Sharp LC40LE531E Red/Green flashing LED

[nomoresonys]

Re: Sharp LC40LE531E Red/Green flashing LED

I agree with Mr. Barton, very well done Diah, you are...The Wizard.

[budm]

Re: Sharp LC40LE531E Red/Green flashing LED

Good fix indeed.
Now you should take the Voltage readings as reference for future repair.

[Diah]

Re: Sharp LC40LE531E Red/Green flashing LED

Last question:
How does the BIOS/SW become corrupted in the first place?

the Main boards design are early one from vestel where they missed up with so many parts where now at the new design are to much less parts. beside the quality of some brand parts of NAND RAM EEPROM developed in good way... SOME BRAND NOT ALL... as we experience many become more bad than before.

[Nevillet]

Re: Sharp LC40LE531E Red/Green flashing LED

Last question:
How does the BIOS/SW become corrupted in the first place?

[dick_barton]

Re: Sharp LC40LE531E Red/Green flashing LED

Nice fix Diah

[Nevillet]

Re: Sharp LC40LE531E Red/Green flashing LED

THANK YOU SO MUCH!!
Persistence works!!!

PM sent.

[Diah]

Re: Sharp LC40LE531E Red/Green flashing LED

OK.
500Mb USB stick
FAT32
All files copied across
......................................................
F**K!!!!
It's worked!!!!!!!!!!!!!!!!!

LOL dont JUMPING high.. be ware of your head....

[Nevillet]

Re: Sharp LC40LE531E Red/Green flashing LED

OK.
500Mb USB stick
FAT32
All files copied across
......................................................
F**K!!!!
It's worked!!!!!!!!!!!!!!!!!

[Diah]

Re: Sharp LC40LE531E Red/Green flashing LED

its better to flash the bootloader first then the main firmware

extract the zip and put all file you have on USB stick formatted FAT ot FAT32 the usb stick will be better with max 1GB . insert the stick in tv press P+ or ok on RC and turn on the set.. you can see the USB stick led indicator will blinking... give time for it... after it finish flashing and every things went ok.. the TV will restart and initial it self

[Nevillet]

Re: Sharp LC40LE531E Red/Green flashing LED

OK, I have the FW.zip file.
Which file do I need to flash and how do I do it?
Is there a YouTube video you can recommend?

[Diah]

Re: Sharp LC40LE531E Red/Green flashing LED

...this TV has driven me crazy!!!
Anyhow after my (bad) light bulb trick it it now as it was before.
So solid red with power, then red/green flash on front panel button press...

Re re-flashing firmware how about this?

download this firmware its for samsung panel

[Nevillet]

Re: Sharp LC40LE531E Red/Green flashing LED

...this TV has driven me crazy!!!
Anyhow after my (bad) light bulb trick it it now as it was before.
So solid red with power, then red/green flash on front panel button press...

Re re-flashing firmware how about this?

http://gofirmware.com/content/17mb70-5p-firmware

[Diah]

Re: Sharp LC40LE531E Red/Green flashing LED

what are you doing LOL ... bad idea.. because if there SMT parts at bottom side of the boards all will fill down... !!!!!!

[Nevillet]

Re: Sharp LC40LE531E Red/Green flashing LED

[Diah]

Re: Sharp LC40LE531E Red/Green flashing LED

I removed the main digital board and heated the large BGA chips for a few minutes - then let them cool and reassembled.

I now only have the red standby and it will not turn on as it did before...

Have I fully broken it now?

no you didnt... the BGA still there.. do it again and search for firmware for yours mainboards 17MB70-5P with samsung panel driver..

by the way yesterday i did extract the bootloader i posted before its dosnt contained any driver... the driver of panel and audio and video are located at main firmware which you need to search for... so its safe if you flash the bootloader i attached before.

[Nevillet]

Re: Sharp LC40LE531E Red/Green flashing LED

I removed the main digital board and heated the large BGA chips for a few minutes - then let them cool and reassembled.

I now only have the red standby and it will not turn on as it did before...

Have I fully broken it now?

[budm]

Re: Sharp LC40LE531E Red/Green flashing LED

So at this point the ENA (BL-ON) is still staying at <1V, correct?

[Diah]

Re: Sharp LC40LE531E Red/Green flashing LED

for record.. there are procedure using UART to know where are the BGA exactly as this set Linux and we can communicated with it via UART. USB TTL 5.V and the UART pins are at the scart sockets
Scart Pin 10 - RX
Scart Pin 12 - TX
Scart Pin 14 - GND

terminal setting
Baud-Rate:115200
Bits: 8
Stop-Bits : 1
Parity : None
Handshake: No

[Diah]

Re: Sharp LC40LE531E Red/Green flashing LED

okay thanks... forget my bootloader file... yours set bootloader 100% okay...
you have BGA issue

take the mainboards out side and heat it very well with hot air gun specially under side where the black heatsink covered cpu and other 2 chips. leave it cool down and then put it in place

EDIT:

it could be main firmware too... i have many with LG panel driver ( medion sets) either modified firmware too and autorun.sh

at end here are documentation service manual and schematic to this boards.

[Nevillet]

Re: Sharp LC40LE531E Red/Green flashing LED

This the right ID label?