Found this over at Android Central. Thanks to
egg_head 
http://forum.androidcentral.com/veri...-revealed.html
I waiting to see the missing Tv-Out functions!
Egg_head has discovered that Samsung devices seem to have quite a string of hidden menus. Now, these menus are apparently found on all Samsung devices, just not in the same location, but they can sure do some nifty things. Ranging from a full device shut down by holding the end key button to various different audio settings these additional menus can allow even more customization then we had even imagined.
For Epic users:
TESTED AND FUNCTIONING WORKAROUND (thanks Aero!):
Enter GPS debug/settings application by typing *#1472365#
click "Setup" tab
click "position mode"
Click "starting mode
Enable "Cold Start"
Back out.
Other Codes (thanks Dlwicksel!):
*#1472365# - GpsSetup
Very useful tests for the GPS!!!
Setup/Position Mode/ Operation Mode: (Standalone/MSAssisted/MSBased) Starting Mode: (Cold Start/Warm Start/Hot Start) Session Type: (Single Fix/Navigation) Setup/Command allows you to test the GPS and look at the results
*#INFO*1111# - Testing
Phone information/Battery information/Battery history/Usage statistics
Very useful diagnostics
*#0*# - LCD TEST
red/green/blue/melody/vibration/dimming/megacam/Sensor/touch/sleepmode/LED/RECEIVER
Very useful tests for the LCD
##RTN# - Real-Time Network (RTN)
Lots of useful information, like the Life timer / calls and Life Byte usage stats
*#DATA*727336*# - DataCreate
Call log/System Space/User Space/Phone Book/Schedule/Message/Ring tone/Screen/IMEI/ESN/Error log
Very useful information!!!
*#0228# - BatteryStatus
Very useful real-time battery statistics!
##UPST# - PhoneUtil - UART/USB
Universal Asychronous Receiver/Transmitter / Universal Serial Bus
Most likely controls how you connect technician testing equipment to test out the UART/USB subsystems
##DATA# - Data Programming -
(Verizon customers: whenever prompted for SPC enter 000000)
User Name/Advanced/Restore/Enable HFA/DSA Server/MMSC/URL/Multimedia/WorkMode/WiMAX
##DEBUG# - Debug Menu -
(Verizon customers: whenever prompted for SPC enter 000000)
Debug Screen/Test Calls/RC Data/HDR/1X Selection/Voice Privacy/DTMF Set/Korea Mode Set
##AKEY# - Data A key menu -
(Verizon customers: whenever prompted for SPC enter 000000)
##<MSL># -
(Verizon customers: whenever prompted for SPC enter 000000)
Program your Mobile Device Number(MDN) and Mobile Station ID(MSID)
##GPSCLRX# - Reset the GPS -
(Verizon customers: whenever prompted for SPC enter 000000)
##SCRTN# - Changes DSA back to Factory -
(Verizon customers: whenever prompted for SPC enter 000000)
##TTY# - TTY TestMode
*#0842# - Device Test - Vibration Test
*#0673# - MelodyTest
*#7780# - Factory data reset
*#232331# - BluetoothTest
*#2664# - Touchscreen Accuracy Test
Nice if you want to see how accurate your touchscreen is
*#0283# - ServiceMode - PACKET LOOPBACK
Need to hit home to get out - I couldn't get this to do anything but it could be the data packet that you sent coming back to you on the loopback device
*#767*3855# - Factory Format - WARNING!!!
Will go to Hands Free Activation
Nice if you'd like to reactivate your phone, it will do so automatically
*#197328640# - ServiceMode - Menu key to bring up menu - WARNING!!!
Will turn off your radio - Not sure what this does
*#0011# - ServiceMode - Force Closes - Menu key to bring up menu
Will turn on your radio, and then reboot
*#32489# - ServiceMode - Force Closes - Menu key to bring up menu
Doesn't seem to affect the radio
*#2580# - ServiceMode - Not sure what this does
*#0782# - RTCTimeRead - Displays Date and Time
*#745# - Sec_RIL_Dump - Has the LogFileList
Copy to phone memory/Copy to SD card(grayed out)/View Ril Log(grayed out)/Clear Ril Log/Exit
Probably dumps the logs for the Radio Interface Layer (RIL) between the Operating System and the phone's radio and modem
I haven't tested a dump yet
*#9900# - SysDump
copy logcat/dumpstate/dumpsys/enable debug log/copy/watchdogdumpstatelog
Probably dumps the logs for the Operating System kernel
I haven't tested a dump yet
Updated above info. Wherever instructed to enter an SPC code, dial 000000. The differs from Sprint customers who have to enter an MSL code, which they typically don't have.
Ok, so I checked and you DO need testmode enabled to enter these menus.
I already had test mode enabled which is why I was able to get into them.
To enable test mode, do this:
Go into the Dialer and enter *#83786633 then press the Home key
Go back into the phone dialer and enter *#22745927
Now a box will come up asking for the SPC code. Enter 000000
Press the Hiddenmenu Enable radio button.
Now you can use these codes.
Hell yes!
After a few hours trying to uncover the dialing code string for the Fascinate, I finally figured it out!
I've dug into *almost* all the AndroidManifest.xmls to compose a list of hidden menus you can gain access to.
I shouldn't have to say it, but I will..
I'm not responsible if you brick your phone.
Play with these things at your own risk.
Even if I said it's been tested by me and confirmed to work.
It's not my fault if your phone takes a crap on you.
Make a backup of your phone.
I will be doing some more testing and will uncover more hidden menus, but this is what I have for now..
Some members were unable to enter these menus and I discovered that you need to enable 'Hiddenmenu' to do so.
To enable this menu, do this:
Go into the Dialer and enter *#83786633 then press the Home key
Go back into the phone dialer and enter *#22745927
Now a box will come up asking for the SPC code. Enter 000000
Press the Hiddenmenu Enable radio button.
Now you can use these codes.
The dialing code string you have to use is *##
Here are some things you can gain access to
Audio Tuning
*#28346#
Several audio tuning menus.
I've only tested the two items below:
To silence boot and shutdown audio go to Situation/BOOTSOUND and turn the values to 0. I've tested and confirmed this works.
To silence the volume key audio when turning the volume up/down go to Situation/VOLUMEKEY and turn the values to 0. I've tested and confirmed this works.
Full Bat Popup
*#3844228#
This allows you to disable the full battery pop-up.
I have tested this and it works successfully.
HwCodec
*#0002*28346#
Audio path volume controls. Most importantly, it looks like there's a sidetone adjustment.
I have not tested any of these items yet.
Shutdown
*#7594#
This enables you to shut your phone off by long-pressing the power/lock key.
No more pop-up confirmation.
I have tested this and it works successfully.
I've also discovered by doing this, it will disable the puzzle/glass unlock screen.
Personally, having to push a button and slide the screen is redundant.
I like the one-step process.
Diag/Testing Mode
*#4636*1111#