X68000 on SONY Sony SDM x52 monitor

[emerald danjon]

Hello,
i try use this VGA TFT Monitor with the X68000 and i get Out of range 31.4khz/55hz.
the X68000 using VGA works on ACER GD245HQ TFT and a lot of others Monitors...,¿what happen with this  SONY?
i want see how X68000 looks in this monitor...is little and looks really Slim,and i got very very cheap  ,
any idea? i cand do something or just impossible to work?,
thanks in advance.

[skpstmgs]

Just looked up the manual for the Sony online and it says it supports a vertical frequency of 56-75 Hz, so maybe it's just barely out of range?

[emerald danjon]

Yeah,no way for do nothing 
was think all VGA monitors works on 31 Khz...,
everyday i learn something.
thank you anyway.
Greetings.