I'll try to summarize as best as I can. Some time in 2015 I bought a remanufactured Yamaha RXA550 (stamp under top cover reads 21 May 2015) that came with a 3 year extended warranty from a well-known provider. I don't recall the vendor but can look it up. The warranty has expired about a year ago. Last week it shut off, repeatedly. I don't listen to it loudly, there's plenty of room under the cabinet, above the unit, for it to breath, but I did listen to it daily, or just about. I found vids on YT about similar problems with two or three different manufacturers of units of approximately the same age. Tried resetting it holding Power+Info+Tone Control, but it just briefly flashed "Protect I", the unit's self-protection mode that's usually set off by shorting, and it immediately shut off. I did this a few times.
I removed all wires and cables going into it, tried to Reset as above, and it shut off. I opened the case, checked the fuse and it was good, gave it a good looking over and nothing jumped out at me as being out of place, blown, swollen, having leaked, etc.. I disconnected and removed the transformer, and the checked the primary leads, brown and gray, and got 5.2 Ohms, repeatedly. I'm not sure what they're supposed to read. Transformer is a Bando YE074 AO.
Can anyone with more experience direct me to a probable cause and/or fix? Seems I can buy something with similar capabilities, new, for about US$300-$400, but it's disappointing to think that these days these things only last about 4-5 years. I have an Onkyo audio receiver that is about 30 years old and works great. I realize the video capabilities complicates things, but there has got to be better made components in this price range.
Any ideas on how to fix this and the approximate cost? I'm pretty sure this was a common occurrence; just trying to figure out on whether to throw away or attempt to fix.
Thanks in advance!
