UnBricking TV by EEPROM Reset - Revision history

Juuso at 19:30, 16 June 2017

2017-06-16T19:30:14Z

Juuso: /* UExxFxxxx */

2017-01-21T17:45:27Z

‎UExxFxxxx

Juuso: /* UExxFxxxx */

2017-01-20T12:30:14Z

‎UExxFxxxx

Juuso: /* UExxFxxxx */

2017-01-20T12:27:57Z

‎UExxFxxxx

Juuso: /* F series SoC EEPROM location */

2017-01-20T12:27:37Z

‎F series SoC EEPROM location

Juuso: /* UExxF6xxx */

2017-01-20T11:57:50Z

‎UExxF6xxx

Juuso: /* F series SoC EEPROM location */

2017-01-20T11:53:06Z

‎F series SoC EEPROM location

Hedak: Added EEPROM specification 'SoC'

2014-03-09T13:22:40Z

Added EEPROM specification 'SoC'

Juzis28: /* UExxC7700 */

2014-01-11T16:04:51Z

‎UExxC7700

Juzis28: /* UExxC7700 */

2014-01-10T16:09:14Z

‎UExxC7700

@@ Line 112: / Line 112: @@
 Do check forums for latest info.
-===UNxxES7500===
+===UNxxES7500, UE55ES8090===
 <gallery>
 Image:UNxxES7500_Eeprom_location.jpg|UNxxES7500 Board

@@ Line 132: / Line 132: @@
 *UExxF66xx<br>
 *UExxF68xx<br>
-Main eeprom: IC901 (ATMLH348 or AT24C256)
+Main eeprom: IC901 (ATMLH348 or AT24C256). Unbricking possible two ways: Short circuit on RED or BLUE.
 <gallery>
 Image:UExxFxxx.jpg|BN41-01958A/B

@@ Line 121: / Line 121: @@
 ===UExxFxxxx===
-Applicable for TV models with mainboard: '''BN41-01958A/BN41-01958B'''<>br
+Applicable for TV models with mainboard: '''BN41-01958A/BN41-01958B''':
-UExxF45xx<br>
+<br>
-UExxF53xx<br>
+*UExxF45xx<br>
-UExxF55xx<br>
+*UExxF53xx<br>
-UExxF62xx<br>
+*UExxF55xx<br>
-UExxF63xx<br>
+*UExxF62xx<br>
-UExxF64xx<br>
+*UExxF63xx<br>
-UExxF65xx<br>
+*UExxF64xx<br>
-UExxF66xx<br>
+*UExxF65xx<br>
-UExxF68xx<br>
+*UExxF66xx<br>
 Main eeprom: IC901 (ATMLH348 or AT24C256)
 <gallery>
-Image:UExxFxxx.jpg|UExxFxxxx
+Image:UExxFxxx.jpg|BN41-01958A/B
 </gallery>

@@ Line 121: / Line 121: @@
 ===UExxFxxxx===
-Applicable for TV models with mainboard: '''BN41-01958A/BN41-01958B'''
+Applicable for TV models with mainboard: '''BN41-01958A/BN41-01958B'''<>br
 UExxF45xx<br>
 UExxF53xx<br>

@@ Line 120: / Line 120: @@
 ==F series SoC EEPROM location==
-===UExxF6xxx===
+===UExxFxxxx===
-Mainboard: BN41-01958A/BN41-01958B
+Applicable for TV models with mainboard: '''BN41-01958A/BN41-01958B'''
 <gallery>
 Image:UExxFxxx.jpg|UExxFxxxx

