Re: Measuring crystal oscillators with scope ?
That simplifies measurement then, a near field probe with pre amp and scope.
That simplifies measurement then, a near field probe with pre amp and scope.
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Hi, I'm currently trying to diagnose a Gainward RTX 3060 12GB "Pegasus" that I bought as damaged. I know nothing of its prior history.
A boardview for an MSI model, which matches the board layout apart from some resistor values I saw, was already uploaded in the past if you'd like to have a look (I used file V397_70). See www.badcaps.net/filedata/fetch?id=2101580
It does not have any shorts but it's not detected by the system (i.e. not even shows up in the output of lspci and the CS pin of the Flash chip is never accessed, so apparently the GPU does not boot..... -
Hello friends,
Its been a while, i wish you an happy new year 2025 !
I have this laptop doesn't start, power light up a second when pluging USB-C charger.
Laptop take 0.11A.
All signals and voltages before SLP_S4# are OK but no SLP_S4# , S3...
I get no oscilation on XTAL 32.768 KHZ
Battery is not charging but charging led is here.
PCH heat at 30° approximatively. (with no heatsink)
I think this crystal might be dead, i have only boardview giving me this: XTAL 32.768KHZ 12.5PF/20PPM.
It's a 2 pins Crystal.
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HI,
I'm looking to replace the 27MHz crystal on this board as it isn't generating the signal. I thought it would be easy to identify a suitable replacement as there are clear markings on the crystal, but it appears I was wrong as Google gives nothing. Bad photo attached, but it has X27.0000 and 16AP1 on the casing. It appears to be a 3225 package, but looking through suppliers there are lots of different things like capacitance, tolerance, active or passive, etc. that need to be considered. Could anyone help identify a suitable replacement please?
Thanks....04-21-2024, 03:07 PM -
Can anyone help me, why the board doesn't have 38.4M xtal output? Is it the XTAL dead or the PCH dead? for this reason, the board doesn't power on.12-16-2023, 03:23 AM -
I have a 40 volt AC transformer that I put a bridge rectifier on, and I wanted to see the input signal and the output signal on the same screen on my scope, so I set one channel up with the test lead on one side of the input and the ground lead on the other side of the input, then I used another channel on the scope and clipped the test lead on the positive side of the output then the ground on the negative side of the output.
When I connected the transformer to power, the wire that was connected between the ground lead on the second channel and the negative side of the bridge rectifier...
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