Dont work display and no sound boss me-5

To achieve a tone similar to Synyster Gates' A7X sound, you may want to start with the following settings:
Green channel:

• Bass: 5-7
• Mid: 2-4
• Treble: 5-7
• Presence: 5-7
• Gain: 7-8

Red channel:

• Bass: 3-5
• Mid: 3-5
• Treble: 5-7
• Presence: 5-7
• Gain: 8-10

When using the Boss MT-2 pedal, set the tone control to around 12 o'clock and the level to taste. This should give you a good starting point for a heavy metal tone.
It's important to note that these settings are just a starting point, and you may need to tweak them to suit your own personal taste, playing style and the room you're playing in.
Keep in mind that the MX112 cab will also affect the sound,so you may need to play with the eq settings on the head and the pedal to achieve the sound you are looking for.
Also, keep in mind that the sound of the DSL15H head with the MX112 cab will be different than the sound that Synyster Gates gets with his rig. However, the settings above should help you achieve a similar overall tone.

I think your headphones got a defect. visit nearby repair shop to know what`s wrong with your headphones in detail.

Most likely low power from the power supply. I would check this first.

Best to contact Roland directly. Here are the links-
Roland Company Contact Us
Support Roland

1. Make sure that you have the correct power supply plugged in.
2. If you are using the BOSS power supply, it could be defective. Measure the voltage it is producing and make sure it is correct.
3. If the voltage is correct, then the problem is inside the unit, and it will need servicing.

The half-way cord is the clue. Read up on unbalanced and balanced lines and TRS connectors.
One of these requires TRS connections and the signal is being carried on the RING of the TIP-RING-SLEEVE connector. Plugging in half-way the TIP touches the ring pickup contact. The emgs one MAY use TRS type cables and there may be a reason the signal and hot of these are reversed. If I could find schematics on all this equipment I could unravel the exact cause. You could make an adapter with a Stereo 1/4 inch plug and a 1/4 inch jack by wiring it to swap the tip and ring between them to use for connecting to the emgs guitar. ALSO verify you are using the SAME type guitar cable for both.OFTEN a TRS cable will NOT turn on the electronics when plugged into a guitar. Use an unbalanced instrument cable unless you have the XLR type output. Use of an adapter from the XLR type cable into the Boss will usually not work.

Plug your guitar into the input and a cord from one or both outputs to the inputs of whatever you are using. Meant to be run in stereo for best sound. Two guitar amps?

If all other controls are working, check IF they have a "Contrast" setting for the display. When those are at end of range, the display often is blank.

sounds like the true bypass line has been damagd. Should be easy enough to fix. Pop open the unit and do a visual inspection first, if nothing is noticeable then do a continuity check with an ohm meter from input to output with the delay efffect off. If you don't read a short in this situation then your problem lays within the signal path and its switched path.

Midi doesn't actually "make sound". If your trying to record the patterns you made on the DR-5 to the recorder you need to use an audio output(I don't remember if they are RCA or 1/4" on the DR-5.) The midi output would be used to"trigger sounds" in another device that has sounds built in, or you could also trigger sounds in a program that supports midi input.