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There are 2 possibilities, one is your loosing your audio B+ voltage or you have an issue with the main board where the sound comes from...if you have a meter you can test the voltage with the set working correctly and see if it drops down when the sound goes out...if that voltage is ok then its a bad main board...One other question does the icon change on the TV when the sound goes down, like it it was on 10 does it drop to 1 or 0 when the sound goes out?
Hi Ansari
It sounds like a main board problem. The control voltage that goes to back-light inverter board; from the main board, goes down. Contact any service technician. This is not a user repairable fault. Gopakumar Gopalan Google
I would open it up (assuming it's a desktop pc not a laptop), and make sure the sound card (if it's an expansion card and not built-in to the motherboard), is properly seated (all the way in) in the expansion slot.
Sounds like the timing belt tensioner. I have that problem. Rattles at low rpm, goes away as you acceralerate. Looking to have timing belts changed and tensioners replaced.
sounds like the DM3 isnt powering up the ballast to light the lamp or the ballast may be faulty. i would suggest trouble shooting the DM and ballast voltages.
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