Question about Sharp CD-BA200 CD Shelf System
Disconnect your speaker boxes. If the "protect" error goes, then the speakers or wires may be at fault. If the error remains, most likely the audio output IC is blown.
Posted on Oct 04, 2008
Tips for a great answer:
Apr 28, 2014 | Sharp CD-BA250 CD Shelf System
Sep 06, 2011 | Sharp Multi-System Mini Component System...
It is possible that the amplifier had encountered a fault with a higher current drain which had triggered it to a protection fault condition. The fault can be your output drivers- the MOSFETS/IC's fitted for both the channels, Use a meter after disconnecting to check for short in the drivers. Disconnect the positive and negative voltages to the output and see if the protect changes. Even a fault in the preamp stages that drives in high current into the output can shut the Amplifier. Sometimes this can be a noise like a HUM or HISS before the protect works. Faulty capacitors in these circuits also can cause similar issues and needs close observation.
You need to confirm and replace the specific stages or outputs. If not there can be issues in the mother board, maybe the protect circuit by itself is shutting off due to a faulty bias , maybe a leak in any voltage/current sensing circuit. Also disconnect the speakers and test, if the protect is off then check for short on the speakers.
Jul 11, 2011 | Sharp CD-BA250 CD Shelf System
Jun 07, 2010 | Sharp CD-BA250 CD Shelf System
Jun 05, 2009 | Sharp CD-BA200 CD Shelf System
Feb 21, 2009 | Sharp Audio Shelf Systems
Nov 20, 2008 | Sharp CD-BA250 CD Shelf System
596 people viewed this question
Usually answered in minutes!