Ga-7n400 Pro

[keyboardcowboy]

I don have bad caps but I have been hearing a whinning noise from the upper left side of the HeatSink,i have done my level best to locate the source of the noise and i think its coming from either of the three components which i have encircled in the picture below.The noise gets maximum when i run "3d view" in ATITOOL.



I have also recorded the noise, uploaded here

[Per Hansson]

Re: Ga-7n400 Pro

Then it is the coil, ground yourself by holding the chassi and then touch the coil, the noise should stop or atleast change frequency, if it does take a hot glue gun and give the coil a small dab of glue...

[keyboardcowboy]

Re: Ga-7n400 Pro

Already tried that,no use.In other forums they say that it could be the mosfet.

[Rainbow]

Re: Ga-7n400 Pro

What caps do you have there?

[MD Willington]

Re: Ga-7n400 Pro

Cap shorted internally causing excessive load?

I've seen similar on caps on other GA boards on other forums...Purple/Blue with gold stripe but not OST... Though I cannot recall exactly what they are ATM...

[tiresias]

Re: Ga-7n400 Pro

Cap shorted internally causing excessive load?

I've seen similar on caps on other GA boards on other forums...Purple/Blue with gold stripe but not OST... Though I cannot recall exactly what they are ATM...

The larger ones you can see on that pic should be Sanyo WG 6.3v 3300uF, if it's anything like the "Pro2" model one of the kids has.

They would be green, with a gold-stripe.

[Spacedye69]

Re: Ga-7n400 Pro

Purple/blue with gold stripe could be GSC. Look just like MBZ.

[MD Willington]

Re: Ga-7n400 Pro

GSC... yep that's the one.

[keyboardcowboy]

Re: Ga-7n400 Pro

So which cap should i change?

[tiresias]

Re: Ga-7n400 Pro

So which cap should i change?

Could you first check whether those caps on your board really are GSC?

Should they indeed be GSC, then I would suggest you swap out all the larger GSC for a less unreliable brand.

[keyboardcowboy]

Re: Ga-7n400 Pro

All the big and small caps are from nichicon except for three big caps which dont have any name on them,they are black with golden strip

[tiresias]

Re: Ga-7n400 Pro

All the big and small caps are from nichicon except for three big caps which dont have any name on them,they are black with golden strip

Are there any markings or model numbers that you can see at all?

What do the vents look like? Do they use the Nichicon Cross?
Teapo Star?
Rubycon K?
Sanyo K?
Panasonic T?

Cool names, eh?

PS. Forgot one: the Chemicon Triskalion

[keyboardcowboy]

Re: Ga-7n400 Pro

Sorry but i dont know what vents are i just saw the name of the caps on the side,it says nichicon in small letters and the caps are black

[Chris1992]

Re: Ga-7n400 Pro

@Tiresias: wtf is a triskalion?! I call it a Mercedes logo =P

[arneson]

Re: Ga-7n400 Pro

The mercedes had vents years ago,
they were little side windows that you open after farting so not to kill your passenger.

[Shroomie]

Re: Ga-7n400 Pro

Can't we just call it a "Y"?

[keyboardcowboy]

Re: Ga-7n400 Pro

The nichicon caps have a cross whereas the no name caps have a T,also there is a small M within a box on the no name cap

[tiresias]

Re: Ga-7n400 Pro

The nichicon caps have a cross whereas the no name caps have a T,also there is a small M within a box on the no name cap

That's Panasonic... should be good. The 'M' is for Matsushita, in case you were wondering.

...

PS. So you don't actually have any dodgy-brand caps on that board, from what you tell me - a recap probably won't be necessary after all.

[keyboardcowboy]

Re: Ga-7n400 Pro

So what is making the noise,and how can i fix it.In case u suggest to RMA that is not possible as the board is not under warranty so the shipping+the repair charges will cost me more then the price of a new board

[keyboardcowboy]

Re: Ga-7n400 Pro

Cant anyone help me with this problem.