Brothers I tell you that I still have doubts about the operation of
Good evening, you do not need to know how the STR in question works, what you need to know is how a switched source works, how it is regulated, how it is made up, how it is repaired or how repairs on switched sources are addressed. But to be more precise in the assistance, even if you have made a similar query before, you have to mention the brand, model and chassis of the TV you are repairing ...
Pablo friend. when the tv. It is only connected to the network, how long is the + b. and when disconnecting the tv. the main filter is loaded yes or no
friend. Answer what other colleagues tell you to continue guiding you, but comment on the brand, model and chassis number of the TV.
FRIENDS THE CHASSIS IS KS9A-AA41-01026C, THE DETAIL IS THAT THIS CHASSIS MODEL DOES NOT USE OPTOCOUPLER AND ALSO USES THE REGULABLE ZENER 431 THERE IS THE DETAIL. AND OF course, IF THE SOURCE DOES NOT SWITCH, WE DO NOT HAVE + B, SOURCE STAMBY, ETC. AND THANKS AGAIN.
That board must have some component in the source that is not right. The other would be that it has short output. Some diode or capacitor.
You can also have cut-out of the primary in bobiomnado. Where the maintenance voltage goes to the regulator.
Printed cut on either side or just where the transformer pins go.
See if the R 840 of 22k is on