@@ Line 1: / Line 1: @@
-Here we will show you how to reset your TV by resetting the EEPROM. This can be very useful in case you have bricked your TV by messing with some of its internal settings, which can easily happen if you mess around in the Service Menu. It is highly recommended to take photos of each screen in the service menu, showing your original firmware settings, before changing anything!
+Here we will show you how to reset your TV by resetting the SoC EEPROM. This can be very useful in case you have bricked your TV by messing with some of its internal settings, which can easily happen if you mess around in the Service Menu. It is highly recommended to take photos of each screen in the service menu, showing your original firmware settings, before changing anything!
 =Blind Factory Reset=
-Before trying to EEPROM reset, please try a this factory reset, that might revive your TV also.
+Before trying to EEPROM reset, please try a factory reset, that might revive your TV also.
 Press "EXIT" button for 12 seconds (15 is better since you cannot see TV), than press "Left" and "Enter"
@@ Line 21: / Line 21: @@
 =EEPROM=
-EEPROM is a short of ''electrically erasable programmable read only memory'', which is actually a chip. In Samsung TVs, all service menu settings kept there. You can delete and reprogram this chips millions time. So they are fast and reliable...
+EEPROM is a short of ''electrically erasable programmable read only memory'', which is actually a chip. There are several EEPROM chips used in Samsung TVs. All service menu settings are kept in the so called SoC EEPROM. You can delete and reprogram this chips millions time. So they are fast and reliable...
 =Reseting NVRAM (EEPROM)=
-For resetting TV, settings, you needed to remove EEPROM device from TV. But it's not required. In electronic world, if you disable communication of the chip, it counts as removed. So we just needed to kill communication of EEPROM. EEPROM on Samsung TV's communicating via common i2c protocol. That protocol carries data via SDA line and send clocks via SCL line. In our situation, both blocking SCL or SDA will works. But I decide SDA.
+For resetting TV, settings, you needed to remove SoC EEPROM device from TV. But it's not required. In electronic world, if you disable communication of the chip, it counts as removed. So we just needed to kill communication of SoC EEPROM. EEPROMs on Samsung TV's communicating via common i2c protocol. That protocol carries data via SDA line and send clocks via SCL line. In our situation, both blocking SCL or SDA will works. But I decide SDA.
 To do this, all you have to do that feeding (connecting) GND (ground) or VCC (3.3v) to SDA line with little wire... That's all. Since this lines are HIGH (v3.3) in IDLE, its better to hold it via VCC. You can also hold this lines via GND too. But don't try to connect both GND and VCC. It will be short circuit and probably will damage your board.
@@ Line 34: / Line 34: @@
 [[File:UE40D5000 RESET MESSAGE.JPG|center|300px| UE40D5000 Reset message]]
-=Where do I find the EEPROM chip?=
+=Where do I find the SoC EEPROM chip?=
-:Its located near CPU at C and D series. On top, it writes some numbers and letters starting with 24256 or 24512... Here I place some screen shots from D series bellow. In my TV, 24512 EEPROM chip used. You can get the [http://pdf1.alldatasheet.com/datasheet-pdf/view/22813/STMICROELECTRONICS/M24512-RBN6.html 24512 Chip Datasheet here]. In picture, white triangle shows the first pin.
+:Its located near CPU (SoC) at C and D series. On top, it writes some numbers and letters starting with 24256 or 24512... Here I place some screen shots from D series bellow. In my TV, 24512 EEPROM chip used. You can get the [http://pdf1.alldatasheet.com/datasheet-pdf/view/22813/STMICROELECTRONICS/M24512-RBN6.html 24512 Chip Datasheet here]. In picture, white triangle shows the first pin.
-==B Series EEPROM Location==
+==B Series SoC EEPROM Location==
 ===LExxB550===
 You have to search for eeprom on '''back side''' of mainboard. IC3001<br><br>
@@ Line 46: / Line 46: @@
 [[Image:Samsung_UE32_B6000_eeprom_reset.jpg|270px|eeprom location, reset procedure]]
-==C Series EEPROM Location==
+==C Series SoC EEPROM Location==
 ===LExxC550/530===
 [[Image:C550_full.jpg|270px|C550/530 Board]]
@@ Line 70: / Line 70: @@
 <br>
-==D Series EEPROM Location==
+==D Series SoC EEPROM Location==
 ===D5000===
 <gallery>
@@ Line 95: / Line 95: @@
 </gallery>
-==BD (BlueRay DVD Player) EEPROM Location==
+==BD (BlueRay DVD Player) SoC EEPROM Location==
 ===BD-D8X00===
 <gallery>
@@ Line 108: / Line 108: @@
 </gallery>
-==ES-series EEPROM Location==
+==ES-series SoC EEPROM Location==
 This may also be compatible with the "E"-series...
 Do check forums for latest info.
@@ Line 118: / Line 118: @@
 </gallery>
-==F series EEPROM location==
+==F series SoC EEPROM location==
 ===UExxF8000===

@@ Line 61: / Line 61: @@
 [[Image:UA40C6200_1.jpg|285px|UA40C6200 reset]]
 ===UExxC7700===
-[[Image:DSC 0272 marked.jpg|300px|UE46C7700 Board(back side of mainboard)]]
+<gallery>
-[[Image:DSC 0285 resized.jpg|300px|UE46C7700 eeprom (back side of mainboard)]]
+Image:DSC 0272 resized marked.jpg|UE46C7700 Board (back side of mainboard)
 ===OTHER===