Hi There.
I bought this TV very cheap "as is", knowing it was broken. I took it up to the workbench today.
As soon as I hit the physical switch, I get a cycling on-off relay on the PS board. Front led would switch from red to green too
Then I removed the back cover. Lots of boards here. I recognize the PS, a Y_sus with its buffers, an X-sus and it¡s buffer (lower), a sound board , and a stack a other boards in the center that I guess would basically do the function of a MAIN all together (tuner, ext- inputs, extension card, etc)
First thing I see is some traces of water in the Y-sus Board, lower right side (see photo). I was so glad to see this, I was already checking for spares online for this board, but first I checked what would happen if I isolate this board, and...nothing... I disconnected all the wires to this board and the TV would still do the same.
Then I checked the X-sus board. The large 2-wire (HV I guess) plug would make no difference if I unplugged it. If I unplugged the other smaller ("TPVDA") plug, it would not click at all and would stay in green led but then I realized the hardware switch from the fron panel go "across" this board, so the power on pin would get interrupted after removeing this plug.
Then if I removed some random plugs in the "center" (main?) boards, to/from audio and PS to the tuner and input bosrds, the power on-off cycle would get much longer, maybe clicking after 10-15 seconds, but it would still not stay up.
During all this time, I checked both HV (I guess) 2 pin large sockets to X and Y boards and got 0 volts.
I am pretty lost in the diagnose procedure for this TV set, maybe anyone has experience on this?
Thanks in advance!!
Eduardo
I bought this TV very cheap "as is", knowing it was broken. I took it up to the workbench today.
As soon as I hit the physical switch, I get a cycling on-off relay on the PS board. Front led would switch from red to green too
Then I removed the back cover. Lots of boards here. I recognize the PS, a Y_sus with its buffers, an X-sus and it¡s buffer (lower), a sound board , and a stack a other boards in the center that I guess would basically do the function of a MAIN all together (tuner, ext- inputs, extension card, etc)
First thing I see is some traces of water in the Y-sus Board, lower right side (see photo). I was so glad to see this, I was already checking for spares online for this board, but first I checked what would happen if I isolate this board, and...nothing... I disconnected all the wires to this board and the TV would still do the same.
Then I checked the X-sus board. The large 2-wire (HV I guess) plug would make no difference if I unplugged it. If I unplugged the other smaller ("TPVDA") plug, it would not click at all and would stay in green led but then I realized the hardware switch from the fron panel go "across" this board, so the power on pin would get interrupted after removeing this plug.
Then if I removed some random plugs in the "center" (main?) boards, to/from audio and PS to the tuner and input bosrds, the power on-off cycle would get much longer, maybe clicking after 10-15 seconds, but it would still not stay up.
During all this time, I checked both HV (I guess) 2 pin large sockets to X and Y boards and got 0 volts.
I am pretty lost in the diagnose procedure for this TV set, maybe anyone has experience on this?
Thanks in advance!!
Eduardo
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