Hardware help identifying damaged component.

[buttslovin]

got a damaged switch. found a nonexistent solder joint and the component in red is damaged, was wondering if anyone around here had any insight as to what it is.

thanks in advance.

 

[DaveLister]

You need to give better perspective on the shot for orientation. Not many will look all over Both sides of board to find your part.

 

[buttslovin]

on the back of the board underneath the bcm chip circled in orange

 

[mattytrog]

got a damaged switch. found a nonexistent solder joint and the component in red is damaged, was wondering if anyone around here had any insight as to what it is.

thanks in advance.

Looks like a reference oscillator / crystal for audio chip

My test boards don`t have it. They have a 2.2uH inductor there instead.

Possibly a regional difference... 50Hz vs 60Hz?

 

[buttslovin]

i'd guess 60hz as its a U.S. console. looking at the board it's on, it looks like the components around the ic highlighted in yellow. i may have to order one and see if it works. any idea what size it is? thanks for the help here and all your other work on the switch.

 

[mattytrog]

i'd guess 60hz as its a U.S. console. looking at the board it's on, it looks like the components around the ic highlighted in yellow. i may have to order one and see if it works. any idea what size it is? thanks for the help here and all your other work on the switch.

No worries.

The size is 0805. That is the physical size. (of the inductor on my unit anyway)

However, it will have a frequency stamped on there.

I cannot tell you for sure what it is, however...

Best guess...

It is the BCLK source (or bit clock).

Thus, if it is anything like other ALC`s, will probably be 24Mhz

Possible theory...

In 50Hz countries, the bit clock signal derived from elsewhere would be adequate.
However, in a 60Hz country, the timing will be off, thus needing another oscillator.

Seems strange when you think about it, as the device is DC. A dwitch mode PSU takes care of the DC.
So, in all that is holy, why would 50 or 60 Hz make a difference?

That answer would have to be for TVs maybe that still use a 60Hz (or 50Hz) raster (old CRT. WTF?)

Just a theory though. May be completely inaccurate.

Maybe more likely though this...
It may be needed for filtering for FCC regs (maybe for a notch filter) to notch some square-wave harmonics out of the signal lines.

That may explain why on other units, an inductor is sufficient rather than a crystal oscillator. To satisly the FCC...

But like I say, just speculation due to there being no datasheet for the 5639

 

[buttslovin]

i'm guessing you would't really know where to get something like that? i'm poking around on mouser and overwhelmed.

 

[mattytrog]

i'm guessing you would't really know where to get something like that? i'm poking around on mouser and overwhelmed.

Because its an inductor, (just a coil of wire), I`d try bridging it. See if it gets something working.

 

[buttslovin]

Because its an inductor, (just a coil of wire), I`d try bridging it. See if it gets something working.

that was actually going to be my next question, if bridging it would work. well i guess it's worth a try.