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Check that the post lamp color wheel mirrors or any other moving parts have not been damaged when the lamp blew or that circuitry hasn't been spiked. toshiba rear pro's are well known for shock-wave damage
Sir the problem of your unit is the lamp try to replace it it is much better to use a gloves and wash your hand after replacing the lamp because this lamp contains mercury. follow this steps.
1. Unplug the unit to main ac outlet. Remove the bulb housing cover from the back of the TV. Using a screwdriver, carefully remove the cover to reveal the old bulb. Using a cloth, remove the bulb from the TV by first unplugging it from the wiring harness. Carefully rock the harness back and forth until it comes free from the bulb. Push in the bulb slightly and turn it a quarter-turn to remove it from the bulb housing. 2. Install the new bulb. Do not touch the new bulb with your fingers, as any grease or fingerprint from your hands will damage the tiny mirrors in the bulb. Instead, carefully handle the bulb using the cloth. Insert it into the bulb housing and secure the door. Test the unit. Plug in and turn on your Toshiba TV and make sure that the new bulb is installed properly and that the image looks crisp.
3. Reset the lamp time counter. Each Toshiba TV comes with a lamp hour meter stored in its software. If you do not reset the lamp timer, the unit may stop operating when it gets to a certain time (refer to your manual because each Toshiba TV is slightly different). To reset your Toshiba lamp timer, turn off the TV, wait 10 seconds, hold down the "on," "menu" and "input" buttons on the remote at the same time, and turn the power back on. A yellow light should appear in the bottom corner of the TV indicating that the lamp timer has been reset. Hope this help good day and best regards.
Web site was no longer available last time I checked. HOWEVER...if you go to www.fixyourdlp.com they have step by step instructions. It is really quite simple. I have changes mine twice in the 5 years that I have my 56" Vivitek. Start out by unplugging the TV. On the back you will see 2 screws to remove the lamp door. Once open you will see the lamp holder which is also held in by 2 screws. Once they are unscrewed the canister and lamp can be removed. Use rubber gloves when replacing the bulb. You will need a phillips screwdriver and a needlenose pliers. There is one phillips screw on the side of the bulb to remove and a nut on top that needs to be removed. Pay attention to the 2 wires connected to these points and be sure to put them in the same position when hooking up the new lamp. Once the screw and nut is removed, you will see a spring clip extended from behind the lamp to the front of the lamp container. It clips in the front and the tention holds the lamp in place. Remove the spring clamp and the lamp will come out. Put your new lamp in place, replace the spring clamp as it was (This is the hardest part because of the tention of the spring and getting it back into the cutout **** for the wire spring), then replace the nut and phillips screw and you are ready to plug it back into the TV. Be sure to replace the lamp box properly. Look at the 2 wire connections and align it with the connections inside the TV. Once inserted, tighten the screws on the box, replace the lamp cover and tighten those 2 screws and you are finished. Plug your TV back in and turn on your TV. NEXT...remember to reset your lamp timer when finished. That is done with your on screen menu. Go to System Info and look for "Reset Lamp Timer". Once there, select "YES" to reset the timer to zero.
Try unpluging your T.V. for 5hours+, then turn it back on. Worked for It's called a "hard reset" by sony.
Do the following steps
Check the Sony remote for a button labeled "Sleep." This allows you to cycle through the sleep settings and determine how long you want the TV to remain on.
Step 2 Press the "Sleep" button. You'll see a number come up onscreen: usually 15 or 90. When you press it again the number changes, moving up and down in increments of 15. This is the number of minutes the TV will remain on before it goes to sleep. As you cycle through it, you should see a setting with the words "Sleep Off" appear onscreen. If you leave it there, the sleep setting should cancel, allowing you to turn the set off when you like. If you miss it, just keep pushing the "Sleep" button. It will continue to cycle through the options until "Sleep Off" appears once again.
Step 3 Access the timer function to shut off the timer by pressing the "Menu" button, then cycling through the onscreen options until you reach the "Applications" setting. Press it, and then cycle through to the "Clock/Timers" option.
Step 4 Highlight the "Timer 1" setting and press the "+" button. If it's showing a given time, you'll need to deactivate it. Use the up and down arrows and move through the possible options until you come to the "Off" setting. Leave it there; that should shut the timer off.
Step 5 Repeat the process with the "Timer 2" setting, a little further down the "Clock/Timers" menu. Set it to the "Off" position just as you did with the "Timer 1" setting.
Step 6 Press the "Menu" button when you are done to exit the menu and return to the screen. You should be able to view the Sony TV as normal with no danger of it turning off.
do this. press and hold device and menu button on set for 5 seconds. this will retrieve a 2 digit error code .. the led will flash the first digit and pause the flash second digit. This unit is known to have capacitor problems on the power board. getting to these capacitors involves taking alot apart. let me know error codes and we can continue troubleshooting
So far I have entered the service menu (both menus together) then selected Lamp Replace (option 14) and then pres ok to reset. Version and Lamp (option 11) now reads Lamp life (Khr) = 8 and Lamp use (Hr) = 0.
If you replace the lamp and need to reset the Lamp Timer Reset procedure is:
With The Set In Standby Press Display, 5, Vol Up, Power on the remote control
Press Jump 3. Or,
To Display The Lamp Time Press 2 Nine Times.
To Reset Press 3, Mute, Enter. One of these should work on your model. Make sure you replace the bulb first. There is a possibility that the ballast could be damaged by a defective bulb as well.