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giuspepy

Old gigabyte board dosent post (keyboard controller chip problem)

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Posted · Original PosterOP
6 minutes ago, mariushm said:

No, STOP.

I'll edit this message to add more  but you guys are posting too fast

 

The light brown / cream are capacitors. If you try to measure continuity with a multimeter it will show as open, because that's how capacitors function.

 

When there's no room to put text near a component, often the markings for that component or for a group of components is somewhere else in a rectangle. In the picture, the text for the parts above is in that rectangle to the right of the connector. So, that row of blacker parts is FB39, FB 37 and so on, and the capacitor you circled is probably C87 (what's above C88, C89 etc in that rectangle)

 

Those blacker parts could be fuses or they could be ESD diodes (protections diodes in case you zap the port with static electricity).

 

image.png.fe8c62e664d3355ec9eef8f6b913b05d.png

 

FB could also mean feedback in some context, as in resistor or capacitor used in a feedback circuit. Unlikely to be this in this particular case.

Oh thats interesting.  It does make sense its a protection. 

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Posted · Original PosterOP
1 minute ago, mariushm said:

ok, i finished editing my post.. read and continue ...

Im lost..  What should i do..  Check around the chip? 

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1 minute ago, mariushm said:

ok, i finished editing my post.. read and continue ...

Hey thanks for the info. You're very knowledgeable!. 


 

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Posted · Original PosterOP
Just now, giuspepy said:

Im lost..  What should i do..  Check around the chip? 

Oh right!  I could check the clock pin!!! 

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2 minutes ago, giuspepy said:

Oh right!  I could check the clock pin!!! 

Bro, your thread is HOT!!


 

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Just now, giuspepy said:

What?  Why? 

Cause we post/reply fast :D


 

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Posted · Original PosterOP

I found out also the clock pin goes to the chip.  So bpth data and clock go to this guy. 

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1 minute ago, giuspepy said:

Oh lol

Did you find any fuses to test?


 

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If you cannot find anything bad on the board, it's only about 9 dollars for the part you're looking for. worse case scenario, you gather a bit more soldering skills and more information on how computer motherboards are designed

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1 minute ago, Najila42 said:

If you cannot find anything bad on the board, it's only about 9 dollars for the part you're looking for. worse case scenario, you gather a bit more soldering skills and more information on how computer motherboards are designed

or junk the board and find one that works lol


 

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Just now, ShrimpBrime said:

or junk the board and find one that works lol

or donate the board to someone who'd want to legitimately work on it ;)

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Posted · Original PosterOP
1 minute ago, Najila42 said:

If you cannot find anything bad on the board, it's only about 9 dollars for the part you're looking for. worse case scenario, you gather a bit more soldering skills and more information on how computer motherboards are designed

 

1 minute ago, ShrimpBrime said:

Did you find any fuses to test?

I dident find any other fuses...  

 

Mmm i already have the soldering skills.  I mean im not good at it but i know how to use a heat gun or soldering iron.  

 

Its finding the knowledge of how mobos work there are a lot of different ones

And i couldent find any general info about the architecture..  Of these things

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Posted · Original PosterOP
1 minute ago, Najila42 said:

or donate the board to someone who'd want to legitimately work on it ;)

Bruh.  There are refurbishers who would even buy a broken board.  But this isent even worth it. 

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Posted · Original PosterOP
Just now, giuspepy said:

Bruh.  There are refurbishers who would even buy a broken board.  But this isent even worth it. 

I buyed if to play with it i dident expect that i wouldent work..  This for me is fun.  Trying to find out how to repair it. 

But if i almost rely only on this forum its because i couldent find much information about this stuff

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looks like you should just replace the chip and see if it works at this point. otherwise keeping looking for ICs that appear to have been knocked off or not working, or maybe CAREFULLY try and see what voltages are looking like to relevant chips when it's powered on.

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gotta 4lb hammer thatll fix that board right  up! :P


 

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Posted · Original PosterOP
2 minutes ago, Najila42 said:

looks like you should just replace the chip and see if it works at this point. otherwise keeping looking for ICs that appear to have been knocked off or not working, or maybe CAREFULLY try and see what voltages are looking like to relevant chips when it's powered on.

Ill try replacing the chip.  As looking for the voltages is probably dangerous for the board.  Just saying i will use it as a last resort.  I may short stuff out. 

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Posted · Original PosterOP
1 minute ago, ShrimpBrime said:

gotta 4lb hammer thatll fix that board right  up! :P

Bruh my brother said the same thing!!  Not even kidding

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Posted · Original PosterOP
4 minutes ago, Najila42 said:

looks like you should just replace the chip and see if it works at this point. otherwise keeping looking for ICs that appear to have been knocked off or not working, or maybe CAREFULLY try and see what voltages are looking like to relevant chips when it's powered on.

I also have another question does this need a special psu? Or adapter for the 8pin on the board? 

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Just now, giuspepy said:

Bruh my brother said the same thing!!  Not even kidding

Great minds think alike XD. 

Join us!

Maybe a M80 under it in the back yard.


 

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Just now, giuspepy said:

I also have another question does this need a special psu? Or adapter for the 8pin on the board? 

have you never fully powered the board?

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Just now, giuspepy said:

I also have another question does this need a special psu? Or adapter for the 8pin on the board? 

Dont think so


 

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Lid-less 8700K / Maximus X Hero / G.Skill 4266mhz B-Die / RTX 2060 / Antec 1000w CP series

Ryzen Athlon 220ge with Vega Graphics / Asus Prime B450M-A / Corsair LED 3000mhz / 550w Antec Office PC.

DFI LanParty UT / Opteron 148 / DDR Corsair XMS Expert / X1800 XT 256MB Bios modded

Asus CrossHair Formula IV / Phenom II x4 B97 / Dominator GT 2000mhz. / EVGA GTX 770

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Just now, Najila42 said:

have you never fully powered the board?

wait WUT??

 

like didn't install cpu and ram or no cpu power?!! 😮


 

Lid-less PGA 2700x / ROG B450-I Gaming / Corsair 3000mhz SK Hynix / RTX 2060 / EVGA 750w

Lid-less 8700K / Maximus X Hero / G.Skill 4266mhz B-Die / RTX 2060 / Antec 1000w CP series

Ryzen Athlon 220ge with Vega Graphics / Asus Prime B450M-A / Corsair LED 3000mhz / 550w Antec Office PC.

DFI LanParty UT / Opteron 148 / DDR Corsair XMS Expert / X1800 XT 256MB Bios modded

Asus CrossHair Formula IV / Phenom II x4 B97 / Dominator GT 2000mhz. / EVGA GTX 770

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