I repaired an older PC motherboard which was absolutely dead. Turned out to be the 32KHz crystal defective which was responsible for the standby stuff of the southbridge.
Wow blasting 5 volts ac into the crystal seems like a quite hard drive… doing the same circuit years ago the crystal manufacturer suggested a couple hundred millivolt absolute maximum…
Dear Sir, i have the receiver model svx288. It has the problem with channel A, the radio signal in the receiver is not stable, it’s continously switching between A and B signal. The output sound is also unstable and sometimes mutes. Could you advise how to fix it? Thank you so much for reading my comment!
8 หลายเดือนก่อน +1
How would you track that fault if you only had a multimeter like we normal people?? :) Could you?
You DON'T. Some things CAN'T be tracked with just a multimeter. That's why we HAVE other tools. Fortunately some of these tools have become small and affordable. Check out the Tiny SA, for example.
I think you can measure the voltage of a 32khz sine wave with some hand held multimeters, agilent 1251A seems to be specced up to 30kHz so I think that would be adequate to see this significant difference in amplitude before and after the crystal
@@Arnthorg Maybe. After the fact, when you know the answer, you can optimize the steps. But how do you know beforehand? I would say that oscilloscope should be included into a basic electronics toolkit. They are quite affordable these days.
@@feedback-loopyes I agree. I was under the impression that behcet was asking how to check for this specific fault with minimal tools just in case he encountered one of those receivers.
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Nice work tracking that fault down, and well explained.
Excellent work! I always enjoy watching you work through a problem. Thank you for sharing this video with us. Regards, David
Nice to see you here again.
Very satisfying and enjoyable.
excellent repair as always.
Nice repair. Thank you for sharing
Really good video.
I repaired an older PC motherboard which was absolutely dead. Turned out to be the 32KHz crystal defective which was responsible for the standby stuff of the southbridge.
Excellent repair video once again!
Awesome. Nice job as always. Cheers from Belgium ;)
clear! thanks for sharing
Wow blasting 5 volts ac into the crystal seems like a quite hard drive… doing the same circuit years ago the crystal manufacturer suggested a couple hundred millivolt absolute maximum…
Well, saying "5 volts AC" is a bit misleading. This is about 1.8 AC RMS
very good.
Dear Sir, i have the receiver model svx288. It has the problem with channel A, the radio signal in the receiver is not stable, it’s continously switching between A and B signal. The output sound is also unstable and sometimes mutes. Could you advise how to fix it? Thank you so much for reading my comment!
How would you track that fault if you only had a multimeter like we normal people?? :) Could you?
You DON'T. Some things CAN'T be tracked with just a multimeter. That's why we HAVE other tools. Fortunately some of these tools have become small and affordable. Check out the Tiny SA, for example.
Well, in this case it turned out that an oscilloscope would do, but it is hard to investigate if you cannot see much.
I think you can measure the voltage of a 32khz sine wave with some hand held multimeters, agilent 1251A seems to be specced up to 30kHz so I think that would be adequate to see this significant difference in amplitude before and after the crystal
@@Arnthorg Maybe. After the fact, when you know the answer, you can optimize the steps. But how do you know beforehand? I would say that oscilloscope should be included into a basic electronics toolkit. They are quite affordable these days.
@@feedback-loopyes I agree. I was under the impression that behcet was asking how to check for this specific fault with minimal tools just in case he encountered one of those receivers.
Promo'SM ❣️
Good one! Thanks for the looksee.