Question about Onkyo Audio & Video Receivers
SOURCE: Onkyo TX-SR500 loosing settings
Turning any receiver off will erase the settings - there is no backup battery (Onkyo uses Battery Free Memory Backup) and the length of time depends on the capacitor charge. Why not just leave the receiver plugged in? Stand-by mode uses a negligible amount of power - enough to keep the capacitors charged and the LED on the front panel on.
Posted on Jan 28, 2008
SOURCE: No receiver display lights
The unit has a built in display dimmer, with a button to control the level of brightness from the display both on the remote, and the front panel.Try this
Posted on Mar 21, 2008
SOURCE: Onkyo receiver audio problem
I have Found two problem which cause NO AUDIO 27-07-08
2.Failed componet IC Q710 part # LC372100PT
IF you disconnet CKT board NCDG-6575
you will get audio on speaker B left & right CH only
SOLUTION have CKT board NCDG-6575 Repaired or REPLACED
Posted on Jul 28, 2008
Assuming you really want to have a working surround system you will need a separate stereo amplifier for the 901's to accomodate the need for the Active EQ. There is no way to separate your receiver's front L&R channel preamplifiers from their amplifiers.
I run a Carver AV-406 (5-channel amp) for my 901's in Front, 2 Subwoofers and the Rear Surround channel, with the Active EQ between the receiver and the 901's amp channels. My receiver controls everything and just drives the Center and Surrounds. You would probably just get a nice 2-channel amplier for the 901's.
Modest amps would work but at very loud volumes may go into clipping, which is bad for any speaker. I'm using only 110W for mine and it ahs plenty of steam for the 901's.
For connectiuon I would run a pair of RCA cables from the Front L&R Audio Line OUT to the Active EQ's Line IN; then the EQ';s Line OUT to a separate amp's Line IN. Attach the 901's to the new amp, run through the receiver's setup procedures for volume, etc and you're done.
Not what you might want to hear but 901's have special requirements. I've had mine for 25 years and have no regrets.
Posted on Apr 13, 2009
It may be your amplifier protection circuitry is being activated and shutting down automatically. This is usually caused by a faulty output transistor in one or more of the channels. I recently repaired my Onkyo TX-SR500 which had this problem.
Using a multimeter on ohms check between C and E on each of the ten output transistors. I found Q6051 and Q6061 to be short cct on all pins. Once you have located the faulty channels check the adjacent components for open or short cct.
I replaced the following components,
R6091 (2.2ohm fusible)
R6081 (2.2ohm fusible)
R6101 2x 0.22ohm 2W
The amplifier now works perfectly, cost of the parts is about $15-$20.
If you don't feel confident doing this yourself just find a friend or tech who can do it for you.
Posted on Sep 03, 2009
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