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Help about av receiver

Dzoro

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Dzoro

Joined Feb 1, 2019
194
So i got denon avr 1905 it got problem when you power it up it stayes on for 5 seconds and shuts itself off so i found that the regulator 7915 and some components were bad i chaned them and now it stayes on but when i connect the audio input board the unit again shuts itself off i looked at the board and everithing is smd with big proccesor on it and i don't have skills to repair the board
So does anyone knows what the problem may be and how can i fix it
Dzoro
 
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