I've worked on those, and my memory of the power supply's the same as Arfa's.
I too would be looking for bad earth connections in the affected channel. Either that or possibly a dried-out supply decoupling cap associated with a regulator etc. Or... that atrocious yellow glue having gone conductive and coupling AC into the signal path.
The main power supply rails always have significant ripple, which is supposed to be stopped by the regulators feeding the front-end circuitry.
I thought everyone knew that "Yammy" is short for Yamaha, and "Kwaka" is a truncation of Kawasaki. It must be applicable only in England and Australia?
it sounds like it might explode anytime :-)) I will check to see if it gets hot, and check the tweeter. One question : on the back of the receiver there is a "Ground" round thing. Am I suppose to attach a cable or something else? ( excuse my lack of proper terms, I sell sweatshirts, I am no technician...) thanks again, man, you guys are good
it sounds like it might explode anytime :-)) I will check to see if it gets hot, and check the tweeter. One question : on the back of the receiver there is a "Ground" round thing. Am I suppose to attach a cable or something else? ( excuse my lack of proper terms, I sell sweatshirts, I am no technician...) thanks again, man, you guys are good
The " Ground " terminal on the back, is usually for use with a phono deck ( vinyl record playing turntable ). You will normally find on these devices, a 'standard' stereo screened cable, which is connected at the deck end to the two channels of the pickup cartridge, and to normal RCA jacks at the amp end. There is often then a separate wire connected to the main metalwork of the deck, which runs along in tandem with the screened cable, and terminates in a fork connector, to go under that ground terminal that you mention.
The function of this wire is to tie the grounded metalwork of the amplifier, to the metalwork of the deck, thereby grounding it also. Without this additional ground, the (extremely) sensitive phono inputs will have tendency to pick up all manner of hum, clicks and pops, particularly when you touch the tonearm ( which also usually has its own thin groundwire going back to the main metalwork ) or the start / stop controls etc.
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.