Toshiba Hack Menu 536o6o

Here's the way to enter the service mode on the Toshiba XF550 (U) series.

WARNING! YOU CAN REALLY SCREW THINGS UP IF YOU CHANGE SERVICE MENU SETTINGS IMPROPERLY! WRITE DOWN EVERY PARAMETER'S HEX CODE (OR BINARY CODE) BEFORE CHANGING ANYTHING! You can do more harm than good by entering the service menu if you don't know exactly what you are doing.

ADDITIONAL WARNING Each time you enter the Service Menu to view or change the default factory settings there is a count made of each "read" and/or "write" of any parameter you view. Even simply reading each of the parameters is counted. This count (actually different counts for the number of reads and writes) is saved in NonVolatile "EEPROM" memory. These values are available for display in the Service Menu's special "Dynamic system and Self-Check Codes" menus. Be aware that entering the Service Menu, even if you don't change anything, is recorded in this "NV Memory" window. An authorized service technician can obviously see whether or not you've entered this area of the set's adjustments. Toshiba's service personnel could get really sticky about "voiding the warranty" because we've decided to fix things on our own.

* Turn the TV on. * Press the {MUTE} button on the remote and hold. Edited 4/4/08: As you stand close to the TV, make certain that you hold the remote low enough so that the TVs infrared receiver (located near the lower right corner of the front bezel) is able to see the signal from the remote. * Then press the {MENU} button on the TV's side . * Release both buttons. * There should be a red letter "S" on the upper left of the screen, with the Service Menu adjustment box next to it. * Use the {CH+} and {CH-} buttons to select the parameter of interest. (You can use the side buttons or the remote buttons.) * Use the {VOL+} and {VOL-} buttons to change settings. (You can use the side buttons or the remote buttons. You can also use the up and down arrows on the remote's menu/channel selection circular control pad. Take care not to accidentally use the volume

buttons or the up and down arrows in the central control pad before you write down all the default Service Menu parameter settings.) * Use the {EXIT} button on the remote to temporaily make the Service Menu adjustment box disappear. (The red letter "S" stays visible.) You can now adjust volume, change channels, freeze, etc. * Use the {MENU} button (remote or side ) to show the Service Menu box again. You'll also be returned to the first selection (R-CUT). * To exit, turn the power off. ----There are 22 service menu parameters available: R-CUT G-CUT B-CUT R-DRV G-DRV B-DRV BRTC (BRIGHTNESS CENTER) COLC (COLOR CENTER) UVTT (BASE BAND TINT) CNTX (CONTRAST MAX) SHRC (SHARPNESS CENTER) VBIS (VERTICAL BLANKING INTERVAL SETTING) CC (CLOSED CAPTION) ID1 (VBID) GG (GEMSTAR GUIDE) OPT1 (SET OPTION 1) OPT2 (SET OPTION 2) OPT3 (SET OPTION 3) OPT4 (SET OPTION 4) OPT5 (SET OPTION 5) SETID VOLX (VOLUME MAX) - Typically used to set a maximum volume level for a hotel room