked for one anyway.
Watching the Thermal Camera, the chip burning seems to be the small chip near the Battery connector... and seems to be the Bios Chip.. Not Chipset.. but don't have the schematics... 🤔
Unfortunately there is a bad offset with the cheap thermal camera I have. I eventually put the full 5A in to the short and it is only the chipset that gets warm. :-(
Hi, sorry I thought I had already responded to this comment. I was not able to resolve this issue for my laptop as the chipset was blown. However this may not be the case for you. If you follow through the same steps that I did you should be able to find out what the problem is. Hopefully the issue will be something simple to fix.
Great video again. Thank you!
❤🎉 excellent work.
More spare parts! Last week I paid $140 for two 17-inch Dell Inspiron laptops. One had broken hinge screw mounts, and the other one had a dead PCH on the motherboard, so I swapped motherboards and added the extra parts to my stash.
Hello.
a) If you remove (desoldering) that small ceramic capacitor and then measure Pin 9 on the Super I/0 with respect to ground, that is, place the red tip on pin 9 and the black one to a known ground (screw hole and/or the metal chassis of a USB port): Does it no longer indicate a short circuit?
b) On the PU801 (6 pin smd IC) with the multimeter in diode test:
Black meter tip to pin 2 and red tip to pins 4, 5, 6, 1 and 3 (one by one) No reading indicates short circuit?
c) Are the 5V always present? To run the heat sink fans that protect the chipset.
Another way to say it, although the chipset shows an image that it is running hot, the camera temperature I saw was 15 Celsius because the current injected was 100 mA. If, upon increasing the current to 500 mA, I had seen a temperature of 55 Celsius or higher, I would say that the probability that the chipset itself was damaged is very high. In other words, I suspect the Super I/O IC that, since it does not have 1.8V on pin 9, it does not send the order to activate the chipset.
Thanks for sharing. All the best.
Hi Carlos, thanks for taking the time to make a detailed comment. I should have clarified in the video that I started injecting very low, but brought up to about 3A at 1.8V by the time I took that recording with the thermal camera. With my thermal camera, there is an offset between the thermal camera and the real camera, which can lead to confusion as to which component is getting warm - I may be carrying out some plastic welding to cure this!
I brought it up to the full 5A in the hope of conclusively determining the fault component by touch, but even with 5A going through the board, nothing was getting warm. Santa is bringing me a 10A power supply on the 25th - well I asked for one anyway.
Watching the Thermal Camera, the chip burning seems to be the small chip near the Battery connector... and seems to be the Bios Chip.. Not Chipset.. but don't have the schematics... 🤔
Unfortunately there is a bad offset with the cheap thermal camera I have. I eventually put the full 5A in to the short and it is only the chipset that gets warm. :-(
How were you able to fix it at last pls? I'm experiencing this same issue on my HP 250 G8 laptop.
Hi, sorry I thought I had already responded to this comment. I was not able to resolve this issue for my laptop as the chipset was blown. However this may not be the case for you. If you follow through the same steps that I did you should be able to find out what the problem is. Hopefully the issue will be something simple to fix.
RIP
RIP to my €56.50 as well :-(
sadness. i was thinking bios because of the 1.8 but thermal showed it. better luck next time.
can't win 'em all sadly
hI THANK YOU cOULD YOU SHARE TO US repair controller e bike
Hi, thanks for watching. I have never been sent anything like an e-bike controller to repair, but if I do I will certainly make a video. thanks.
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