Samsung LE37B551. White picture

[Davy]

Have Samsung LE37B551, you can just about see the picture and on-screen menu but they are far too bright.

The PWM on pin 3 to the inverter from the main board doesn't alter any, voltage or waveform when viewed on a oscilloscope no matter the brightness setting.

Checking on the bench it did fire up OK a second or two then gradually turn to 'excessive white', just like some CRT screen faults.... it only did this once.

Anyone know how to reset the CPU and if a manual is available thanks.

Dave