What is the square metal grid-looking part in the middle of the motherboard and what does it do?

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1.6 SAT Math - Special Rules for Grid-Ins ' DOME Prep

domeprep.com/sat-act-prep/sat-course/on.../special-rules-for-grid-ins
Grid-ins are the questions in which you bubble your own answer. ... numbers must be gridded as improper fractions; Decimals can be rounded or truncated (cut ...

Grid-ins Sample Question 1 - Math.com

Look close at the grid and the glass for any breaks in the foil. If you find any, go to an autoparts store and get a repair kit. The kit is like a finger nail polish that has metal in the paint. You paint a thin line over the foil that is broken.

The HP Pavilion dv97072ea Notebook PC?

http://h10025.www1.hp.com/ewfrf/wc/product?product=3308945&lc=en&cc=us&dlc=en&lang=en&cc=us

Nope.
Doesn't use the MXM technology, with using a separate graphics ->adapter card.
The graphics chipset (GPU) is soldered directly to the motherboard. (GPU on a small circuit board, that is)
It's Integrated Graphics,

http://www.ascendtech.us/hp-434659-001-dv9000-laptop-motherboard_i_mbhp434659001lm.aspx

Scroll the page down to the larger photos.

The Nvidia GeForce GO 7600 mobile graphics chipset, is the darker OD green circuit board. (Generally speaking)
In the views you are looking at the TOP of the motherboard.

You see the white rectangular Processor socket, with the square hole in the middle.
Next to it is a green square circuit board, and next to that is the darker, Olive Drab green square circuit board, that is the Nvidia GeForce GO 7600 graphics chipset.
{Circuit board and GPU, is referred to now as the graphics chipset.
That is why I stated - Generally speaking, above }

[GPU,

http://en.wikipedia.org/wiki/GPU ]

You can see the Nvidia GeForce GO7600T chipset, and circuit board, more clearly here,

http://www.ebay.com/itm/100-new-nVIDIA-GeForce-GF-GO7600T-N-B1-GPU-BGA-IC-Chipset-with-Balls-/190698089722?pt=LH_DefaultDomain_0&hash=item2c667decfa

It's mounted to the motherboard with a BGA surface mount.
Ball Grid Array.

To explain the Ball Grid Array surface mount, simply;

In the photo of the chipset in the Ebay link above, you are looking at a green square circuit board, with an Nvidia 7600 GO, mobile graphics chipset, in the middle. You are looking at a TOP view.

http://en.wikipedia.org/wiki/Comparison_of_Nvidia_graphics_processing_units#GeForce_Go_7_.28Go_7xxx.29_series

The GPU ->Nvidia GeForce GO 7600, is mounted to the green circuit board.
The bottom of the green circuit board has Solder Balls.

The Solder Balls take the place of Contact Pins.
(Contact pins, such as on the bottom of an Intel Pentium 4 processor, that uses a Socket 478 processor socket)

On the motherboard are matching Copper Pads.
(The copper pads are coated with a gold plating)

The Nvidia graphics chipset is set down on the motherboard, with the Solder Balls lining up on the matching Copper Pads.
Heat is then applied at a specific temperature, and length of time.

This action makes the solder balls melt, and solders the Nvidia GeForce GO 7600 to the copper pads.
(Which in turn solders it to the motherboard)

This demonstration of a BGA Rework Station, shows you more about the above technique,

http://www.ersa.com/art-ir-pl-650-346-1472.html

Go down towards the bottom of the page, and click on the Red -
Take a few minutes to view the IR 650 demo video. (5 minutes)

Just for edification;
If it indeed did use the MXM technology, and a graphics adapter card for a laptop, that is based on the Nvidia GeForce GO7600 GPU, it would look like this, and plug into an interface, (Connector) on the motherboard,

http://www.ebay.com/itm/nVIDIA-GeForce-Go7600-Go7600-N-A2-G73M-DD2-256MB-MXM-II-VGA-Card-35G1P5310-10-/330758557353?pt=PCC_Video_TV_Cards&hash=item4d02bf0ea9

(There is also a model with 128MB of graphics memory, besides the 256MB model shown above)

More in a Comment. Don't give up on increasing graphics 'power', just yet............................

Hello,

I thing the main computer is located on the chassis. Not sure where it is different on some cars than others. Look for a square metal box about 4 inches square.

HTH

This is a common problem. Its called a convergence failure.

Problem #1) Convergence

Symptoms:

• Screen Looks 3D
• Colors wont align
• Video may look distorted

Problem #2 CRT Fluid has clouded over. Symtoms

• Dull looking video
• White looking video
• Halos around objects
• Red/Orange looking video

You can see some examples and find a fix here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

If you look on the left hand side of the top plastic bit you will see what looks like 3 holes. You have to place metal bit to match up with the central hole but in the other half. The smaller side fits in a perfectly sized hole.

with no model or make, all i can suggest is that one of the convergence amplifiers is acting up(usually there are two used in most rear projection sets) they may have to be replace at the same time to avoid doing the same thing later on. look for a heavy metal heat dissipator tha is where they usually mount.

on the cap the contact points inside will look coroded--not square edges and burnt spots where the rotor fires against,the rotor will look burnt on the tip and have rounded edges(in other words all metal parts in the cap and just the thicker metal on the rotor)the really shinny metal on the rotor will be black in spots where it connects to the cap in the middle but doesnt always go bad there

yes..this is particularly a delicate operation. do you have a magnifying glass and small pliers..

Sounds like an inverter problem. If the power supply is internal replace the capacitors coming out of the voltage regulators. These are usually 1000mf and/or 470mf. If that doesn't do the trick look up the numbers on the 8-pin chips that drive the secondary transformers on the inverter to see if they are getting the right voltages.
Good Luck!