Subjects and predicates

The first step would be to re-initialize the unit. Here's a link to the process-
BOSS Support Knowledge Base GT 10 Factory Reset Initialization

thia was made in 1997. Values of Martin guitars are very subjective, as are conditions. look on EBAY for COMPLETED sales, and compare conditions to yours.

It’s not likely you can. I’m repairing my board right now from the burnt crisp in one corner.

Hopefully you didn't take it on a flight as sometimes they use bomb detecting equipment that subjects cargo to either high levels of radiation or high electro-magnetic fields. This can damage the equipment. It sounds like the processor is not running. There usually is a screen contrast control that can be turned enough that the screen appears blank, but usually you can get a sound out of the unit without reading the screen, Look in your user manual for a FACTORY reset or restore and pperform that procedure. If that doesn't work, then repair is in order. If unit has been vibraated during transportation, it is possible a cable has come off inside. Since you just bought this, EXERCISE you warranty immediately.

Read your manual regarding "fingered chords" and similar subjects. It sounds like you are in a single fingered chord mode...

No experience other than decades of electrical engineering experience. Verify that your amps AND this mixer all are powered from the SAME receptacle or power conditioning module. This means running your power back to the mixer and ANY other connected equipment alongside your snake. Powering equipment from building receptacles at opposite ends of a room subjects your equipment to noise ground bounce that CAN trip the electronic fuses in equipment or cause some devices to lock up. All pro's in sound carry an extension to bring power to the mixer from where their amps get the power.

If your equipment gets too hot, try a fan on it. Moving air doubles the power handling capabilty. If powering unit down and right back on takes another 5 to 10 minutes, it is NOT a thermal issue. It would fail again in a minute. Regulators often run hot... they should have thermal grease or the silicone transipad thermal pads... they are grey in color.

This is NOT likely to be a problem with the power source at all but more likely with some setup parameter. Search your manual for subjects like "quantize" and also sampling rates.

Did you look here under support:http://www.bossus.com/gear/productdetails.php?ProductId=772# Also there is an update available under downloads. The Preset Protect function protects factory patches at locations 1-5 from being overwritten. It is shipped with the demo audio saved there and the preset protect enabled. Here is the manual for creating patches:http://cms.rolandus.com/assets/media/pdf/RC50WS03.pdf The rest of the manuals are under support. The manuals have hot links to each other for various subjects. You can reach their product support dept. by phone or email. There is a knowlege base with answers to questions about problems other owners have:http://www.bossus.com/gear/productdetails.php?ProductId=772#

well your book you got should tell you this, if you dont have one you can down a PDIF file from Behringher . All tho I would suggest you sell it while it is still working and research a new unit. Why is it every breaks down you will never get parts to fix it. I know . Im in the business, I can never get the simpelest of parts, aand they can fail even un used much they can go bad just sitting there waiting to be used . Good luck DFD, keep on playing