Question about Toshiba TW40H80 40" Rear Projection Television
Power on by remote produces blinking power light. Reset power by removing power from AC outlet. Power on by remote produces normal startup - good picture and sound. Picture begins to display convergence color problems intermittently. Picture turns to black with blinking power light.
The problem with the picture blacking out and the red LED blinking is probably a bad connection on two power supply capacitors. They will be labeled, C809 and C810. Common fault with this chassis. Now for the convergence, do not waist your time re soldering the convergence IC's. Simply replace them and your problems should go away. Good Luck
Posted on Nov 07, 2007
The key to this repair is "intermittant convergence issues".
1) Locate convergence amps ( large IC's mounted on large heatsinks.) On PCB in back.
2)Remove circuit board
3)solder any/all bad connects
4) reassemble - test run
Note:Fuses are not an issue at this time.
Note:Convergence amp IC's should be replaced for durable,
Posted on Oct 25, 2007
If you are good at electronic repairing then try this
any/all bad connects on convergence board.
Convergence PCB is up front,behind speaker grills/access panel
2.Check both 3.15 amp fuses.Re-install--usually,
no further adjustments needed.
To improve pix quality,remove rear cover--clean RGB lens caps w/soft cloth.
PS:If you are not good at this then there cant be a better thing than giving it for complete servicing
Posted on Oct 12, 2007
Ok! maybe you have defective convergence correction circuit! sir do you have experience in electronic repairing?
Posted on Oct 12, 2007
Tips for a great answer:
None TV is powered off. Normal operation.
Green TV is powered on. Normal operation.
Green 1. TV just plugged into AC outlet.
Wait until blinking stops before turning on (approximately 1
minute). Normal operation.
2. AC just restored after power failure.
3. TV Rebooting after System Reset was
4. TV Rebooting after power fluctuation
or receiving abnormal digital signals
from digital channel, or digital device.
5. You have begun the procedure to
update software from an authorized
flash memory device.
For detailed information, see the instructions that accompany
the authorized software update. IMPORTANT: Do not
use unauthorized software at any time.
Green TV just powered off and lamp is
Starts to blink 30 seconds after turning off TV. TV can be turned
on before blinking starts or after blinking stops, but not while the
indicator is blinking. Normal operation. hope it helps regards shaun
Green TV powered off and auto-on timer is set. Normal operation. TV can be turned on at any time.
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