Humax 5400 no picture

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#1
hi
today i got a HUmax 5400 receiver (Humax IRCI 5400z,ToH3.3 HoT 7.1 ) with powersuply fault( fault in chopper transformer in PSU). all power lines are come double valtages.
then i have change tottal power suply bord now receiver working and can search channels. and LNB signal is OK but i cannot see any channels( no Picture)
what should be the problem? i thing some time its a hardware fault. if anyone know any how to repaire please help me.



regards.
 
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