1. Sympton- M8RR models (32/39/42LN51 Series, 32LN49 Series) can be observed audio mute automatically.2. Reason- 18P cable (Main Board to Power Board) has defect of contact problem. If there is problem, 3.5Vst power can decrease in a moment. At that time, power reset circuit can be enable. The power reset circuit is connected with Audio mute circuit. So, the problem mute automatically can happen.3. How to improve.- 1 step : Take away 18P main to power cable (harness)- 2 step : Exchange the 18P main to power cable new one. (The new cable part number is same. But, there is some change in connector)- 3 step : Add tape to fix 18P cable nearby cable wafer. More detail position, refer the attachment picture.- 4 step : Download new S/W. The new s/w can recover the problem by itself. New s/w is File2 :450D_m8rr-PAL_r2453_v03.01.15.bin change the file name extention from "bin.x" to "bin" The detail S/W download method, you can find it attachment.File1 : SVC reportFile2 : new s/w file -> change the file name extention from "bin.x" to "bin"
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