zenith tv dark picture

[tek33]

hi am workin a zenith tv model isz2045dt the picture is very dark
i bring the brightness full and i also bring up the bright on the flyback but pic is still dark.t found two badly caps close to the flyback i change them but still the same way.any ideas whould help

thanks
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when things get hard the lord dont walk with me he carry me

[The_AntiRAM]

Check each catode driving voltages with pattern test and oscilloscope.

Measurements have to respect values according to service manual diagrams.

[tek33]

i do not have an oscilloscope is ther any other thing i can do or checkh
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when things get hard the lord dont walk with me he carry me

[minnie]

Did you try turning up the screen control on the flyback?

[tek33]

yes but the pic is still very dark
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when things get hard the lord dont walk with me he carry me