Thanks for your help. I am not sure if it is worth it given the age of the Tv and the fact that the original sound was not terrific, but I will make enquiries and hope it can be done as cheaply as possible. Thank you
Hi, thanks. I realise that I just have to bite the bullet and get a TV engineer out but I am not keen on the bill. I did test the Harman Kardon speakers I used with the TV on my lap top and they are actually okay which isolates the problem to the TV. One always hopes for a tweak or simple bust fuse as a remedy but it looks like some financial outlay is needed to make the sound improvements unless you know of the possibility of buying the component part and perhaps doing it myself. Maybe a bit ambitious!
I have been looking on Ebay and there seem to be a variety of Mainboards available apparently for this set . Some say AV board ( is it the same thing?) and the prices vary. I think my best bet is to get the part number to be sure. I don't know how confident I am about taking the back off perchance I damage something. I guess, however, it is second nature to an engineer like yourself.