My Bosch 1276 DVS belt sander abruptly stopped working. Could it be the switch?

Bosch 1276DVS 0601276739 4 24 Belt Sander Parts

NEED A AUTO REPAIR SHOP TO RESET IT ONLY THERE COMPUTER CAN DO IT OK

Unfortunatly without a way to check the switch (multimeter) you will have to take it to a repair depot. Got to Boschtools.com and look under "find a service center".

Remove the dust bag and unplug sander for now. Everywhere you see an access hole (fan area, dust port, back of sander blow thru the tool to remove lodged dust that clogged the system, Also look for broken belt pieces in the back of sander. Then while running (remove belt) blow again thru all the ports to try and reomve as much contamination as possible. When finished you can feel to see if air coming from dust bag port, it not you still have a clog that might need more work. If I have clarified your request would you please rate this response accordingly and thank you.

Your drive belt is broken or off the pullies.

This means the sander has been droped and the pad support and/or the bearing orbit has been bent, maybe even the motor shaft. Never leave any power tool sitting on a bench, always set it on the floor, it will end up there at some time anyways. You can try replacing a part at a time and spend a lot of money and time, but is it worth it?

http://www.bshappliancecare.com/Bosch/boschspares.html

Hi
Definately sounds like bad switch or contact to the switch

If I am correct, when holding the tool in the normal operating position there should be an oblong cover on teh left hand side nea the back of the tool. It should be held on with a screw. remove this cover and you can access the belt . MAKE SURE THE TOOL IS UNPLUGGED. the belt should pull off/push on with a bit of force. Turning the pulleys as you put it on will help it go on evenly. If it is too stiff, put the belt in some boiling water for a minute or two to soften it up a bit.