Anyone have M-CR412 internal picture? or service manual?

[Mark_]

My M-CR612 was bricked by firmware update, and I try to flash firmware by Renesas RFP APP.
but the firmware of uController was cleared at all.
Does anyone have M-CR412 internal picture, I want to know, does the main board of M-CR412 is same as M-CR612. Thanks.
Or anyone has service manual of M-CR412, only M-CR612 service manual could be found online.

 

[manicm]

The 612 is still being sold if I'm correct, it's too expensive to gather dust, can you not take it to a local dealer for servicing, or contact Marantz UK?

 

[Mark_]

I have contact local service center of Marantz, been told that this problem could be solved by flash full image of MCU, but they didn't have that, it should be flashed at factory. Meanwhile the mainboard cannot order for service anymore.

 

[Friesiansam]

You could look for an independent repairer. This company say they will find a repairer for your equipment https://getitfixed.uk/brands/marantz-m-cr412-audio-repair-services/ NB, this just came up first in a search, I have never used them and, have no idea if they are any good, it's just an example.

 

[Mark_]

Sounds good, maybe an independent repairer is the only solution. Thanks!