[quote name='Musky' post='727388' date='Jan 28 2010, 11:00 AM']Just a thought, but your DP100 might just be suffering from a dirty and corroded input jack if the thing is powering up ok. I had a similar problem with a Laney where it powered up ok and even worked plugging into the effects return, just not when into the preamp. A quick going over the contacts with some wet and dry did the trick.[/quote]
You might be on to something there.
The amp works when using the effects return port.
Sounds flat, but encouraging non the less.
Thanks for the replies