Re: Need help with Sharp LC-80LE8032 Power Drive with 2 Long and 3 short flash



ok, I assume you were able to enter service menu after you have 1 slow 1 fast flash ? can you reset the error after power cycle ? I meant do you still have 1 slow 1 fast Flashing after power cycle?...

Re: Need help with Sharp LC-80LE8032 Power Drive with 2 Long and 3 short flash

I ordered PS from ebay and just arrived today and install on the TV it is just simple working!! with old mainboard
it seems the 2 Long and 3 short flash error came from Power supply, I read one thread have same error he just changed the Mainboard to make TV working.

Now I have a non working PS It need to be fixed for spare and a working Main board but with 1 long and 1 short flashes, bypass the error with Ch Dn and Vol up the TV working , I could't enter to service menu to reset...

Re: Need help with Sharp LC-80LE8032 Power Drive with 2 Long and 3 short flash



Take STB with 5V via 1K resistor same result.
PS_On with external regulator(5V->3.3V) from Bus5V
PNL_PWR aslso with external regulator(5V->3.3V) from Bus5V

0 Volltage on either 12V or 13V pin...

Re: Need help with Sharp LC-80LE8032 Power Drive with 2 Long and 3 short flash



Thanks for respond while I am looking for -1K resistor may I have question, is STBY pin voltage genetaed by Power Supply or from mainboard?...

Re: Need help with Sharp LC-80LE8032 Power Drive with 2 Long and 3 short flash

I did try one riibon cable at a time and both but same problem with Tcon power only or without tcon same error.
I have read a thread the T con was the problem. In my case with bench test I force the PS on with external regulator. But the 12V and 13v won't show up.

Re: Need help with Sharp LC-80LE8032 Power Drive with 2 Long and 3 short flash



BTW I have read your thread as I included your thread in my first post , that was excellent work what you did , I hope the LED is not the source of problem for my TV...

Re: Need help with Sharp LC-80LE8032 Power Drive with 2 Long and 3 short flash

Thank you all for respond, I did reset with Vol Up and Chnl Dn combination nothing change.
all pin on CN7501 is 0V except the Bus5v is 5V.

I took off the Power Supply for bench test, I have external regulator 5V to 3.3 V (from my old arduino project) and get the power 5V from Bus5V pin as input and connect the output to Pin PS_ON now I probe the CN 7501 pin with the result below
1:PNL_12V ==>0V
2: PNL_12V==>0V
3 : GND
4 : GND
5 : UR13V==>0V...

Hi I am new here, I would like to get help, how to fix this Power Drive for Sharp TV LC-80LE632U
The PS board is RUNTKA903WJQZ The error is 2 long flash and 3 short flash .
The TV was fine last week until a I installed chromecast 1st genreration and still working for 1 day, I change the power source for Chromecast from external ac adapter to TV USB as I don't want the chromecast keep running as the TV off, I rarely use this TV since I purchased 5yrs ago. The day after I move the power source of Chromecast I turned on the TV, I found the error.
I have tried all reset combination...

Re: New Members - please post your introductions here

I am new here, want to learn more