Re: have 2 amps, 1 for subs, other for speakers. The one...
This can be caused by too low of an ohm load, such as wiring subs in parallel at lower ohms than amp recommends. Or short speaker to body of car can cause it, or amp could have an internal problem. Like stated above try each speaker or disconnect one at a time to see if it is a speaker/wiring doing it. If amp gets too hot can also do it, but often it is overcurrent in the amp if it does it with high volume. Another less common issue could be lack of power so amp is drawing voltage too low for it to run, like if your fuse/wiring has a bad spot cutting down current or is not large enough/corroded/bad ground/etc.
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1. Back up all your data.(or not)
2. Turn off the phone.
3. Press and hold the "Volume Down" and "Power key" at the same time.
4. When the phone vibrates, release the "Power key" ONLY.
5. When the Android recovery screen appears, release the "Volume down key".
6. Press the "Volume down key" until "wipe data/factory reset" is selected, then press the "Power key".
7. Press the "Volume down key" until "Yes - erase all user data" is selected, then press the "Power key".
8. Press the "Volume down key" until "reboot system" now is selected, then press the "Power key".
9. They phone should now shut off and restart.
1. If your Samsung Galaxy S II is frozen, Shut the POWER OFF, take the battery out and put it back again.
2. Hold the Volume Down button
3. Briefly Press and release the Power button
4. A menu will then appears that let you allows for Fastbook, Recovery, Clear Storage, and Simlock
5. Select Clear Storage by pressing the Volume Down button
6. Quickly Press and release the Power button
7. Select Volume Up for YES and Volume Down for NO
If the above procedures doesn't work. try this another method:
1. Turn the POWER OFF, pull the battery out and put it back again.
2. Simultaneously press the Volume Up, Home and Power button
3. If the Samsung Symbol appears, release the Power button
4. A Boot Menu will then show, Use the volume up/down to choose and home to select.
Try this reset-press the (power+the volume down) keys till the phone vibrates for about 8 to 10 seconds . See if it switches ON .. If not wait till the Battery is completely drained. Then connect the charger .. Leave it for about an hour and see if it has switched ON on its own .. Else try the reset once again
Make sure you backup your files by connecting it to a PC (if you have access to one) via USB cable,you will have to do a hard reset, otherwise there is no other way to get past the lockscreen (unless you have a recovery option with your email address)
Below is the process to tell you how you can hard reset your Samsung tablet (should work with any tablet):
Ensure that the Samsung tablet is powered off.
Press the Power and the Volume Up button together till the device displays the start-up logo.
Once the logo is displayed, release the buttons and wait till the device enters the Android system recovery mode.
On the displayed screen, use Volume Down button to go to the wipe data/factory reset option (Volume Up and Volume Down buttons are used to highlight the displayed options on the Android system recovery screen).
Once the option is highlighted, press the Power button to select the option. (Pressing the Powerbutton in Android system recovery mode selects the highlighted option.)
On the next screen, press the Volume Down button multiple times till the Yes -- delete all user data option is highlighted.
Press the Power button to hard reset the Samsung tablet device while clearing the dalvik cache along with the process.
Once your device is hard reset and rebooted successfully, you will see that the unlock pattern obstruction is also gone, and you can now set a new unlock pattern on your Samsung tablet.
Take a microSD card out of the slot. (Empty the microSD card slot.)
Press and hold down the power button for a few seconds while pressing and holding down the "Home" (Silver Push Button) button. (Both "Power" and "Home" buttons must be pressed down until he see the phrase "upgrade system activated" in the middle of the screen.
Release both buttons once the phrase "upgrade system activated" appears on the screen.
Wait until it reboots. You will see the following sentences on the left top corner of the screen: Can not find any update image. Press MENU/KEY_VOLUMEUP key to init SD card, Press BACK/KEY_VOLUMEDOWN key to cancel.
Press the "VOLUME UP" key. The volume up key is located at the left side of the unit and the button is closer to the built-in camera than the volume down button.
Wait until it finishes making a partition and shut down the system automatically.
Once the unit is turned off, your system will be reset to the factory settings. Thus, your previous data are lost at this point.
make sure it's well ventilated. If there's no air flow, then there is no way of cooling down and to protect itself it will shut off. Make sure the speakers are wired correctly as per amp specs. too many subs or subs connected improperly can draw too much current and shut the amp off, but you will notice this when you turn up the volume to a certain point and the amp shuts down.
It sounds like your amp is going into protection. I know it's frustrating, but this is actually a good thing. If you subs you have are drawing too much power and the amp can't keep up, it will shut off instead of melting the board. Usually, the protection mode only last a few seconds. The user normally turns the music down that the protection shuts off and the music plays again. I recommend looking at a larger amp for your subs, if you are going to play them that hard.