Sharp Aquos LC-60LE652E - Blank screen, no sound, steady blue LED

[Martin_Silberkuhl]

Re: Sharp Aquos LC-60LE652E - Blank screen, no sound, steady blue LED

No, what I mean is, what is the next step?

Without a circuit diagram it's not really easy. Normally I would check the voltages on all ICs, but I don't know which voltages.

What would you do?

[dick_barton]

Re: Sharp Aquos LC-60LE652E - Blank screen, no sound, steady blue LED

I would say at this point without a schematic I would be looking for a replacement main board or for one being sold with a cracked screen.

[budm]

Re: Sharp Aquos LC-60LE652E - Blank screen, no sound, steady blue LED

May be you can use ADIM (Analog Dim) control pin and set and forget type so the LED current is set to as low as possible, it will be cheaper than new main board and use it until the main board fails completely.
BTW, the spec sheet of the IC does not explain how to choose between the PWM and ADIM function. The app notes schematic shows ADIM pin is terminated with a cap to GND for using PWM DIM. You may have to do experiment to see how to use ADMIN (3V is the max level)

[Martin_Silberkuhl]

Re: Sharp Aquos LC-60LE652E - Blank screen, no sound, steady blue LED

Hey guys,

thank's for helping me. I try to get a main board. If I have tested, I'll come back with the results.

[tijntijn]

Re: Sharp Aquos LC-60LE652E - Blank screen, no sound, steady blue LED

hallo everybuddy,

i have the same tv lc60le652e no sound no picture it does power on my qwestion is have you fixed the problem by replacing the mainboard ?

thanks have a nice day

tijn

[khizarnld]

Re: Sharp Aquos LC-60LE652E - Blank screen, no sound, steady blue LED

Hey guys,

thank's for helping me. I try to get a main board. If I have tested, I'll come back with the results.

Good Day.

I have the exact same model sharp with with the same problem, what have you done with your tv, did you succeeded repairing it, i would appreciate if you let me know what happened to your tv. Maybe you have some info helping me getting my tv back, eager to hear from you,

Thanks

[vdoru77]

Re: Sharp Aquos LC-60LE652E - Blank screen, no sound, steady blue LED

Hey guys,

thank's for helping me. I try to get a main board. If I have tested, I'll come back with the results.

Hi there,

I don't know if it helps but I had the same problem and I solved it by replacing the mainboard.