Question about Audio Players & Recorders
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Without a schematic you can still trace the circuit to locate the fault.
Put a music source or sound source into the bad channel and a good channel, and with an oscilloscope or with a pair of high impedance headphones with test leads on the ends- you can set up a low z headphone with an impedance match trasformer, make sure you have test prod ends on one of the leads. The other can go to a chassis ground. Start at the input and work your way forward comparing the signal between the good channel and the faulty channel. When you lose the signal or you encounter severe distortion, you are in the vicinity of the defective part.
Common failures are a Deffective 4558 or TL072/TL071/TL074 IC chip. You may have a faulty electrolytic capacitor, or even a faulty bypass caoacitor in general. Bad solder connections, even a broken fim resistor.
With the IC chips, the usual power pins for an 8 pin plastic or ceamic DIP are pins 4 and 8. usual outputs for the 8 pin are 1 and 7 the remaining pins are the inverting and noninverting inputs. 2 and 3 and 5 and 6.
Also check switches and especially those with interupts on the input and output jacks- they can get dirty.
Posted on Apr 11, 2012
Tips for a great answer:
Mar 18, 2017 | Crate Music
Jul 21, 2016 | Crate Music
May 19, 2014 | Audio Players & Recorders
May 15, 2014 | Car Audio & Video
Apr 10, 2012 | Music
Jan 27, 2011 | Crate Flexwave Fw120h 120 Watt Head Dsp...
May 31, 2010 | Crate FlexWave FW15 Guitar Amp Combo, 15...
Apr 18, 2009 | Crate Music
Apr 18, 2009 | Crate FlexWave FW15 Guitar Amp Combo, 15...
Sep 23, 2017 | Samsung Audio Players & Recorders
160 people viewed this question
Usually answered in minutes!