Question about Yamaha RX-V650 Receiver
I have a Yamaha RX-V650. When plugged in the 'Pure Direct' blue light comes on, and nothing else. Tried using the power button, remote power button, verified the two fuses on main power board are not blown...
I suspect, but can't confirm a power surge when I was on vacation, but the unit is plugged into a surge suppressor.
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Posted on Jan 02, 2017
SOURCE: Yamaha RX-V420 No power
If the standby voltage exists, the next step is to see whether or not the clock is working. Find the main micro chip. There should be a 3 legged crystal close by. You should see this oscillate (use a scope). No oscillation = no micro control = no turn on. It is possible that the micro is bad or the crysal is bad. Also, check to be sure that the output transistors are not shorted. It is also possible that these are preventing the system from turning on.
Posted on May 12, 2008
It is 30376. The trick to discovering, is to turn the receiver off, first. Then it will power on when you input mute/select 30376. Then you can program the DirecTV remote to adjust volume (in AV2 mode only or in all modes). However, it will only power up the receiver. It has to be turned off with the original remote or at the receiver itself.
Posted on Feb 22, 2009
You've probably already tried this, but...
Disconnect power from the mains, remove lid.
Reseat all the low-power connectors in the unit.
Check the thermister on/near the main transformer.
Check capacitors on or near power supply for obvious anomalies (fattness, leaking, smoked, etc.)
Replace lid and, plug back in, do a rain dance and hope.
Posted on Mar 04, 2009
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