Question about Audio & Video Receivers
Please post make / model of car. Thanks.
Posted on Jan 10, 2008
Tips for a great answer:
Jan 28, 2013 | Audio & Video Receivers
Aug 24, 2008 | Pioneer Audio & Video Receivers
Sep 04, 2011 | Kenwood Audio & Video Receivers
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.
Aug 12, 2011 | Technics SA-DX940
Aug 10, 2011 | Audio & Video Receivers
Feb 08, 2009 | Sony STR-DE197 Receiver
Jan 06, 2009 | Audio & Video Receivers
Aug 24, 2008 | Audio & Video Receivers
Aug 22, 2008 | Kenwood Audio & Video Receivers
Jul 04, 2008 | Audio & Video Receivers
Oct 25, 2016 | Denon AVR2313 7.2 Channel A/V Receiver
21 people viewed this question
Usually answered in minutes!