Toshiba 23PB201EJ
Plugged in electricity …… the green indicator is on ……
The BL lamp has also been on …… but the screen is blank …… .. there is no OSD appearance.
If you leave it for a while… ..sometimes the BL lights go out for a while then turn on again ……… and so on over and over again.
Try checking the Tcon voltages ... the results are present ...
Try FLASH….
The results do not change….
Check the dc-dc voltages… ..5v, 3.3v, 2.5v ALL present….
Observe the motherboard….
Tuner that is used type …… .TDSS-G221D …… ..
Tuners of this type are most likely to have problems …….
Try removing the tuner ...
... ... the screen can come out "blueback" ... and the OSD can appear ...
This type of tuner can be replaced with the TDSS-G224D equation type.
Or replaced by the TDSS-201D type with a few modifications as shown.
