Tip & How-To about Audio Players & Recorders
A ) Start with the input , then to the op-amp IC.
b ) check your cable like those above for continuity , ( VOM )
or use the signal tracer ( you can use any small amplifier with
speaker and point the tip of the probe on designated points
on the preamp section.
c ) then check also cable ( like one with the arrow pointed )
d ) from the cable it goes to the volume control
e ) the audio signal passes through these op-amp , see the diagram:
f ) Upon reaching pin 11 of IC TDA7370B via C444, the audio will be
further amplified and send the audio signals to your right speaker via the
cable above ( see the image ).
g) there might be a reason or a possibility that your Main Audio IC is good ,
under the following conditions:
1 ) the said IC is not overheating
2 ) the voltage on pin 14 is one-half of the supply
3 ) that there is audio input on pin 11
If it is, then
It could possibly from the capacitor ( C24 ) to the foil path going to your speaker.
Anyway you can check it with a signal tracer , only if you have one.
Posted by Rommel... on
Jan 10, 2014 | Texas Instruments OPA134PA IC, AUDIO,...
Jul 14, 2011 | SIM2 DOMINO D35 DLP Projector
Dec 11, 2009 | MXR Phase 90 Pedal
Jul 27, 2009 | Audio Players & Recorders
Jun 12, 2009 | Audio Players & Recorders
5,097 people viewed this tip
Usually answered in minutes!