Hey guys so I picked this Zoom 4n Audio Recorder up off of ebay AS IS and I figured I would give it a shot. Well got it in and the power switch was missing as I expected. I tried using a paperclip to turn it on but no go! So here goes.
Here's what I have done so far, tested that the board is getting power from the batteries. Reseated all the connectors. Ran it with as few boards as possible. Used a Microscope to search the entire three boards for a damaged/burnt components. Found out the wires coming off the Main Board go to the Aux Power Jack 5v 1AMP on the bottom. Tested to see if it would power over USB.
Also, I believe that this unit can be powered up solely by USB, am getting someone to confirm that. If so this would not power up over usb as well as not working with batteries.
Here are some pictures, the three boards snap together. I believe the smallest handles all the power. Give me ideas on what to start testing.
Here's what I have done so far, tested that the board is getting power from the batteries. Reseated all the connectors. Ran it with as few boards as possible. Used a Microscope to search the entire three boards for a damaged/burnt components. Found out the wires coming off the Main Board go to the Aux Power Jack 5v 1AMP on the bottom. Tested to see if it would power over USB.
Also, I believe that this unit can be powered up solely by USB, am getting someone to confirm that. If so this would not power up over usb as well as not working with batteries.
Here are some pictures, the three boards snap together. I believe the smallest handles all the power. Give me ideas on what to start testing.
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