21 inch daewo tv totally dark screen model dta-21bra
Friend when you say what voltages are normal what do you mean? What voltage do you have for video amplifiers.
How much do you have on the screen voltage and see if the trc tube filaments light up?
Hi.
Comment N * of chassis. And all the tensions that you say are ok.
See if it shows OSD, change channel and volume ok. So have a more complete picture of how that board works.
I suggest a general look to see the state of components and welds with good light and magnifying glass. Clean plate. Check if the plate is not broken. This also for tube plate.
the cathodes rgb reach 140 v and in the abl it has 23v, and the filaments do not see that they are orange only when turning on the same buaca to illuminate the screen all over the shore with white color but only when it turns on and very minimum across the edge of the screen, and the TV is the chassis number cx-t221SB and if you listen and change the channel
if friend himself it was not observed that the other screen turned orange on the cannon if
It will not give image if it does not turn on filament. Above, the colleague tells you to measure from the output of the flyback corresponding to H (filament) check if the flyback is not badly welded that pin. And measure continuity from the latter to the tube plate. Remove it before. And by the way measure the 2 pins of the tube corresponding to filament if they have continuity. It may be cut in the worst case.
At the fly's exit the form goes to a card check that it is well welded. The same on the tube plate.
If you do not have an R at the fly pin output,
Sure you have it on the tube plate. Check that you dial. It is of low value. Check that the form is not cut.
Measure if the flyback draws tension
Aver comments on the other flyback output that tension you have once you turn on the TV and spend a few seconds
friend thanks for your help I checked and if there was high tenure in the flay I measured the filaments and only two of them gave me continuity prove with another screen and it looks like it was the screen thank you very much for your help
ace 8 minutes carlosrangel's Avatar
carlosrangel
friend thanks for your help I checked and if there was high tenure in the flay I measured the filaments and only two of them gave me continuity prove with another screen and it looks like it was the screen thank you very much for your help
In the. Tube pins just have to give continuity 2 pins. What are the filament being. If you measure continuity elsewhere you have the tube short. He doesn't comment exactly where those pins correspond.
He did not understand me or I was not clear.
These pins correspond to filaments or some of the cathodes (KR-KG-KB-) or any of these with G1?