I've been doing electronics repair for longer than I care to say. You showed me a couple of really nice tips! I have an 1152DC, with a bad phono section on my bench right now. It was developing a nasty parasitic oscillation with nearly any signal. I found a previous repair at Q405 & Q406 that leads me to think they are the culprit. Thanks for the video. You can absolutely teach an old dawg new tricks! :)
I'm curios about getting my Pioneer SX-1080, updated. It plays perfectly fine, no issues at all. Does the update add any tangible benefit, for me? Thanks.
I haven't had an SX-1080 come across my bench yet. But here are a few reasons why any vintage receiver of that age should be checked over by a competent tech (this list is not exhaustive) 1. A visual inspection could identify capacitors that are physically leaking electrolyte, slowly damaging the circuit boards, which will be much more expensive to repair when it finally does fail. 2. The power amp bias could have drifted out of spec causing more stress on the output devices than they need to be subjected to. 3. Electrolytic capacitors are essentially consumables. They generally have a lifespan of 10-15 years according to the manufacturers. Obviously many have long outlived that, but they will fail eventually. It may need only a few caps in key locations replaced to improve its performance. Caps that are exposed to higher current/heat/etc such as in the power supply. Good to hear that it's working well, though!
Thanks for your insight and expertise. I really do need to have it serviced as it's only a matter of time, like you said. Bought it new when I was in Okinawa, Japan as a Marine in 1988. Have played it daily for years at a time. Great receiver. @@pac1085
