I am working on a QN750Q8FNBFXZA. Dead except the standby light. It blinks what appears to be 1 3 1 2. 1 long blink, pause, 3 short, pause, 1 long, pause, 2 short, pause, repeat. A service manual would be very helpful, or if anyone knows these error codes. Thanks!
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QN750Q8FNBFXZA Service Error Codes Needed - Error code 1-3-1-2 ? Dead set, only blinking standby light in repeating sequence
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there are no error code at yours brand. the Front LED flashing sequences indicate boot loop with out logo / BL. so the Kernel try to boot the set but there are panic at some parts like LED/BL or Panel CLK.. need to trouble shooting the issue disconnect MB from PSU to check BL come on or not.... disconnect LVDS to see TV make boot complete and the Audio Optic ports lit on and remain on.
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Originally posted by mecha1166 View PostThanks for writing. Panel lights when main is disconnected. Dead set if all is connected and only LVDS is disconnected. Mainboard issue?
you have 75 size, so you will have on the panel buffer boards U ribbon flat cable on each side.... post photos on the Panel buffer boards any try to put back the LVDS in place and disconnect the U flat ribbon cable from each side at time then turn on.. see if the set starting and if it bring 3/4 screen of picture or not.
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Originally posted by mecha1166 View PostI think there was a communication error. Let me start over. If I disconnect, only, the mainboard wire going to power supply, the backlights come on 100% good.
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Originally posted by mecha1166 View PostDead set if only LVDS is disconnected.
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Originally posted by mecha1166 View PostIt seems to me if I disconnect the mainboard and the panel lights, then the problem might just be the mainboard. A tech from Funai once told me to disconnect the main and if the panel lights, then the problem is the main. One hundlod pocent, he would say.
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