Where did you find this? It had the values I needed as well.
PR258 = 100k Ohm 0402 1%
PR261 = 24.3k Ohm 0402 1%
PR265 = 20k Ohm 0402 1%
PR271 = 31.6k Ohm 0402 1%...
Astray
Member
Last Activity: 04-14-2025, 07:32 PM
Joined: 04-14-2024
Location: Gainesville, FL
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This is EXACTLY what I needed. Thank you so much!
There's an extra 200 ohm resistor that doesn't exist on my board but the other measurements completely line up. Hopefully I can report back with a successful repair soon....Leave a comment:
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Hey there, were you able to measure the resistors yet?...Leave a comment:
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The TI1225 was cheap enough that I just bought it to replace regardless just to be safe for the repair.
I got two of each of each chip, and had the ENE preprogrammed and ready to go, though MSI built in an EC reset function so it might even have a chip somewhere that will auto program the ENE if it's functioning properly?
And good thought about the resistors, but wouldn't that only matter if they're in parallel with other resistors? If they're not then the values should be okay I would think right? The resistors have already been removed from the board regardless because...Leave a comment:
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That would be extremely helpful, thank you so much!...Leave a comment:
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Anyone else possibly have information on these resistance values? I'm getting desperate lolLeave a comment:
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Does anyone have the schematic for the MSI GS75 (9SG 242 US)? The boardview for the MS-17G11 is close enough but I can't find a schematic for looking up resistance and capacitors values anywhere.Leave a comment:
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I actually checked a schematic of another MSI laptop board (MS-17F2) with this component beforehand and the resistance values in the schematic were different from what I'm measuring on these resistors unfortunately so that doesn't seem like a viable alternative.
There's a 100kOhm on the SUS_ON net (pin 6 and pin 20) which matches the 101kOhm I have, but the resistor for pin 1 is 130kOhms on that schematic and I have a 24.3kOhm resistor. The other resistors seem in line but are different mine as well at 10kOhm for Pin 2 to Gnd (31.6kOhm for PR271 is what I measured) and 15.4kOhm from...Leave a comment:
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So I removed a 3V/5V LDO (TPS1225C) from my board but accidentally bumped many of the smaller resistors near when removing and now I have no idea which one is which and they all have different values. I'm fairly certain 2 are in the correct location because they didn't move too much (not 100% though), but the other two I have no idea. One is 101kOhm and the other is 24.3kOhm. I have the board view of this motherboard but it doesn't have the resistance values. Need the resistances on PR258, PR261, PR265, and PR271. Anyone know where that info might be available? There's no schematics for this particular...
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Do you have the resistor values near PU26 (TPS51225C) on the boardview? Specifically PR258, PR261, PR265, and PR271? I displaced mine when I removed the TPS51225C chip for replacement....
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Hello again!
Sorry I kind of let this thread die, I've been busy IRL and also needed to acquire equipment and parts to do this repair.
I checked PR251 and confirmed there's no short there.
I checked +3VALW on PC225 and found no voltage there as expected. There wasn't a short on Pin 3 of PU26/PC225 either.
Resistance of PL19 Pin 1 (SW_3V3) and Pin 2 (+3VSUS) was 2.18k ohms to the ground pin of PC225. If I tried using the grounded plated screw holes I did get different resistance values around 350 ohms on both pins some how depending on which screw...Leave a comment:
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I understand that he has assisted me but isn't this supposed to be a place to learn? How do I identify which rails are which when I don't have a schematic? Can you direct me to a post or something that teaches me how to identify the rails and components I need to be testing?
Everyone has to start somewhere. I still need to get a hot air station or be very careful with my heat gun so I can remove the chips as well. Again, I am completely new to this level of repair and I want to learn so please bear with me.
I found a large resistor with R005 on top of it near the power...Leave a comment:
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Hi, thanks for sharing that information! I'm sorry but I'm pretty new to this and unsure what the current sense resistor PR251 is or where to find it on the board (or what CN11 is). Also don't know what +3VALW is (I'm assuming some kind of 3V power rail), what PU26 is or PC225 so if you could clarify or point in the direction of somewhere I could learn I would appreciate it.
Also some additional information I obtained after using my thermal imaging camera, there's a very small chip that is getting incredibly hot (the EC is also becoming fairly warm but not nearly as hot as the smaller...Last edited by Astray; 04-14-2024, 08:36 PM.Leave a comment:
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Well it was working prior to the LCD screen replacement so I'm guessing me doing that replacement without disconnecting the battery caused some kind of short somewhere and blew it up, unless I was just really unlucky with the timing here and it's a huge unfortunate coincidence.
Either way that is likely the culprit I'm guessing, but I'm worried something else may have been damaged once the IC died, or whatever caused the IC to die needs to be fixed before replacing the IC.
Not sure what connections I should be testing nor what locations and values I would need to be...Leave a comment:
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Here's a photo of it. The mark is so small but before I took off the kapton tape there was a bubble in the tape right where that one mark is in near the center of the chip. ...Leave a comment:
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MSI GS75 No Power
Hello, working on a laptop (MSI GS75 9SG-242US, Core i7-9750H, 2080 Max Q) and after replacing the screen and forgetting to disconnect the battery prior, I have no visible indications of power anywhere. It was working perfectly fine prior to the screen removal and replacement. Checked the motherboard PCB visually near the LCD connectors and didn't really see any indications of damaged surface mounted components but haven't looked under a microscope yet.
Battery charging light isn't turning on when plugged in and pressing the button does nothing regardless of being on battery power... -
Hello,
I'm mainly here to learn about repair for electronics. I've always been a big fan of doing my own repairs when possible and enjoy learning more information and becoming more capable at repair.
I've been working with computers since I was very young and ended up getting a degree in Computer Engineering to help further my knowledge about computers even though most of my work experience is in IT.
Still haven't quite a made a decision about which career path I'm going to go down either lol.
I feel like I've learned a lot of information about electronics,...Leave a comment:
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