Desktop Motherboard Does not Start, Dead, No Power : Check These Things First On ANY MOTHERBOARD

These checks should be the first ones you make on any motherboard that does not power up at all. Use this method on just about any motherboard, old or new, and you should quickly get some idea of where the problem lies so you can investigate further.

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Gran Canaria Uncovered

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TEST METERS
ANENG AN8009 MULITIMETER
KAIWEETS HT118E MULTIMETER
VC480C+ MILLIOHM METER
MESR-100 ESR METER
XC6013L CAPACITOR METER

TM-902C TEMPERATURE METER
LCR-T4 COMPONENT ANALYZER
FNB58 USB ANALYZER
PCI POST ANALYZER
TL460S PLUS PCI_E ANALYZER
TOOLTOP ET120MC2 SCOPE
FNIRSI 1014D SCOPE
NPS3010W 30V 10A PSU
T12 STATION WITH M8 9501 HANDLE
M8 9501 HANDLE
YIHUA 982 Soldering Station C210/C245
FNIRSI HS-02 PORTABLE SOLDERING C210/C245
QUICK 861DW
PROS'KIT SS-331H

INFIRAY P2 PRO IR CAMERA + MACRO LENS
TOOLTOP ET13S THERMAL CAMERA METER
ET13S MACRO LENS
OPTICAL MICROSCOPE
TOMLOV TM4K AF FLEX
TL866 II+ PROGRAMMER
CH341 PROGRAMMER
NC-559-ASM FLUX

DESOLDER BRAID (I use size 8045)
HX-T100 SOLDER (0.6MM)
ESD-11 TWEEZERS

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Thank you
Richard

[chol]

You're great! I'm learning so much on your channel.

[Karthor.]

24:00 I think it says S7-00 at the top and that chip is UP7710M5-00

[GranCanariaUncovered]

It turns out one of the ATX power supplies the customer used had very unstable outputs which were going HH (over voltage) when I connected it to my ATX analyser

[coalme_]

You are correct, it is the 5vsb from atx to 3.3Vsb regulator that powers the superio, it is an APL5315BI-TRL, in the msi the fried component UP0104s fulfills the same function 3vsb, on pin 6

[yasinefendi-sbqz]

it would be great if you use Boardview, but i appreciate the old skol method you use. Nice work!

[marcellipovsky]

Hi Richard, the dead LDO is a Ricoh R1121N371B from the R1121N series of chips. A LOW NOISE 150mA LDO REGULATOR.
PINOUT"
1 - Vout
2 - GND
3 - Vdd
4- CE (chip enable)
5 - NC

[chrishartley]

I can guess what's happened to that voltage regulator. Right next to it is a jumper marked Clear RTC. If the system was powered up with the jumper in the clear position it probably shorts the chip and lets the smoke out.

[davidrobertson]

Onya Dickie, this was interesting tried ASA175 etc and A8A A9A ASM etc. no luck there either

[coondoggcody]

😢 my pc powers up fans and lights come on but no display. I tried to update BIOS and this happened
How can i fix

[MeALot]

Motherboard has a phase for the onboard graphics and the ram, next to the vrm to the cpu.

[pcfred]

The guy probably has one poison pill PSU that's killing everything he connects to it.

[Dutch_off_grid_homesteading]

Heya, that's 2 holes in 1 video nice, but no not really. wel I see some idea's in the comment or are we going in a rabbit hole wel 1 more hole doesn't matter das it richard would like to see a 2st vlog with the ideas in the commants