Picture looks dirty in corners

Loose contact [solder joint/s] at the circuit board. Contact any service technician.

Fault with main board. Damaged component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/

1) the batteries will be the same type and full charged
2) clean the contacts battery from dirty, dust, oxide or corrosion
3) retight the spring contacts battery with pliers for a GOOD contacts
4) open the remote.control and clean the keypads switch, from dirty, dust, oxide, Open contacts, or Bad contacts. they emite a good signal infrared from SYScon transmi vs Syscon receiver.
see the block diagram. If doesnot resolve the problem go to the repair shop TV for fix it.
God bless you

Did you replace it with an identical part? Should work fine if you did. I would contact Toshiba tech services for guidance on this matter. Have you tried it with an external monitor?

hi im having exactly the same problem with toshiba 40bv700b
eont come off standby tv only few weeks old

usually after 4 or 5 yrs EHT ( transformer that supplies voltage to tube ) becomes weak - then TV won't get ON.. means no picture no sound ..but LED blinks - in some TVs along with EHT 1 or 2 components like resistor, transistors, etc will also gets deffective .................. so solution is TV circuit board has to be checked to find whether only EHT is deffective or other components are also deffective - price of EHT will be between Rs.250 (US$ 5) to Rs.600 ( US$ 12) ........iam from bangalore.....i don't have any idea about EHT component's price & service charge in your area........this problem cannot be solved by user unless user is a technical person having idea about components (resistors, transistors,diodes,...etc..), having multimeter , soldering iron & other tools...so my suggestion call TV service engineer or contact toshiba service centre.........

Display IC seems to have gone. It will be a replaceable module. Only you have to figure out which one it is. Such thing happen in electronics. Look for any burnt or bulged IC.

Either the convergence or cracked sautering. Just had my tv repaired but now I have a double blur in the upper left corner.

Al, bring up your convergence grid (look in menu for it) and I think you`ll find that the set is out of convergence, if you can adjust the red up & down and the blue up & down your ok, if they won`t move in one or both directions the convergence IC`s will have to be changed out, hope this helps, BMW Rider

What are the labels on the lights? Timer/Lamp/Service and what color is wich?