Hi all, Newbie here - you have a great forum. I am trying to revive an ~25 year old Lionel O27 Gauge set with a DC powered loco. I am having several power issues and I'm wondering if anybody has repair suggestions. When I power it up, the train runs a bit even if the lever is all the way off. Then, I'll hear a 'clink' noise coming from the transformer and it stops running completely. Sometimes if I give the loco a nudge, it'll start up again. The transformer is a Lionel 4060 that powers the train with DC and accessories with AC. I have a light attached to the AC posts and it flickers on/off in sync with the train. It's not an issue with the loco as I had that checked out at a hobby shop. I'm guessing I need a new transformer, but AC/DC transformers are hard to come by on eBay. Does this problem sound like something that's fixable, or do I need to seek out a used but functional one elsewhere? Thanks in advance for any repair suggestions!