Onkyo tx nr609 MCU replacement

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srt
Junior Member

Posts: 90

Onkyo tx nr609 MCU replacement Jan 31, 2021 2:37:58 GMT -5

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Post by srt on Jan 31, 2021 2:37:58 GMT -5

I have Onkyo 609 , when I am measuring the voltages in MCU PCB I shorted the MCU pin to 15 volt rail , now MCU not functioning and it have internal short in Standby power section, I have another 609 I want to copy the MCU programme from working 609 and to upload in new MCU which I am going to buy , MCU part number is uPD70f3746, Which programmer I want to use? Or without programmer can we use TX RX pin to read write the programme?

tjmotter Senior Member Posts: 384	Onkyo tx nr609 MCU replacement Jan 31, 2021 21:07:54 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by tjmotter on Jan 31, 2021 21:07:54 GMT -5 This thread describes the process repairalmostanything.com/thread/850/tutorial-flash-onkyo-main-microcontroller

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