MSI MS-17F51 Chip

[asdas09]

Anyone know it is this the bios chip or someone other? It's burned. No available boardview or schematic for MSI MS-17F51.

I checked the MSI MS-17F31 boardview and there is added the info "TSSOP8" for chips of this size.

MOD Edit, Link to boardview -> https://www.badcaps.net/forum/showthread.php?p=1268604
Reminder: rules and organization of this section -> https://www.badcaps.net/forum/showthread.php?t=117483
.

[ResoluteHawk]

Re: MSI MS-17F51 Chip

Your BIOS chip is U37. It's located above and to the right of the PCH/Chipset (the big chip on the left side of your photo).

If the chip in the first photo is the same chip as the chip in the 2nd photo, it looks to be a USB load switch.

What problem are you running into exactly? Is the system not powering on? Not posting? USB ports not working?

If that chip is burned I would take it off to start with.

[asdas09]

Re: MSI MS-17F51 Chip

I removed that burned chip. I can replace to this any the tssop-8 USB load switch chip? Example. https://www.digikey.com/en/products/...4-1YMM/1028557

[asdas09]

Re: MSI MS-17F51 Chip

Still the system won't turn on, fan won't spin, no light etc... When connect to the charger and check with a thermal camera, you see that this chip (PU5) WQFN20_TSMDQ63 soon very hot about 50°C.
This chip also bad because it is so hot? What I also know is that SW_3V3 / +3VSUS is shorted.

[ResoluteHawk]

Re: MSI MS-17F51 Chip

PU5 looks like your 3.3v/5v buck converter.

Speaking from experience here; if this chip heats up when power is plugged in, it usually means that your Super IO chip (U22) is fried.

Just because PU5 heats up does NOT mean that the chip is bad. To verify that your 3.3v/5v buck converter is good, make sure that the input voltage is good (19-20v) on PC59, and make sure that the chip is producing the correct voltages (3.3v and 5v). Check PC65 for 3.3v and PC60 for 5v.

Check for shorts on the capacitors around U22 (C928, C929, C932, C941). 3.3V should be present on each of these capacitors. If a lesser value is present, then your Super IO needs to be replaced.

[asdas09]

Re: MSI MS-17F51 Chip

All shorted U22 (C928, C929, C932, C941).

PC60 - 9v
PC65 - 0.37v
PC59 - 19V
PR116 - 0V
PR79 - 0V

I removed also the burned resistor (PR93). I can replace any resistor that looks like the same original resistor?

It seems that the (U52) chip is also burned because there is a big black mark on it. Shorted capacitors around it C1226, C1240.

[asdas09]

Re: MSI MS-17F51 Chip

Anyone know it is this the bios chip or someone other? It's burned. No available boardview or schematic for MSI MS-17F51.

I checked the MSI MS-17F31 boardview and there is added the info "TSSOP8" for chips of this size.

MOD Edit, Link to boardview -> https://www.badcaps.net/forum/showthread.php?p=1268604
Reminder: rules and organization of this section -> https://www.badcaps.net/forum/showthread.php?t=117483
.

I found what a chip this really is MSOP-8 G547I1. This not added to boardview MSI MS-17F31 because motherboard is little different than MSI MS-17F51. Anyone know, need to be programmed like this chips?

[mon2]

Re: MSI MS-17F51 Chip

This USB load switch does not need programming. It is a fixed max current electronic fuse that will cut off the vbus power rail if the preset current threshold is exceeded. Will reset after the event is removed but often these devices get nuked in the event. More crapware.