Sad to say, I guess one of the output transistors, or something in the line went belly up as one side the sound became distorted unless I put it on mono.
The cost of repair would have been prohibitive, so last year I bought this 1970's Leak 2000 on eBay for the princely sum of £32.
It uses the same din plugs as the Philips, so it was just a case of swopping them over. It has more bells and whistles, front and rear switches, inputs and outputs than I'll ever need and the reproduction is superb. It still doesn't get used much, but again it's "there" if I need it.
It amazes me how inexpensive such quality equipment can be, is everyone fixated on DAB radios now?