[PaulR]

I restored this set a few years ago and it worked really well. I have recently resurrected it and find that there is a constant rustling noise on FM. If I tune into it with my signal generator the rustling is a lot louder as the signal increases. I have substituted all the valves with ones from another set and that makes no difference. I have also used switch cleaner on the sliding and switches to no effect. Tapping and flexing the various joints makes no difference.

Other than the rustling the set works very well and is very sensitive on FM. I do actually have another chassis I could restore and substitute in the case but I would like to get this one working properly.

I wondered whether the AGC is causing the problem but I am not sure. Can anyone help please?

Thanks

PS I haven't replaced any resistors as I tend to leave the original ones alone if the set works ok.

Paul