Question about MSI K9MM-V Motherboard

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Warking principle of VRM circuit

No power

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Http://www.msi.com/product/mb/K9MM-V.html

The Voltage Regulator is the Motherboard Voltage Regulator circuit, which is built into the motherboard, and not a separate module.
Therefore not replaceable as a single unit, but at individual electronic component level.

The Radial Aluminum Electrolytic Capacitors, that surround the processor socket are part of the motherboard voltage regulator circuit.

General example,

http://www.amazon.com/Gino-Radial-Aluminum-Electrolytic-Capacitors/dp/B006228QMY

There are 6 of these capacitors on the left side of the processor socket. These deal with the processor.

However there may be more capacitors involved in the motherboard voltage regulator circuit, and specifically for the processor, but are Not close by.

There may be more in outlying areas, away from the Processor socket.
Found by tracing the circuit traces on the motherboard, from processor socket to capacitor.

The black 'small boxes' to the left of the processor socket, are also involved in the motherboard voltage regulator circuit.
These are Ferrite Chokes.

For more information on the motherboard voltage regulator circuit,

http://www.hardwaresecrets.com/article/616

Visual signs of capacitor failure,

http://capacitorlab.com/visible-failures/index.htm

For additional questions please post in a Comment.

Regards,
joecoolvette

(Voltage for Processor, and Ram Memory are adjustable in BIOS Setup, to my knowledge)

Posted on Nov 02, 2012

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1 Answer

Diagram of vrm section


Intel D845GVSR,

http://www.ebay.com/itm/Intel-D845GVSR-Socket-478-Motherboard-Gateway-E-2100-/380449645479?pt=Motherboards&hash=item589490e3a7

http://www.intel.com/p/en_US/support/highlights/dsktpboards/d845gvsr

Doesn't have a Voltage Regulator Module.

It has a motherboard voltage regulator circuit. It is integrated into the motherboard, not a separate module.

You will have to find the components, in the motherboard voltage regulator circuit, yourself.

How?

http://www.hardwaresecrets.com/article/616

http://www.capacitorlab.com/visible-failures/index.htm

http://www.hardwaresecrets.com/article/How-to-Identify-Japanese-Electrolytic-Capacitors/595

http://www.mouser.com/Passive-Components/Capacitors/Aluminum-Electrolytic-Capacitors/Aluminum-Electrolytic-Capacitors-Leaded/_/N-75hqw/

Radial Aluminum Electrolytic Capacitor

http://www.youtube.com/watch?v=KN6_-8fYHo0

Starts at 0:04

Electrolytic Capacitors are the weakest link in the motherboard voltage regulator circuit.

Part of what the motherboard voltage regulator circuit does, is to regulate voltage for the Processor.
Just like a VRM does.

A Processor has to have a steady, 'clean', supply of voltage, and it MUST be within a VERY small tolerance range.
Cannot be too much, or too little.

For additional questions please post in a Comment.
Regards,
joecoolvette

Jun 28, 2012 | Intel D845GVSR Motherboard

1 Answer

Turns on and off and no display


there is short circuit in motherboard if your adater have small led and if LED off when you inseting power jack that means short circuit in dc to dc controller or VRM section on your motherboard

Feb 01, 2010 | HP Compaq nx6310 Notebook

3 Answers

Its not booting and the Leds VRM and NMI are with amber color


VRM and NMI lights lit usually indicate an issue with CPU #2's VRM which can be replaced. Also check 5 lights on back middle of system. If VRM light is lit here remove CPU 2 and VRM and reboot system. If system boots, this was the issue...

Apr 25, 2009 | IBM eServer xSeries 346 8840 (884022U)

1 Answer

4 pin plug 12volt on the motherboard.


pls you have to identify which area is short circuit, there for remove the 4 pin plug and power on. of power on ,it is telling your cpu section (VRM Circuit is short) it may faulty cap or transistor , bit I found more than 80% is shorted north bridge.
it was not fixed. but you have to test all coils to identify which section mos fets are short, remove the cpu to isolate north bridge , check vrm circuit,
images?q=tbn:and9gctvnhhmvqm60iuldruuri-bndxickpzhgxm7juwfsizc3gdj9_-4a

Aug 26, 2017 | Intel D945GTP Motherboard

1 Answer

Adding second CPU


Hi

Did you receive a VRM with the the PRC upgrade kit? And have you installed it?

The following items are/should be included in a microprocessor upgrade kit:
• A microprocessor (PRC)
• A heat sink
• Heat-sink retention clip(s)
• A voltage regulator module (VRM),
Your upgrade kit may also include a cooling fan.

If you are adding a secondary microprocessor, examine the VRM to ensure that it is the correct VRM for your system. Install the VRM in the appropriate secondary VRM connector, ensuring that the latches at each end of the connector engage. If you received two VRMs with the upgrade kit, replace the primary VRM already installed in the system with one of the VRMs from the upgrade kit.
Note: The system does not support mismatched VRMs.

Check PE1600sc Microprocessor Upgrade Installation Guide - http://support.dell.com/support/edocs/systems/pe1600sc/multlang/proc/9D904A05.pdf

Let me know how you get on

Mike

May 13, 2008 | Dell PowerEdge 1600SC Server

1 Answer

Your solution re motherboard


"voltage regulator module" thats have next to core voltage connector it's supply to cpu
cpu need 2 volt 45 amp and our power supply can produce voltage 12 volt 3 amp so motherboard can produce more amp for cpu . 6 mosfet using for this process it's near by cpu

Apr 11, 2008 | Intel Motherboard

1 Answer

Ga-7N400E powerup problem


VRM Circuit problem found there
disconnect only core voltage connetor and power on motherboard
if motherboard on so confirm that your vrm circuit is sort

replace vrm circuit mosfet

Feb 23, 2008 | Gigabyte GA-7N400E-L Motherboard

1 Answer

The vrm for my 3500m20


i am using a compaq vrm for my 3500 m20:
the number is:
320266-01
spare:329267-001

this one works!!

Sep 14, 2007 | IBM Netfinity 3500 M20 8657 Server

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