Pong problems

I recently bought a pong console off of ebay, the apf tv fun. It worked great! Until the picture went away and very bad smelling smoke came out of the thing. If I try turning it back on it works for a few seconds but the picture goes away again. Any idea what happened?

 

Something burnt out. I'm afraid it's one you'll have to diagnose yourself, or take to a repair engineer.

As it's already smoked, I would recommend you don't power it up again until it has been (hopefully) repaired, to avoid further damage to the device, you or anything around it!