I have this lcd that has no sound (about 2 sec.) And then at random intervals of time (10 ~ 40 sec.) and repeat the symptom.He both show the same aerial input and the AV.Some suggestions? Complete: as long as the sound goes, I show in the bottom right icon stereo (two symbols dif. s) with a periodicity of about 6-7 sec.si can not enter service mode ("i +, 5, P-, AV, AV). was either sound processor, quartz? ... soft? or another main board?Sorry if my english is not so good, from Cluj- Napoca, Romania, all the best!