Has anyone looked at or attempted repair on these types of amps? I bought one non working for parts for a song... but now I see the complexity of such a device .   It seems that they are stingy with schematics and all roads lead to approved repair shops. This one won't even power up... no power LED, no fan, no life at all.   Just learning about class D, fascinating stuff!

I have very little experience with electronics repair, about a year now of getting a few vintage stereos back to working.   I have the basic tools of the trade (solder station, DMM, O-scope), nothing pro or too fancy.  Has been a LOT of fun making things work that were trash.   

I recently picked up a really cool B15T, which was "working" in that it makes sound.  But at full volume, doesnt make enough output to be uncomfortable, its more like watching TV.   The amp will also cut in and out with a slap.    I dont SEE any solder joints or anything obvious (to my novice eyes). Can anyone advise on a good place to start?  It's too cool of an amp to be broken