Re: Reading the TV schematic
Hello again betwixt.
I am sorry, but I have forgotten to put the other part of the schematic that has the high-voltage. Of course, I know what is the primary side and the secondary side. When I asked if the
the high-voltage transformer is at the secondary side of the PSU? I was referring if that high-voltage transformer, that generates the 25kV, is at the secondary side of the T701, since that you said that the symbol that is at the negative side of the capacitor C705 (that is an error) belongs to the secondary side, and on that part of the high-voltage transformer we have that same symbol. Please, see the figure below.
About that feedback winding, how that winding is used to oscilate? What makes the transformer oscillating it is not the IC702?? I can not understand that winding. Could you explain me?
Another question, about the D707 and D708, is if that part is on the primary side or in the secondary side? I ask that again because, as you can see, there is again that symbol that you said that is referred to the secondary side of the transformer. If so, the high-voltage transformer (25kV) is at the secondary side of the PSU right? Do you understand what I am trying to say?
The last question, but not the least:
In some exceptional circumstances, the TV chassis can be connected to one side of the rectifier bridge (D701 - D704) but it is very rare because it makes all the metal parts dangerous to touch and all exposed parts have to be individually isolated, including the antenna socket, AV sockets and headphone socket. In this case, how can I see if this TV has the chassis connected to one side of the rectifier bridge?
BTW, were you would suggest me to connect the negative side of the multimeter in the primary side and on the secondary side in order to make some measurements?
All the best and thank you again very much.