Sony KDL-40V3000 picture getting brighter!

[Lampmanpaul]

Hi Everyone,

I'm the new guy so a big hello to all

I've a Sony Bravia KDL-40V3000 which powers up good with good picture and gradually turns slightly Bright/White over 30 min with slightly distorted picture.

I have checked the T-CON board ribbon cables, removed them from sockets, cleaned and reseated. No change.

I've also collected the following GAMMA voltages on the test points.

VGMA 1. 15.32
VGMA 2. 15.07
VGMA 3. 14.93
VGMA 4. 12.54
VGMA 5. 11.75
VGMA 6. 10.82
VGMA 7. 10.17
VGMA 8. 9.86
VGMA 9. 8.23
VGMA 10. 8.05
VGMA 11. 7.84
VGMA 12. 7.04
VGMA 13. 6.84
VGMA 14. 6.66
VGMA 15. 5.08
VGMA 16. 4.87
VGMA 17. 4.42
VGMA 18. 3.66
VGMA 19. 3.01
VGMA 20. 0.65
VGMA 21. 0.51
VGMA 22. 0.31

These voltages are gradually dropping which makes me believe that the T-CON board is ok.

Anybody got any ideas? I was thinks of replacing AS15-F but my voltage results are putting me off.

Thanks in advance

Paul

[ReeceyBurger123]

Re: Sony KDL-40V3000 picture getting brighter!

Thats an As15 fault, replace that chip and all should be good They sometimes fail intermittently.

[Lampmanpaul]

Re: Sony KDL-40V3000 picture getting brighter!

Ok Will do..


Thank you for replying ReeceyBurger123



Paul

[ReeceyBurger123]

Re: Sony KDL-40V3000 picture getting brighter!

No worries let us know how it goes