SamyGO

hello~

my TV model ES8000 and ES6400.
both tried to connect TDM Menu.
but ES8000, ES6400 is not connection

next content is my work process list

1. rs232 mode change to debug 2. setting to putty
Baudrate: 115200
Data bits: 8
Parity: none
Stop bits: 1
Flow Control: none

3. input unlock code and TDM code
ES8000
input : 20102011[enter]
input : 20089999[enter]

ES6400
input : 1198282[enter]
input : 20089999[enter]


success??
no! putty terminal screen is still black... and not view TDM menu

what is wrong???

bad cable/ wrong contacts on vga / soldering mistakes.

first check cable ( do loopback test), then once again - pinout...

i'm using "TTL-232R-3V3-AJ" cable.

so i don't think bad cable./ contacts 3.5 audio jack(ex-link)/ not soldering mistakes.

how should i do?????

Maybe your tx and rx are swaped? Can be 3.5 jack pinout not match your service port pinout. Check wiki. Also do loopback test (make short circuit rx-tx and check terminal, if cable is ok, you should see what you`re typing).

Or maybe there is yet another problem: serial connectors in some ES8000 models (eg. PSxxES8000) are using normal (+/-12V) RS232 signaling..

So, in E-series models (just a guess, I'm not responsible for any possible damages):
1) if the 3.5mm mini-jack connector is labeled "ExLink" or "Ex-Link", it may need regular +/-12V RS232 Ex-Link cable (like documented in wiki for B-series);
2) if it's labeled "Service", I think it will most likely need 3.3V RS232 cable.

It's a good precaution to check what signal level you have before plugging your cable :
To check wheather it's 12v-RS232 or not, just look at the Exlinx-TX voltage : -12v for RS232, 3.3v otherwise