Hello, I've found a very nice 900K on a fleamarket with some intermittent failure.
On FM and on all radio bands the sound volume goes down suddenly. When this happens the signal meter indication is ok but the stereo indicator (on FM...) does not light up. Cleaning the Noval socket and the selectors board have solved the problem for a while but I suspect this is not the origin of the problem. The sound is ok on the other inputs, so it's not an amplifier problem.
Besides It takes a few seconds for the sound of the radio to get its normal level when the problem disappear...
Thanks!
Philippe
