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@ -22,7 +22,7 @@ components. After some haggling I bought the unit and received it a few days lat
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![Denon AVR-4520 - Back view](/img/denon-avr4520-backview.jpg)
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## Diagnosis
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## Diagnostic
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With the **Denon AVR-4520** on my bench I was ready to start diagnostics.
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@ -155,6 +155,11 @@ actual repair. The process is quite simple:
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Done.
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While I wait for the replacement parts to arrive, I figured I'd start using the amp already.
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I have a 2.1 setup, bi-amping the front speakers. Luckily, the AVR allows me to select which
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channel (Surround Back or Front Height) to use for this. I disconnected the `SBR` and `SBL`
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amp board as I won't be using them and circumventing the DC power protection problem.
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## Conclusion
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Replacing the DHCT-A3/C3 darlington transistor pair has resolved the power protection mode
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