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Sharp TV - Flashing OPC & Power Light

post #1 of 15
1/27/09 at 8:54pm
Thread Starter 
I just received a Sharp Aquos LC37D64U from Dell.com this past Friday.
I watched the unit all week while it was hooked up to my Digital TV box via component cables, everything worked and looked fine, other than the OPC sensor going up and down.

I than decided to hook up my HP Elite Desktop to it, and the unit will not stay on any more. I will press power, the tv will turn on, than I could select my input, than all of a sudden, the screen goes blank and the OPC & Power Light keep flashing. I can't see a thing anymore ?Not even when I hook the TV up to the cable box again!

What gives? This is a brand new unit, was working fine, than this. I read a few threads where people say its a power supply issue. Is this true? Would I now have to go return this to Dell to have them fix it? Or is this not the case, and it is a fix I can do?

I really want this TV to work, it looked great all weekend, now I want to see a picture again!

Please help
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post #2 of 15
1/27/09 at 9:18pm
I think it is a power supply issue, i went through the same thing with 46se94u, actuallly twice, then i gave up on sharp and went with sony.
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post #3 of 15
1/27/09 at 10:11pm
Thread Starter 
I love Sony and all as well but Sharp seems like decent brand and people like this TV. If it is definitely a power supply issue, how can I be sure?

I just tried the TV again, it worked, but after reading what the flashing lights meant, I don't want to deal with this again.

It really does look fantastic.


Anyone know the price of fixing the power supply issue?
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post #4 of 15
1/28/09 at 11:33am
Thread Starter 
Bump
Anyone got a suggestion?

Considering this thing is 4 days old, I only have 21 days to return it (don't want to do this hassle).

Is this a common issue, and what the fix?
It has began working fine again, but I just don't want to see those things flash again since it does look like a power supply issue.

Any suggestions??
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post #5 of 15
7/2/09 at 10:22am
I have a Sharp LC-46SE94U

I experienced this exact problem when I tried to do a firmware update yesterday to Version S0809031. Here's what happened

1) I downloaded the file, unzipped, and put it on a USB thumb drive and connected the USB drive to the TV.
2) I ran the software updater in the TV menu
3) The TV went blank is it said but the TV broadcast picture returned immediately and no update appeared to have happened.

After that happened the TV would only flash as described in the previous posts when it was turned on. However if I plugged the USB thumb drive back in the TV would turn on normally. Each time I'd try the update and each time it would fail.

Here's how I solved it:

a) The firmware update instructions say the thumb drive needs to be formated in FAT filesystem. My drive was FAT32.
b) I reformatted and tried the upgrade again and this time the upgrade completed normally.

Now the TV turns on and off normally.
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post #6 of 15
12/9/09 at 1:21am
I had to register and post that you are a god among the TV world. You just saved my TV from being tossed out the window and me from a massive headache.. Thank you so much sir!
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post #7 of 15
2/16/10 at 2:16pm
Kirkmacdonald
I also registered to tell you how much I appreciate your solution. I had exactly the same problem and your fix was the solution. If you ever come to central North Carolina, PM me and I will feed you like a king. The weanies at Sharp are just plain clueless.

I cannot say thank you enough!!!!!
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post #8 of 15
3/15/10 at 10:13pm
I just had a problem with lights. The power light would blink once w opc then opc stopped and power would blink 2 more times. Anyone with this problem can try the following it worked for my 46" Sharp TV. Press & hold the down volume at the same time you press and hold the input button and, while holding them plug the unit back in. (make sure it's unplugged before you try this, are it may not work.) This got my opc light to stop blinking after days but, the power light was still on with no picture. So I unplugged it while the green light was still on, then I held the power button down for about 10 seconds are so, then turned it loose and plugged the TV back in and then I got the snowy picture. Then I turned it off and hooked DTV back up and it's been working all day with no problems. I'm not saying this will work for everyone. I just figured I had nothing to loose and everything to gain.
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post #9 of 15
3/16/10 at 5:43am
I had the same problem. On my first set right out of the box, I turned it on and it turned off and the power and opc lights were flashing. I did a search on the internet and found the above soultion. It worked but I still had no picture. Had sound...the picture would come on for a couple seconds, than black screen. Call service and they sent out a tech. The inverter board was loose. All they had to do was tighten it. I ended up getting a replacement for this set because of dead and stuck pixels.

When the replacement came in, we hung on the wall and turned it on. Power came on with picture for 30 seconds then turned off and got the flashing lights again. Called Sharp and they said they would send another replacement instead of sending a tech out. Every time we turned off the tv, we had to do the reset thing on it. Before the 2nd replacement came, it was working fine.

With the 2nd replacement I have had no issues.
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post #10 of 15
8/14/11 at 8:29am
Thank you kirkmacdonald! Your fix was awesome! After reformatting the USB to FAT (I did a full reformat, not the quick format), I copied the file over to the USB drive
uplugged the TV
plugged in the USB drive
plugged in the TV
power light came on with no picture
held down the power button and volume control ( + or -, don't remember)
picture came back on with "firmware now updating" message
All is good now.... You da man!
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post #11 of 15
8/17/11 at 6:15am
Quote:
Originally Posted by Kanishka View Post

I just received a Sharp Aquos LC37D64U from Dell.com this past Friday.
I watched the unit all week while it was hooked up to my Digital TV box via component cables, everything worked and looked fine, other than the OPC sensor going up and down.

