Problems with radio

[antonyleather]

I've had my car, second user for a few years now. It has recently developed a problem with the radio and extending aerial. Normally I would turn the radio on, the lcd display would fire up and the electric aerial would extend.

During a long trip in the rain, the aerial refused to go down. A few hours later it retracted itself as if nothing had happened. Six months since then and no problems until returning from holiday to find the radio and aerial non functional. I turn the radio on, the backlight display comes on, but there is no lcd display and the aerial doesn't move.

I've tried a new electric aerial assembly as I thought the rain might have corroded it, but this did nothing. I've also changed all relevant fuses but to no evail. I'm beginning to think it is the radio cassette itself.

Does anyone have any idea what might be going on? Also I've tried removing the radio to fit another one and there doesn't seem to be any way of removing it! One final point, the radio is security coded. I did help someone jump start after the last time I remember it working. They didn't disconnect the battery though. Could this be the cause? Does it need resetting or something?

Any help much appreciated!