Yamaha RX-V420 Receiver "audio fault" Questions

...Audio on front left speaker is very crackly with reduced sound output. Have fault found speakers and cables, fault is definitely the SR7300 Amp. A couple of techo taps on top of unit fixes the fault ...

fault is within the amplifier. If there is no audio , you will need to first start from the speakers, test them individually and see if there is any humor signs of the amp working. If not remove plug,

...fault is with its audio output transistors. If any one of them get shorted [collector to emitter short]; this kind of fault can occur. Check 2SD1510 / 2SB2510 transistor pair at this section circuit ...

...this may happen.  If any of audio output sections have shorted component/s with it, this may happen.To point out the exact fault location, the details you have given here is not succiciant.

I lost Audio output Device Compute says nooooooooo, my fault tampering with the programmes. Now lost all my sound and system says no audio devices installed. Diving me mad.....How do I fix it pls Jo

...indicating that is working properly but it isn't. check your input cables for open circuit line or bad connector(jacks) fault of these above can give you false indication that audio signal is

...fault with either audio power amp ic (IC 501) or power supply ic IC 502. As both said ICs get very got first remove bottom steel grill and with the power off and capacitors drained (shorted together ...

...audio signal generator. Inject signal at volume control and compare left and right output levels. This will isolate fault to pre amp stage or power output stage. freezer can be very usefull in ...

...fault. Is it possible to E-Mail me a User Guide. you can get the guide here http://www2.panasonic.com/consumer-electronics/support/Audio/Portable-Audio/Portable-CD-Players/model.SL-SX281C if you need ...

I have a Motorola DCP 501 Everything seems to work except the clip type speaker hook-ups no faults displayed Hello There are Center Speakers, Surround Speakers[L&R] and Front speakers[L&R]. ...