LCD LED TV EPROM REPLACEMENT IDEAS

EEPROM.
28 can replace 24C64 and 24C32.  Please make sure that it is
using the same IC packages. Because some different packages, their Vcc input
voltages will different. For more details, please refer to their own datasheet and
it is save before replace it.
* EEPROM= Electrically Erasable and Programmable Read-Only Memory
24C01= 1K bits (128 x 8= 1024 bits)
24C02= 2K bits (256 x 8= 2048 bits)
24C04= 4K bits (512 x 8= 4096 bits)
24C08= 8K bits (1024 x 8= 8192 bits)
24C16= 16K bits (2048 x 8= 16384 bits)
And so on….....
16 bit can be replaced with 32 bit
you should not replace with 64 or 128 bit  For example, in the Samsung 943 series LCD monitor
main board, commonly using this EEPROM IC S24CS08A (Seiko Instrument)
and causing lots of the problem. So you can use the AT24C08A (Atmel) as an
equivalent. And it can work very well.
The 24Cxx series EEPROM IC pin7 (WP- Write Protect) have two kinds of
method to connect it. The EEPROM IC manufacturer like AT (Atmel), ST
(STMicroelectronic) and BR (ROHM), their EEPROM IC pin7 need to connect
to the ground to allow data write into the EEPROM memory. 27U1G8 in AOC 32" LED TV when try to copy one error coming "162 area blocked" what is this error  PCF Series EEPROM IC
For Philips EEPROM IC, most of their PCF series IC are compatible with
24Cxx series. For example, they can replace with:
24C01 ? PCF8522
24C02 ? PCF8582
24C04 ? PCF8592
The PCF8522 and PCF8581/PCF8582 their connection for pin7 (WP) are
different. PCF8522 pin7 need to connect to ground. The PCF8581 and PCF8582
their pin7 need to connect it as “Active High”. The substitute for this PCF series
IC also same, choose the bigger size to replace a bit small size memory. For
example, PCF8582 can replace PCF8581; PCF8598 can replace PCF8594
EEPROM IC.
Be careful of different EEPROM IC packages will have different Vcc input
voltage range. For example Vcc input voltage range for Atmel series EEPROM
IC: 4.5~5.5V, 2.5V~5.5V, 1.8V~5.5V and 1.7V~5.5V. 1, 6, 2 would  be pin showing  not connected    If the EEPROM IC damage, the best choice is use an original part number. If
can’t get it, highly recommend to use same specification part number but
different brands IC. For example, the original part number is ST24C16, so you
can use AT24C16 EEPROM IC to replace it.

Example of that induct coil in power supply so that flash failure can be avoided. When find the equivalent EEPROM IC, need to find a memory size bigger
than the original one. For example, 24C02 can be replaced by 24C04 or 24C08.
Please make sure not to use too bigger memory size EEPROM IC, sometime it
could be malfunction or other strange problem will occur. Some model TV can’t use the bigger memory size or different brands of
EEPROM IC to replace their original EEPROM IC. Because of this TV Main
board CPU will detect the memory IC their ID number. If the number is
different, the CPU will not accept it and the Main board will not operate or
strange problem will occur.  Some 24W series EEPROM IC their pin7 (WP) connect to MCU, so this type
of EEPROM IC is highly recommend to use their original part number memory
IC.
Flash  problem  may be due to so many  reason  1 virus  from pendrive  2 lightning strike 3   3.3v  regulators problem  etc Lastly, if using different packaging EEPROM IC, make sure that their Vcc
pin input voltage suitable the original memory IC or cover in the voltage range.
[11/13/2016, 12:46 AM] Nayan Kathrecha: lcd led tv fault finding methods
Common faults in lcd led tv ‘s are

power supply
mother board
t-con board
back light
inverter board (some time combine with motherboard or power supply board)
lcd display matrix  problem .

power supply
This is the most important part in lcd led tv that most often gets fault  . it contains

A.C line filter
bridge rectifier
mosfet for switching
PWM chip for switching mosfet
opto coupler for feedback supply regulator by ka431
ripple filter
mother board
this second important component that often gets complained

voltage regulators used for proper voltages like 3.3v ,2.5v,1.8v