We finally had another quick look at this Goodmans LCD.
The boards are as follows:
PSU. Proview Technology Ltd. Model MLT198H (rev.16)
Main signals board. 200-100-GF323XB-BH
Tuner panel. 200-000-GF323XB-BH
To recap:-- Apply power, red standby. Press ON, blue light, backlight OK, but no OSD, picture, or sound.
Remove inspection panels, and all PSU voltages present and correct.
Any ideas, but especially a manual.
The boards look like this:--