Sony KVM1430A low contrast

[jhalphen]

Hi to all,
Hi @Bigboss80,

The CRT filament is powered by 15.6KHz pulse from a winding on the flyback transformer. Unless you use a meter capable of True RMS measurement, other types will give a +/- meaningless value.

Unless proved otherwise, your CRT heater is probably receiving the proper voltage/current. Is the neck glow a normal red/orange color?

I would investigate the main chopper power supply, on transformer T624's secondary, is the 120V DC line at the proper value?

Other members here probably have experience & advice about this Sony BE-2A chassis and ideas as to why your image is dim.

Best Regards
jhalphen
Paris/France