Re: Sharp LCD
Hey that is a good video. Still chicken though! LOL
I wonder how hard it would be to get a replacement cable to try first?
Menessis
Menessis
Senior Member
Last Activity: 03-18-2016, 08:00 PM
Joined: 11-30-2010
Location: Canada
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Re: Sharp LCD
Ya I think it's near the cable connection I talked about before. It's in the last pic I posted. But it's a surface mounted connector and the solder joints are tiny! I don't know if I could solder them without shorting it all out!
MenessisLeave a comment:
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Re: Sharp LCD
I haven't had time to tinker with this TV for a while.
Any thoughts of how to go at this thing in a logical order?
MenessisLeave a comment:
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Re: Sharp LCD
Well I spoke too soon. Not even 5 minutes after my last post my display started to "streak" from the top down. All different colours. I just tapped the side and it was fixed! I don't believe this thing.
One thing I did notice is once the problem kicks in the picture is not updated.
MenessisLast edited by Menessis; 01-07-2011, 04:01 PM.Leave a comment:
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Re: Sharp LCD
OK the tv comes on but it seems like when it's cold it shows the problem in post #5.
After taking the last picture of that cable I put a tie strap on it to hold them all in one place. Since then the tv has been working. I am using it as a second monitor to test it out.
MenessisLeave a comment:
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Re: Sharp LCD
I'm going to pull the main board off again (green) and re-solder the connector for the wires that go to the T-Con board. Second thought, I looked at it and it's way to small for me to solder.
The only things I seen that didn't look good with the solder is about 5 joints still had flux on them.
The red arrow is where I put some warm air to get it going. And it worked. Next time I tried "wigling the wires and connectors (Blue arrows). And it worked.
I get a picture of it.
Cool link BTW!
...Last edited by Menessis; 01-06-2011, 08:02 PM.Leave a comment:
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Re: Sharp LCD
I dug out that T-Con board and had a look. It's under the Power Supply board. When I warmed up the low voltage caps with the hair dryer I would have warmed up that board too. So starting with a cold tv I warmed up the T-Con board and it seemed to work.
I did look close with a large magnefier and didn't see anything that looked bad. I checked both the main board and the power board. Then again I don't know what to look for.Leave a comment:
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Re: Sharp LCD
OK I re-flowed the solder on that relay. I then put the power supply in the freezer for 5 minutes. Pulled it out, put it back on the tv, turned it on and it worked right away. OK so I put the whole tv outside for about 5 minutes (it's cold here) and when I tried it, the problem is still there! So this would make you think its not on the power supply at all. I also spotted a couple of tiny red leds on the main board (green). The lower one comes on and stays on when the power cord is plugged in and the other one blinks once the tv is turned on.
I hooked...Leave a comment:
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Re: Sharp LCD
Update. Does anyone konw what the black Omron relay does. It's just below the row of caps and the large heatsink.
I put the tv outside in the cold for 5 minutes. Brought it back in. Plugged it in and there is the problem. Then I heard a click, and it started working right. The only thing that clicks is that relay I'm thinking. Can cold effect a relay?
MenessisLeave a comment:
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Re: Sharp LCD
Well bad news. I left this thing plugged in over night and it looks like it is up to its old tricks.
Its been on for about 5 minutes now and hasn't straightned out yet.
I took it back to the kitchen table and pulled the back off. Plugged it in and turned it on. Quess what. It came on no problems!
This makes no sense to me at all.
MenessisLast edited by Menessis; 01-06-2011, 10:25 AM.Leave a comment:
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Re: Sharp LCD
Good idea. I will leave it unplugged over night and see what happens. I left it turned off for a few hours and turned it on with no problems.
I'm hoping it's "re-form cap" thing myself
MenessisLeave a comment:
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Re: Sharp LCD
LOL I just re-read my last post. What I meant by "not plugged in" is that it was a "cold start". Unplugged and sitting in the corner. Soldered in caps, plugged it in and turned it on right away.
I have left it off and have tried it again a few times. It starts right up now. Now I am even more confussed.
MenessisLeave a comment:
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Re: Sharp LCD
Update! Got my new caps in today. Thats the good news. The bad news is that it still has the problem. So much for my logic!
I warmed up the right side of the board where all the low voltage caps are and it worked.
There is only 3 other caps on the board. The two 330uf 220v and the 33uf 350v. I can get them as 'snap in", 3000hours. I could cut the leads on the old ones and solder the new one there??
But it only takes about 20 to 30 seconds to warm up and work right. (was about 25 minutes before). Another thought,...Last edited by Menessis; 01-05-2011, 05:36 PM.Leave a comment:
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Re: Sharp LCD
I'll mail them to you!
MenenssisLeave a comment:
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Re: Sharp LCD
Update.
I Isolated the hi voltage caps from the others with a folded up newspaper. Then did the hair dryer trick on the others. TV came on before long. So I am going to leave the hi voltage ones as is.
Order is placed. Got a mixed bag. FM, FR, HE, and a LXZ just for fun.
MenessisLeave a comment:
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Re: Sharp LCD
Sorry for the confussion. I slowly heated all the caps on that psu. I don't know how to heat just those ones. I guess I could put some cardboard around them and use the hair dryer like some one suggested. I was just trying to see if that was where the problem is. I would just replace them all if I can find them. But then some else sugested that because of the hi voltage they are not likely the bad ones.
MenessisLast edited by Menessis; 01-02-2011, 11:31 PM.Leave a comment:
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Re: Sharp LCD
Well this is my list so far:
1 3 565-1613-ND CAP 680UF 50V ELECT KY RAD 0 1.03000 $3.09
2 4 565-1555-ND CAP 1000UF 25V ELECT KY RAD 0 0.74000 $2.96
3 1 565-1601-ND CAP 100UF 50V ELECT KY RAD 0 0.44000 $0.44
4 1 565-1575-ND CAP 330UF 35V ELECT KY RAD 0 0.50000 $0.50
5 1 565-1464-ND CAP 33UF 400V ELECT KXG RAD 0 1.72000 $1.72
6 6 565-1573-ND CAP 220UF 35V ELECT KY RAD 0 0.50000 $3.00
7 2 P12927-ND CAP ELECT 22UF 50V FM RADIAL 0 0.34000 $0.68
Still have not found the two 330uf 220v better than...Leave a comment:
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Re: Sharp LCD
Ok I can't find anything that fits the two big ones. 330uf 220v The only ones I can find so far are general purpose 1000 hr.
Since these are the "hi" side, could I leave them in?
MenessisLast edited by Menessis; 01-02-2011, 02:21 PM.Leave a comment:
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Re: Sharp LCD
Those ones you circled are all KY's except the one to the right. All I can see on that is CS (M), it's 33uf and 350v.
MenessisLeave a comment:
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Re: Sharp LCD
Post #8 the middle picture shows the two caps on there side. Your probably right Bill. So the KXG's I found are OK then you think?
MenessisLeave a comment:
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