Re: Magnavox LCD TV power fluctuation
I installed the new caps and it worked like a charm. Thanks so much for your help.
dman623
Member
Last Activity: 10-16-2012, 05:49 PM
Joined: 10-11-2012
Location: Denver, CO
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Re: Magnavox LCD TV power fluctuation
Thanks so much for your help. I'll post back here when I've replaced those.Last edited by dman623; 10-11-2012, 08:21 PM.Leave a comment:
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Re: Magnavox LCD TV power fluctuation
I replaced 3 x 1000uf 35v from radioshack
An additional bulging cap is 220uf 35v
I also have:
2 x 33uf 50v
1 x 1000uf 16vLeave a comment:
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Re: Magnavox LCD TV power fluctuation
2 x 33uf 50v
1 x 1000uf 16vLeave a comment:
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Re: Magnavox LCD TV power fluctuation
This is what I have it narrowed down to. It's just a link to mouser, but on your suggestion I suppose I need to look at digikey.
[url]http://www.mouser.com/Panasonic/Passive-Components/Capacitors/Aluminum-Electrolytic-Capacitors/Aluminum-Electrolytic-Capacitors-Leaded/_/N-75hqw?P=1z0wrjwZ1z0z7l5Z1z0sq5yZ1yzvjj0[/url]
The diameter of the originals is about .5 inches or about 1CM and the height is about 1 inch or about 1.5CM
And now that you mention the other caps it actually looks like one of the smaller...Leave a comment:
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Re: Magnavox LCD TV power fluctuation
There is but it is probably a bit closer than it should be. I didn't think about that part when I fit them in there.
So I've narrowed it down to aluminum electrolytic, 1000 uf, 35v, radial caps which gives me 193 results. As far as the temp I only know that it needs to be up to 105 degrees but I don't know about the minimum temp. How about the tolerance? Should I also try to get the same dimensions as the original or does that not matter too much? As far as brands go I've heard that Panasonic and Nichicon are pretty...Last edited by dman623; 10-11-2012, 06:39 PM.Leave a comment:
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Re: Magnavox LCD TV power fluctuation
The only other areas that look like they've burned is one of the cooling fins and one of the connections on the converter.Leave a comment:
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Re: Magnavox LCD TV power fluctuation
I've done my best to look at the diodes and none of them seem to have obvious problems. Radioshack only had one radial so I had to use the axials instead. They had long leads on them so the fit was fine.
I'm going to poke around on the site for a good place to buy caps and which brands and such, but if anyone has links handy that would be great.
Any other ideas for testing the power supply? As for the diodes am I looking for burned/scarred diodes?Leave a comment:
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Re: Magnavox LCD TV power fluctuation
I've changed the previous photos to links only for those who prefer and have uploaded them with manage attachments. Thanks for letting me know....Last edited by dman623; 10-11-2012, 06:05 PM.Leave a comment:
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Re: Magnavox LCD TV power fluctuation
The model #: 32MF337B/27
And pictures of the board with and without flash (apologies for the third one I didn't notice it was blurry)
[url]http://i1146.photobucket.com/albums/o525/Denton_Bayles/IMG_4028.jpg[/url]
[url]http://i1146.photobucket.com/albums/o525/Denton_Bayles/IMG_4027.jpg[/url]
[url]http://i1146.photobucket.com/albums/o525/Denton_Bayles/IMG_4026.jpg[/url]
[url]http://i1146.photobucket.com/albums/o525/Denton_Bayles/IMG_4025.jpg[/url]Re: Magnavox LCD TV power...Last edited by dman623; 10-11-2012, 05:58 PM.Leave a comment:
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Re: Magnavox LCD TV power fluctuation
Thanks for the quick replies. I will take a picture and post the model number as soon as I get home today. As for Radioshack it was all that was immediately available to me. If I can at least determine that it is only caps then I can order some decent ones. Thanks guys.Leave a comment:
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Magnavox LCD TV power fluctuation
I have a Magnavox LCD TV It was working fine and then it stopped. The red light would come on I would start the TV and it would start to turn on and then just turn off and the red light would go out. If I left it unplugged for a while and then plugged it in again I would get the red light again, but it still would not turn on. I opened it up and saw that the capacitors on the power supply were bulging.
So I went to my local radio shack and bought three new capacitors and replaced them. Now when I plug the TV in it makes the power-up energize sound and then stops and then does it...
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