Sharp Aquos LC46XL2E LCD (2 flashing lights)

[Liam.25]

anybody worked with this tv before?

as soon as i plug it in, i get 2 flashing lights on front, tv doesnt power on.

red standby light - flashes twice
green opc light - flashes 4 times

is they any fault codes i can read up on?

[PlainBill]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

anybody worked with this tv before?

as soon as i plug it in, i get 2 flashing lights on front, tv doesnt power on.

red standby light - flashes twice
green opc light - flashes 4 times

is they any fault codes i can read up on?

Service manual.

PlainBill

[Liam.25]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

does it exist? i cant find it.

[Dgtech]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

does it exist? i cant find it.

Click on the link where Plain Bill posted "Service manual". Just click on those words. This is why "Service manual" is underlined in his post.

[Liam.25]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

oh no. im on my android phone here. didnt realise it was a link. thanks. will check it out now.

[Liam.25]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

no fault codes in the service manual, just schematic diagrams.

[ecking767]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

I had a Sharp LCD TV and I clear the code by holding down the following:

power button, channel down and input. hold down until LED stop flashing

ALL THREE button from the control panel on the TV, not from the remote

this was a Sharp 32" LCD TV, Its a long shot if this work.

ecking767

[Liam.25]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

hi ecking767, i just tried that - no luck.

all voltages seem to be ok, im guessing it could be main board fault.

[rayrod81]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

Are you sure it is four OPC blinks. I have never seen that error in any Sharp manual I have seen. I have worked on a few with 2 power blinks and 5 OPC blinks which would indicated a problem with the T-Con or a bad panel.

[Liam.25]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

yes 2 power and 4 opc.

i changed psu board - same fault

i changed main board - tv now comes on, all lights are ok - sound no picture but there is a backlight.

ahhhhh im pulling my hair out.

[Liam.25]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

rayrod81, i did unplug t-con and you are correct opc light flashed 5 times.

but opc flashing 4 times is definately bad main board.

[Canuck_33]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

I am having a problem similar but not the same and it is my hope someone here can help. I have a 50" Sharp Aquos and I am absolutely sure that only one green light is on the front of the tv when it is on normally...but today there are two lights and I swear the picture seems darker?? Anyone have any thoughts?

[Schorsch87]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

I have the same problem with mit LC46X20E. Power led flashes 2x and OPC led 4x. So there is Digital 3.3V missing. Where is it generated? Are there common faults on other sharp LCDs? Is it repairable? I don't want to buy an entire board and just swap it. I want to find the fault.

Regards

[tom66]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

Digital 3.3V is generated on the main board usually.
There is a common fault with those main boards caused by a small ceramic capacitor on the SS pin of the buck-converter IC failing. If you post a picture of the main board, I can highlight where to test for this issue.

[tom66]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

I am having a problem similar but not the same and it is my hope someone here can help. I have a 50" Sharp Aquos and I am absolutely sure that only one green light is on the front of the tv when it is on normally...but today there are two lights and I swear the picture seems darker?? Anyone have any thoughts?

OPC is on. Turn OPC off from the menu. It dynamically compensates the backlight for environmental brightness. I personally like the feature, makes it comfortable to use in both bright and dark rooms.

[Schorsch87]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

Here are he pictures. I hope the quality is good enough. How do I have to test the cap? I just own a DMM.

Regards

[tom66]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

There is a capacitor C4707. It will be a little silver cap, near IC4701, an 8 pin chip. Can you see this?
This board is different to mine, so I can't highlight where it is unfortunately.

[Schorsch87]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

There is no cap with this Number and also no IC4701.

[tom66]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

It could be on the bottom of the board.

[Schorsch87]

Re: Sharp Aquos LC46XL2E LCD (2 flashing lights)

Okay, now I'm at my parent's and I can't check till sunday. Will give a reply then.