LA37A450 has strange color choices

[saddle_au]

I was wondering if anyone has seen this type of failure before.

I have an LA37A450 tv that when powered up, shows wrong colors on the panel. Black is shown as red, white is shown as yellow, light grey as light blue etc...in fact no color seems correct at all. It doesn't look like a normal gamma failure with some colors changed. I measured the gamma voltages and they seem ok, but I replaced the AS15 on the TCON anyway, but this has made no difference.

The boards are:

TCON - T370XW02 VC
Power Supply - BN44-00220A
Mainboard - BN94-01768C

TCON -

VGH - 25.6v
VGL - -5.98v
COMF2 - 6.48v
VCOM2 - 6.48v
AVDD - 15.5V

Has anyone seen this type of thing before? I'm tempted to go into the service menu and see what panel is presently selected, but I know I could brick it if I start playing with panel choices.

All help appreciated. I'll close it up and load some screen images shortly.

[dick_barton]

Re: LA37A450 has strange color choices

Maybe someone has had a play with the Service Menu setting which selects the Panel Model.
Are you aware of any board changes?

[CapLeaker]

Re: LA37A450 has strange color choices

I remember a thread like that a while back. Things like that are in the service menu on the main board. I am guessing either one changed the panel or the main board on that TV.