Question about Yamaha Audio Players & Recorders
Posted by Anonymous on
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Posted on Jan 02, 2017
Probably selector switch when you turn to CD mode. The ball bearings inside the switch make poor connection resulting in intermitant problems to either speaker. Yamaha knows the selector switch is defective but has stayed silent. I've had mine replaced for $144.00 Can and it works AOK now. Different switch of course. I've had my problems with that switch for a long time and it was after a few years that a knowledgeable technician knew of the problem. Poor support by Yamaha! I'll never buy a Yamaha product again nor will my relatives and friends. Do the calculations and assess whether the cost of the switch is worth the value of the receiver. I think it is worth it as the receiver when it works is excellent. It is at a stage now when other problems could creep in though including corrosion on the boards and solder joints so have the technicians do a entire quality check at the same time...
Posted on Jul 02, 2009
Get hold of a Servisol freezer spray, from either Maplin or Radio Shack, depending where you live. Take the top off and look inside. Locate the output transitors for the right channel and with it powered up wait for the fault to go away. Then with the spray, squirt any of the transistors you suspect. If it starts up (the fault) after the spray, that part has gone!
Do them one at a time and wait a while before spraying the next part. If you find one that acts up, to make certain, warm it back up by touching it with a soldering iron. Then freeze again.
Posted on Oct 07, 2009
The output speaker relay is corroded a bit. The higher volume creates enough voltage to bridge the gap and make a good connection again. Some of these relays are sealed and can not be cleaned. The relay should cost around $10-$15 max.
Posted on Dec 24, 2009
i) It is possible that one of the electrolytics has been put in with wrong polarity. Check in the faulty channel preamp. It may have caused the HT to collapse in that preamp section - look for burnt resistor.
ii) Also compare the corresponding voltage on the anodes of the preamp valves in the working & non-working channels. This will tell you which area is faulty.
Posted on Feb 16, 2011
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