bosscharles
Senior Member
Last Activity: 06-01-2024, 12:41 PM
Joined: 03-13-2013
Location: BRISTOL
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Unsure if those readings where accurate, I had to change the batteries on my multimeter as they were low and giving erroneous readings. When I try to do the readings you ask, all resistance readings are fluctuating? Also, would this IC cause the light on the charger to turn off as soon as it is plugged in and the battery is also connected to the motherboard? It feels like that sort of thing is a short of some sort? -
[B]source (1-2-3) & drain (5-6-7-8) - 1.7k
source (1-2-3) & gate (4) - .03K
gate (4) & drain (5-6-7-8)[/B]-[B] 1.5K[/B][B]source (1-2-3) & drain (5-6-7-8) - 1.7k
source (1-2-3) & gate (4) - .03K
gate (4) & drain (5-6-7-8)[/B]-[B] 1.5K[/B][B]source (1-2-3) & drain (5-6-7-8) - 1.7k
source (1-2-3) & gate (4) - .03K
gate (4) & drain (5-6-7-8)[/B]-[B] 1.5K[/B]Leave a comment:
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Will work if ac charger is plugged in and battery is disconnected. Machine detects charger properly. Will also work off the battery if I charge the battery on another xps I've got. As soon as I plug in the AC charger, the light on the tip goes out and the machine keeps running off the battery. The only way to get the AC charger working again is to unplug it from the wall socket and then plug back in. Battery tested on other XPS and working fine. It's like somewhere something shorts the ac adapter when plugged in…Leave a comment:
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It is a LA-H331p i7 xps 15 7590 motherboardLeave a comment:
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Removed and reinstalled IC. Charger detected and charging battery! That’s what it says in the bios but the battery is not being charged at all….. If I unplug the charger and then plug back in the light on the charger tip turns off and charger isn’t detected wtf…. About ready to throw this out the windowLeave a comment:
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Battery is known working battery btw… so issue isn’t the battery.Leave a comment:
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Now when I connect the charger to the machine, the white light on the charger tip stays on for a few seconds and then goes off. I need to disconnect the charger from the power socket and then reconnect for the white light to come back on…with battery disconnected, I am able to turn the machine on and Bios detects the charger. If I connect the battery while in the bios, the charger is no longer detected light on charger tip turns off… machine runs off of battery…. Really weird behaviour! Any input welcome..Leave a comment:
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An update, so in the Bios, the charger was being detected and battery charging for a bit, and then it went to no charger detected. It must have done this about 3 times before just reporting no charger installed. Had a look at where ACIN_ISL88783 goes, PR1904, PR1906 & PC1925. This area got very very hot. Once the bios reported no charger, the area cooled off and no longer got hot… Thoughts? Can look to replace those components…. Also now wondering if I soldered the ISL properly, all the legs look fine but perhaps too much solder in the middle and grounding pins..Leave a comment:
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Both look fine, what do I need to look out for? what do these do? They are nowhere close to charging circuitry?Leave a comment:
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Spoke too soon. The charger isn’t detected properly and the battery isn’t charging [USER="295753"]mon2[/USER] can you help me? What else should I look out formon2Spoke too soon. The charger isn’t detected properly and the battery isn’t charging [USER="295753"]mon2[/USER] can you help me? What else should I look out forLeave a comment:
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i noticed for some reason when exerting pressure on the ssd bracket the machine would show signs of life…. Look what I found! Someone used wrong length screws
will run a wire to fix the trace….Leave a comment:
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Thanks for the insight will do. Anybody else out there that has faced similar symptoms on these XPS 13 machines, if so, how did you fix?Leave a comment:
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Dell XPS 13 9360 intel 7th gen No power
Hi all, looking for some help. Board is completely clean, as is the rest of the machine, battery is healthy and charges fine on other machine. The machine is completely dead however did power up yesterday and reported an 3 amber 1 white led sequence which is dying cmos battery. Got into bios, charger detected, main battery charging etc. all looked fine. Powered down, Put another cmos battery in from another machine and it’s dead again, no power.
Ordered a brand new CMOS battery to see if that helps but not holding my breath. Have done the whole disconnect battery and CMOs battery,... -
Hi all, Intersil chip arrived from China today. Replaced the old chip and the machine is up and running. Many thanks all!!!Leave a comment:
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Ordered from Aliexpress. Will report back in a week or two once it has arrived. Out of interest, what voltage readings should I be getting at VDD & VDDP? Thank you!Leave a comment:
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Rechecked [B]VDD[/B] is 0V, checked [B]VDDP[/B] pin 8 which is 0V too, in Diode mode got a beep on pin8. [B]PR1908[/B] is open/infinite. Looks like I need to change that resistor. I'll harvest. from another board. Schematic says 4.7ohms, what voltage rating would it be?Rechecked [B]VDD[/B] is 0V, checked [B]VDDP[/B] pin 8 which is 0V too, in Diode mode got a beep on pin8. [B]PR1908[/B] is open/infinite. Looks like I need to change that resistor. I'll harvest. from another board. Schematic says 4.7ohms, what voltage rating would it be?Rechecked [B]VDD[/B] is 0V, checked [B]VDDP[/B] pin 8 whichLeave a comment:
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Readings as follows:
[B]ACIN[/B] pin #19 3.5v
[B]DCIN[/B] pin #17 19.2V
[B]VDD [/B]pin #18 0VReadings as follows:
[B]ACIN[/B] pin #19 3.5v
[B]DCIN[/B] pin #17 19.2V
[B]VDD [/B]pin #18 0VReadings as follows:
[B]ACIN[/B] pin #19 3.5v
[B]DCIN[/B] pin #17 19.2V
[B]VDD [/B]pin #18 0VReadings as follows:
[B]ACIN[/B] pin #19 3.5v
[B]DCIN[/B] pin #17 19.2V
[B]VDD [/B]pin #18 0VReadings as follows:
[B]ACIN[/B] pin #19 3.5v
[B]DCIN[/B] pin #17 19.2V
[B]VDD [/B]pin #18 0VReadingsLeave a comment:
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Hi mon2, thanks for getting in touch. I do have fine tip probes, tried both pin 24 & PR1921. Reading is 0V. Does that point to PU1900 failure? Shall I replace the intersil chip.Leave a comment:
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Also, nothing seems to get warm/hot as there is no amperage running through the system...Leave a comment:
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Thanks, they visually look OK, no holes or scorch marks. How can I test them?...Leave a comment:
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