I play around a bit with Yamaha AV receivers (RX-V and RX-A ranges), and over time I have collected some faulty units with the hope of one day getting around to see if I can get them working again. I also had a couple of these fail on me - it powers up and most of the indicators come on and one can access the menus, but no audio, not even from analogue sources. It is typically not a sudden thing, from own experience and also from speaking to the previous owners where I got the unservicable units from. Often the receiver has audio only after a minute or two and would then perform perfectly therafter, and this minute or two then increases over time until you simply do not get any audio, unless you are lucky and it only works on "Direct", like the RX-V675 in my shed 🙂.
I would hate to bin any of these so it is time to give it a go. Following some research it appears that the DSP chip typically gets a bad solder contact over time, and the chips are often no longer available and if you could get a new complete board, the price makes the repair non-viable.
Has anyone had experience in sorting out these bad contacts, if they are indeed on the DSP chip, which is typically a surface mount chip for which you need a magnifying setup to see the pins clearly. I do have a hot air rework station and some other electronic equipment.
I also read this thread which was not too dissimilar to my situation:
https://www.diyaudio.com/community/threads/yamaha-rx-v367.224529/
I would hate to bin any of these so it is time to give it a go. Following some research it appears that the DSP chip typically gets a bad solder contact over time, and the chips are often no longer available and if you could get a new complete board, the price makes the repair non-viable.
Has anyone had experience in sorting out these bad contacts, if they are indeed on the DSP chip, which is typically a surface mount chip for which you need a magnifying setup to see the pins clearly. I do have a hot air rework station and some other electronic equipment.
I also read this thread which was not too dissimilar to my situation:
https://www.diyaudio.com/community/threads/yamaha-rx-v367.224529/