Sony BraviaKDL-15G2000 fixing overscan? Is there a service menu?

[alessiman]

Hi,

I recently picked up this 15" TV as its the perfect size for old 8 bit computers like the Acorn Electron, Sinclair Spectrum etc.

However the TV has an overscan issue where it wont display the 1st lines of text/graphics 

There is an RGB Centering menu setting but that only fixes horizontal centering.  I am after a setting to fix the vertical sizing

Does anyone know if there is a solution for this issue?  TIA

[Piscie]

Have you tried to disconnect it from the power mains for a few minutes? Could be a power glitch and depowering it sometimes is enough to sort it out.