Have I fried my Roberts radio

[princeperch]

I got myself an old Roberts revival 550'off eBay. To be fair to the bloke selling it to me he wrote on a post it note, make sure you use the right adapter withy it and that it has a negative polarity.

I didn't see this until too late, and tried a 9v adapter I that powers a more modern Roberts radio I also have.

Turns out that that adapter isn't the right polarity. The radio didn't turn on but when you turned the volume button you could hear a sort of pulsing from the speaker .

Have I fried my new radio after five minutes of owner ship? I'm going to pop out at lunch and get a big pp9 battery to see if that works as well. But I'm a bit worried I've buggered it now. Is it likely I could get away with it?

[princeperch]

just purchased a pp9 battery from screwfix for 5 quid and the radio fired up. I was a bit worried I had knackered it earlier but I think ill stay with the batteries now.

they are nice old things Roberts radios aren't they. this one is a bit battle scarred but im sure it has a few more years of radio four left in it yet..

thanks all.