Wave Radio distortion above 50% volume.
I have an early Wave Radio (thin remote, AA batteries for backup).
I get low frequency distortion above about 50% volume.
If I use the phono variable out to connect to my hifi (which cuts the internal speakers) there is no distortion on the external system speakers.
It affects both speakers so I think it is more likely to be an amplifier problem than the internal speaker units.
I cannot see any ‘blown’ electrolytic capacitors (ie bulging tops), which is a common problem in ageing consumer electronics. Of course they could still be the problem but I would need to remove each one and test and there are rather a lot of them.
Any advice on this fault, are there some particular components I should change such as a few particular capacitors. For instance did some weak points in the design come to light some years after manufacture that have just manifested on my radio?
I know this is a very old radio but it hasn’t failed outright and I hate scrapping 99% working electronics.
Any ideas would be appreciated.