7020s tuner problems

[vagoss]

I can only see a few channels. Changed the tuner inside and the same. What can it be ? Any clues. Are there any schematics for this box, power supply, ect.

[benny/9]

I can only see a few channels. Changed the tuner inside and the same. What can it be ? Any clues. Are there any schematics for this box, power supply, ect.
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after changing the tuner and you have the same result
it cant be a faulty tuner, have you tried the obvious and
reflashed the box to eliminate a software problem , i dont
think it's the psu or you would'nt get anything

[vagoss]

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after changing the tuner and you have the same result
it cant be a faulty tuner, have you tried the obvious and
reflashed the box to eliminate a software problem , i dont
think it's the psu or you would'nt get anything


If reflashing the box means putting a new image, yes i've done that. Do you mean with jtag ? Since i can flash the normal way is there a need to do it that way.