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Samsung UA46F7500 restarts after change region

Posted: Mon Jan 13, 2014 11:01 am
by Intruder112
Hi. My TV is Samsung UA46F7500. I entered Service menu and changed region and tuner model. After that Tv is restarting. Appears SMART TV logo, after 3 icons, then black screen and after 10 seconds TV rebooting. I've tried 12-15 sec pressing EXIT agter Left arrow and Enter but nothing. Then i tried reset EEPROM chip S24C51 by shorting pins SDA+SCL, SDA+VCC, SCL+VCC, GND+SDA, GND+SCL. When i short them SMART TV logo appears upside down, icons changes from 3 to 5, black screen and restarts. So i can't reset EEPROM. When i realese pins TV ceep restarting with normal logo and 3 icons again. How can i fix this issue.

Thank you veru much

Re: Samsung UA46F7500 restarts after change region

Posted: Mon Jan 13, 2014 12:52 pm
by juusso
pin 4+5 OR 5+6 , but be sure you do everything according instruction on wiki.

now i see you do everything wrong. are you trying to burn your mainboard?

1. unplug TV from electricity
2. make short connection and don`t release
3. power to the wall and wait until LCD is on
4. release short circuit
5. power OFF using RC to stand by
6. info-menu-mute-power (or mute 1 8 2 power) and set proper values.

Re: Samsung UA46F7500 restarts after change region

Posted: Tue Jan 14, 2014 7:52 am
by Intruder112
Thank you for reply. I'll try.

Re: Samsung UA46F7500 restarts after change region

Posted: Wed Jan 15, 2014 10:42 am
by Intruder112
juuso wrote:pin 4+5 OR 5+6 , but be sure you do everything according instruction on wiki.

now i see you do everything wrong. are you trying to burn your mainboard?

1. unplug TV from electricity
2. make short connection and don`t release
3. power to the wall and wait until LCD is on
4. release short circuit
5. power OFF using RC to stand by
6. info-menu-mute- (or mute 1 8 2 power) and set proper values.
Hi. You're quite right. My wrong is i did not released short circuit in time. I did everything as you advised and TV revived. Just i did not turned off TV because it entered service mode by itself after that i released short circuit.

Thank you very much Sir.

Re: [solved]Samsung UA46F7500 restarts after change region

Posted: Sat Mar 22, 2014 12:50 pm
by Herold
Hi,
I'm new in this forum. have the same issue. my question is, what do you mean with short connection. how i do it?
Thank you.

Re: [solved]Samsung UA46F7500 restarts after change region

Posted: Mon Apr 14, 2014 10:24 pm
by sdsp
Thank you for your great forum!
Unfortunately i don't understand too, i have the same problem, please explain more, i just changed my local-set and that's happened to me!
Thank you in advance for any help.

Re: [solved]Samsung UA46F7500 restarts after change region

Posted: Wed Jan 24, 2018 1:19 pm
by Tshumfu
Hi I have F7500 I am having the same problem however when holding the wire I hear a clicking sounds after 30sec, 45sec, 60sec, I release the wire then it reboots and continues to do the same thing.

I assumed I am holding wires on the wrong pins when I place on the other side of the eprom the logo is upside down and when it restarts it just does the same thing.

I am unable to go standby mode and I assume that is the reason I cant go to the service menu.

Please help!!! WHAT AM I DOING WRONG?

Re: [solved]Samsung UA46F7500 restarts after change region

Posted: Sun Jan 28, 2018 5:14 pm
by juusso
Use IR method and send INFO+FACTORY while TV is on and you get directly to service menu. You can try any of available methods ( http://wiki.samygo.tv/index.php?title=H ... SPEED_keys ). Most simple is mobile phone with IR port + SRC app.

Re: Samsung UA46F7500 restarts after change region

Posted: Mon Feb 05, 2018 7:40 am
by Tshumfu
Hi I tried using the IR but my time is insufficient before the bootloop. It freezes and reboots or sometimes the screen turns blank then it clicks and reboots. Please help.