Question about Audio Players & Recorders
I have one of these exact amps, more than likely its the volume pot that will need a clean with some WD40 to clean the dust build up inside, try putting the balance on that channel alone and turn the volume up, if the sound kicks in or trys to kick in, this will be the problem or the track inside the pot maybe very worn on the lower setting, which will need then replacing, remember these amps are around 40 years old and chances are it has done a lot of work, if this doesn't fix the problem, as the previous post said it may be in the power amp section and could just be a dry joint on any of the componets, you can pick up all the componet parts fairly easily and cheaply nowdays anyway, let me know how you go.
Posted on May 31, 2010
Stereo amps are basically two single amps put together with a power supply that drives them both.
So in this case one of the amp sections has failed. The first thing to do is look around and see if anything is damaged, burnt etc.
If you turn the volume up fully on the right channel and hear weak sound/music, then the pre-amp might be good. In which case you need to replace/look at whatever is on the heat sink and determine what works the right channel on it.
If you don't hear any sound at full volume, then the pre-amp section has failed. You might find this to be an IC.
If you probe the amp section with an isulated tool you might get it to buzz. Since the left amp will be the same as the right, probing the left will tell you what the right should do. Keep away from the power supply part!
Posted on Nov 18, 2009
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Posted on Jan 02, 2017
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