I than decided to hook up my HP Elite Desktop to it, and the unit will not stay on any more. I will press power, the tv will turn on, than I could select my input, than all of a sudden, the screen goes blank and the OPC & Power Light keep flashing. I can't see a thing anymore ?Not even when I hook the TV up to the cable box again!

What gives? This is a brand new unit, was working fine, than this. I read a few threads where people say its a power supply issue. Is this true? Would I now have to go return this to Dell to have them fix it? Or is this not the case, and it is a fix I can do?

I really want this TV to work, it looked great all weekend, now I want to see a picture again!

Please help

I turned off the TV then turned it back on and on the side panel there is an input button. I hit that and it turned off the opc light. Then I set the tv back to the factory defaults and the problem is fixed. Been on now for 2 hours and no OPC light - I think Sharp should recall all these TV's and fix this problem once and for all. If auto makers have to recall their flubs then tv manufaturers should as well. Let me know if this helped anyone.
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post #12 of 15
9/25/11 at 7:40pm

I had a very similar problem with my LC-37DB5U. My set is about 5 years old and has had no other faults other than the recent OPC light flashing and the set turning off. After reading the forums I was sure I was going to have to get a new TV as it would not be cost effective to start replacing PCB's. Well I seemed to have fixed it with surprisingly little effort, and it has been running like a good one for the past three weeks. I actually did two things but I'm not sure which one fixed it.

I turned the set around on the TV stand, really so I could see what screws I would have to take out if I was going to take a look at the guts inside. This is when I noticed that the power plug was not a good tight fit, it dropped out very easily, so I forced it back in hard using my two thumbs and sure enough it seemed to go in a further ¼ but took quite a push. Could it have been a bad power connection?

The other thing I did was related to the HDMI input. This set only has one HDMI port so about a year ago I got myself one of those 5 to 1 HDMI splitters. Now I don't have the kids leaning over the set pulling the back panel off every time they wanted to swap from DVD to Xbox 360 to PS3. When I got this black box HDMI switching unit I had already read reports that it works without using the 5V power supply they provide, and sure enough it did, so the power supply stayed in the box as I have enough spaghetti hanging around the back of the TV without adding yet another cable. Recently that got me wondering if the HDMI signal strength was in some way being compromised, especially now that we had added yet another gaming system with acquisition of our new PS3. So I ended up fitted the 5V power supply just in case. Since making these two changes I have had no further incidences of flashing OPC LED's.

 

Update: wouldn't you know it the same problem came back a few weeks later. But the good news is that I now think I have finally cracked it. In desperation I swapped out the HDMI cable that went from the single HDMI port in the back of the TV to my black box HDMI signal switching unit and have not had one single occurrence of an OPC flashing light since and its been that way for at least 6 months. So it was as simple as a bad HDMI cable.


Edited by Bazil - 7/8/12 at 7:53pm
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post #13 of 15
9/28/11 at 11:52am
Quote:
Originally Posted by leela222 View Post

I had the same problem. On my first set right out of the box, I turned it on and it turned off and the power and opc lights were flashing. I did a search on the internet and found the above soultion. It worked but I still had no picture. Had sound...the picture would come on for a couple seconds, than black screen. Call service and they sent out a tech. The inverter board was loose. All they had to do was tighten it. I ended up getting a replacement for this set because of dead and stuck pixels.

When the replacement came in, we hung on the wall and turned it on. Power came on with picture for 30 seconds then turned off and got the flashing lights again. Called Sharp and they said they would send another replacement instead of sending a tech out. Every time we turned off the tv, we had to do the reset thing on it. Before the 2nd replacement came, it was working fine.

With the 2nd replacement I have had no issues.

you will just a matter of time sharp is rolling the dice till you get 12 moths and 1 day from your original purchase of the first set then tell you to go fly a kite
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post #14 of 15
10/9/11 at 8:22pm
I recently received a sharp aquos lc46d43u in mint condition. The TV set did not power on at all (not even power stand by light) So I opened it up to find the power supply board with some nasty burn marks on the side with the solder on it. I purchased a new power supply online and after installing it I am having the issue of the TV turning on and the power light and OPC flashing three times. I read this forum and thought I had found the answer to my problem but unfortunately I cannot find the firmware update for this model at all. Can Someone please help me!?
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post #15 of 15
8/26/12 at 12:52am
Quote:
Originally Posted by kirkmacdonald View Post

I have a Sharp LC-46SE94U


I experienced this exact problem when I tried to do a firmware update yesterday to Version S0809031. Here's what happened


1) I downloaded the file, unzipped, and put it on a USB thumb drive and connected the USB drive to the TV.

2) I ran the software updater in the TV menu

3) The TV went blank is it said but the TV broadcast picture returned immediately and no update appeared to have happened.


After that happened the TV would only flash as described in the previous posts when it was turned on. However if I plugged the USB thumb drive back in the TV would turn on normally. Each time I'd try the update and each time it would fail.


Here's how I solved it:


a) The firmware update instructions say the thumb drive needs to be formated in FAT filesystem. My drive was FAT32.

b) I reformatted and tried the upgrade again and this time the upgrade completed normally.


Now the TV turns on and off normally.


Signed up for the sole purpose of stating this post just saved my TV. (and me about $500)

THANK YOU
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