posix_memalign
New Member
Hi,
I have a JVC RX-230R amplifier that is no longer working.
The device is five years old and has only seen moderate use. Prior to failing it was not put under excessive stress.
The device does power-on and does produce a very weak, distant audio that is of the same very low volume regardless of the volume setting -- unless the volume is turned very high, at which point the audio is cut and there is a click (from which I assume is a relay); at this point the device will remain mute for some moments before the relay turns on again with another click (after the volume has been turned down) and the weak, distant audio is again present.
So far I have only looked for bad capacitors and checked a few of the stronger resistors, I am however at a loss of where to look for the problem.
I'm not familiar with amplifiers and the common associated problems with them. If the problem with this particular device is obvious them please tell me what the problem is.
If the problem is not so obvious, what is the problem most likely? I.e. where should I start and why? What parts should I examine? I have an oscilloscope and a multimeter.
I'm not sure what else information could be useful for me to provide when seeking help; if there is anything else I would be happy to provide additional details.
I have a JVC RX-230R amplifier that is no longer working.
The device is five years old and has only seen moderate use. Prior to failing it was not put under excessive stress.
The device does power-on and does produce a very weak, distant audio that is of the same very low volume regardless of the volume setting -- unless the volume is turned very high, at which point the audio is cut and there is a click (from which I assume is a relay); at this point the device will remain mute for some moments before the relay turns on again with another click (after the volume has been turned down) and the weak, distant audio is again present.
So far I have only looked for bad capacitors and checked a few of the stronger resistors, I am however at a loss of where to look for the problem.
I'm not familiar with amplifiers and the common associated problems with them. If the problem with this particular device is obvious them please tell me what the problem is.
If the problem is not so obvious, what is the problem most likely? I.e. where should I start and why? What parts should I examine? I have an oscilloscope and a multimeter.
I'm not sure what else information could be useful for me to provide when seeking help; if there is anything else I would be happy to provide additional details.
