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I need your immediate help : LE40B750

by Abdollah0098 / April 4, 2010 2:41 PM PDT

Friends need your immediate help.
I have an LCD model LE40B750.
A few days ago a new Firmare T-CHL7DEUC 3000.2 download from Samsung's site and I got upgraded as well. But I realized that after the upgrade option is disabled Alternative Software.
After a few days out of curiosity I enter the service menu and change the tuner section, and after I press standby button remote control, LCD off and the other does not work.
Each time the power plug connected sensors constantly blink red lamp and screen goes white and bright but will not start and stop after a few seconds and again repeats the same state.
I opened the back door and used the reset button to reset factory, but it was not effective.

some serviceman told me to solve , first I have to find a similar LCD mainboard to IC flash like jtak. is it true?
Please Help me how can I Boot my LCD TV ?

Thank you for your attention dear friends

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I had same problem on LA40B650
by LA40B650_da / April 4, 2010 5:53 PM PDT

Sorry to hear that. Some days back even i had same problem of firmware getting corrupt. TV switches on shows some white/blue screen for some time and reboots and it repeats. I called up customer care so that they can replace the firmware chip but instead they told me that THEY CAN NOT CHANGE the chip and also they told now a days they are not getting this main board for replacement. So they have finally agreed to replace my TV with new TV. So check with dealer if he can replace your set..(my set was just 2 weeks old)

All the best!!!

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hi i have exactly same problem on b651
by SSBROLY / November 24, 2012 7:12 AM PST

i have done same thing in service menu and tuner option and now tv wont reboot,my tv is not on warranty, what do i do???

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Check if you can get a board.
by R. Proffitt Forum moderator / November 24, 2012 7:16 AM PST

Try, and of course, ebay.

If you can't get it serviced (Samsung usually can service all their models) then consider selling it for parts on ebay since I see units with cracked screens.

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