There have been other reports of blown HDMI boards on these units. Not sure how much they cost to replace and repair, but I'd be inclined to just buy a new AVR or continue to use the SR7005 with the analog video ports until a serious advancement in A/V comes along that you long for. Spending 100-150 bucks to fix what's now an older unit would be hard to justify in my book.
Having used the prepro version of this unit, the AV7005 for many years, I recently was in a pinch and needed a new power amp to go with it. As an interim solution I simply bought an introductory Yamaha AVR, a b-stock RXV375 for around $169, shipped, to fill in for both prepro and M.Ch amp, and I was blown away by how good it was, in fact in some regards I like it better!
In A/V reproduction accuracy, there is no concept of "accounting for taste". We don't "pick" the level of bass any more than we get to pick the ending of a play. High fidelity is an unbiased, neutral, exact copy (or "reproduction") of the original source's tonal balance, timing, dynamics, etc..