KDL40S4100 Screen dim, slow to refresh

[ljintexas]

I have repaired or replaced every board in this set..it was in a barn for a couple years...Screen is dimmer than usual and the left side is very slow to refresh. If I leave it on for over 30 min, I lose video..audio is fine..If I let it set for a couple hours..comes right back on. Is this related to the dreaded AS15 chip on the T-con or do you guys think the panel is toast?

[sordids999]

Re: KDL40S4100 Screen dim, slow to refresh

Could be also a tab bond fault

[splitcrete]

Re: KDL40S4100 Screen dim, slow to refresh

If you changed the main board it will need a firmware update.

[ljintexas]

Re: KDL40S4100 Screen dim, slow to refresh

Indeed I did..But with a known good used one form a set with a cracked panel. i will search for an update. Thx!

[Hobby 1]

Re: KDL40S4100 Screen dim, slow to refresh

Its a tab bond issue. The screen is probably Samsung. Common symptom is darker screen and slow motion in 1/3 to 1/2 of the screen.

[ljintexas]

Re: KDL40S4100 Screen dim, slow to refresh

Took it down to the tubes..cleaned every ribbon and connection I could find..all tubes fire..did not get any reaction when applying pressure to tabs/panel at bond. Still slow to refresh on left side and overall not bright as it should be.
Aaarrgghh. If it's the panel, then I have a set full of components for sale.