Re: LG Plasma 60pk950-UA no picture or sound
OK, we're close. It is either the Y-buffers or Y-sustain.
At this point please undo both connectors P104 and P105 on the Y-sustain board (refer to document for locations.) These connect to the buffer boards. Leave all screws in place. Then power on set and check these voltages. Are they as they should be?
NO:- Repair/Replace Y-sustain. Limited repair information available, no schematics, so replacement is advised, although some basic tracing can be done.
YES:- Replace Y-buffer(s). (Generally considered non-serviceable due to construction.) Locate which board is causing the fault. To do this try plugging in only one board at a time. There is a YB TOP and YB BOTTOM. Remember to isolate the connection between the two at all times. Check voltages. If the isolation of one board causes the voltages to come up, replace that board. (The panel may or may not work with the board removed. It could display half an image, no image, or just strange patterns.)
OK, we're close. It is either the Y-buffers or Y-sustain.
At this point please undo both connectors P104 and P105 on the Y-sustain board (refer to document for locations.) These connect to the buffer boards. Leave all screws in place. Then power on set and check these voltages. Are they as they should be?
NO:- Repair/Replace Y-sustain. Limited repair information available, no schematics, so replacement is advised, although some basic tracing can be done.
YES:- Replace Y-buffer(s). (Generally considered non-serviceable due to construction.) Locate which board is causing the fault. To do this try plugging in only one board at a time. There is a YB TOP and YB BOTTOM. Remember to isolate the connection between the two at all times. Check voltages. If the isolation of one board causes the voltages to come up, replace that board. (The panel may or may not work with the board removed. It could display half an image, no image, or just strange patterns.)
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