DAC MAGIC 100 Service manuel -required

DAC MAGIC 100 Service manuel - Required

Hello everyone,


Needed service manual for Cambridge Audio dac magic 100. I have a problem with the usb input it seems to be locked and a reset procedure is necessary. I actually have two devices with the same problem if anyone has an idea experience or manual I would be grateful, optical and coax input work without problems.



Thanks in advance
 
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Hello ManoloMos, thank you very much for the reply I will be very happy if be a problem with the driver but it's not the USB port is completely dead but it's not shorted.
Something get wrong with ROM I personally think.

The new DAC unit, before the USB port stopped functioning, it started interrupting during the activation of home appliances. (Reproduction completely stops and it needs to be turned off and on again in order to work) very strange behavior. After that, the USB completely stopped functioning, and the computer cannot recognize the DAC unit.


The problem with the older DAC unit is very similar to new one, except the computer can't recognize the driver, no samplig led indicator turned on.
 
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DAC MAGIC 100 usb port problem solved!

Finally solve the problem with the Cambridge audio dac magic 100.

I replace the chip qfn package USB3340 it's a USB 2.0 transceiver also try to understand what exactly happend.

Finally found the inductive switching transients spikes from my cooling water machine during switching off, voltage collapsing and destroy my usb port.
I change the plug to a different phase and buy APC surge protect power strip
Now everything working perfect, hope to help someone.

Best regards.
 

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DAC MAGIC 100 usb port problem solved!

I also took the opportunity to tweek it a bit.

Best regard.
 

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DAC MAGIC 100 usb port problem solved!

Finally solve the problem with the Cambridge audio dac magic 100.

I replace the chip qfn package USB3340 it's a USB 2.0 transceiver also try to understand what exactly happend.

Finally found the inductive switching transients spikes from my cooling water machine during switching off, voltage collapsing and destroy my usb port.
I change the plug to a different phase and buy APC surge protect power strip
Now everything working perfect, hope to help someone.

Best regards.
Dear Mr. Stenks, Do you have a hardware upgrade schematic/description/procedure for the DacMagic 100? Thx for your time!
 
Hi,
I've got one where either No Functions or Lights or, All Lights on except USB but still no Functions.

Does anyone have a Schematic?

Cheers,

P.
Try this maybe will help this is reset procedure
Best regards.


To carry out a reset, press and hold the power on button while you plug the power supply into the DAC.

· Press the source button repeatedly until the 88.2KHz LED comes on.
· Press standby button again.
· The USB input LED will blink fast, then stop.
· Then S/P DIF 1 LED will comes on.
 
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Finally found the inductive switching transients spikes from my cooling water machine during switching off, voltage collapsing and destroy my usb port.
I change the plug to a different phase and buy APC surge protect power strip
Now everything working perfect, hope to help someone.
Hi Stenks! Congrats on fixing your DAC!
Would you expand on how this damage to the USB port happened, if you know more?
 
I forgot to mention that I contacted Cambridge audio and they did not want to provide the documentation because it contains elements of a trade secret.
They referred me to the representatives, and there this board is not repaired, but a complete replacement
 
Hello, i have problem with my dacmagic 100 after thunder.
I need replace USB3340 and some parts around GND toggle
-R48 is 100 Omh resistor
-C102 is ??? capacitor
-FB9 is ??? ferrite bead
Maybe who measuring or knowing what is value this components, and suggests about repair my dac.
Big thanx!
48BCDB58-9B79-496C-801C-387FD1711823_1_105_c.jpeg