Editing Marshall MS-2 Troubleshooting

[title|Marshall MS-2 Troubleshooting] [summary_image|300285] == Amplifier won’t turn on == "Everything is hooked up but nothing happens!" === Battery is improperly installed === Make sure the positive and negative terminals match the + and - inside the battery case. === Battery is dead === Replace with a new 9V battery. === Won't turn on with A/C power === The connections may be loose. Use a volt meter to [http://www.ifixit.com/404|test for current]. == Amplifier doesn’t produce sound == "Getting power but my guitar won't do anything!" === Guitar may be connected improperly === Be sure you're using the proper cables and connected to the "input" jack on the amp. === Guitar isn't functioning properly === Try using another guitar on amp or use the guitar on another amp to find which device has the problem. === broken component on circuit board === There are many pieces on the board which could cause no sound if they are broken. Check [http://www.ifixit.com/404|this guide] out for more details. == Headphones aren’t working == "Got my sweet headphones in but I'm not getting sound from them" === Headphones are loose === Be sure you have the proper cables or adapters. === Broken component on circuit board === There are many pieces on the board which could cause no sound if they are broken. Check [http://www.ifixit.com/404|this guide] out for more details. == Speaker is hissing == "The hissing is disturbing my playing man!" === Speaker is faulty === Check [http://www.ifixit.com/404|this guide] out from replacing your speaker. === Broken component on circuit board === There are many pieces on the board which could cause a hissing sound if they are broken. Check [http://www.ifixit.com/404|this guide] out for more details. == Knobs won’t work == "Turning these knobs but my sound won't change." === Bad potentiometers === Check [http://www.ifixit.com/404|this guide] out for testing and replacing your potentiometers. === Broken component on circuit board === There are many pieces on the board which could cause your potentiometers to work improperly if they are broken. Check [http://www.ifixit.com/404|this guide] out for more details.