I was driving around the other day and some idiot had a like new 42PFL5432D/37 Phillips LCD tv Sitting in his front yard by his trash can, waiting to be taken by the trash guys, I jumped out and had it in the truck within seconds, knowing how helpful you all are, there was no way i was going to pass this up! Alright, here is my issue, I have read all forums and posts on this site regarding this model, its had alot of issues, when i first got it, I plugged it in, it immediatly starting making a whistling/hissing/squealing noise, as soon as i turned tv on, the noise got louder, and was whistling pretty loudly, I replaced all the caps with axial leads (didnt have regular at the shack) but plugged back in, and was quiet for a few seconds then slowly started squealing again then got louder and louder, the buzzing noise is coming from a block type thing with yellow tape wrapped around wires, thats what it look s like to me anyways, not too sure, but could be the cap i just replaced as well, does anyone know what happens to these things or how i can fix this issue, i also noticed two diodes with a brownish color under them like they got real hot, and underneath i see a few spots where the flux melted from the solder or something because a few soldered spots have wet brownish looking liquid stuff around them, I am kinda new tho this stuff as i am sure you can tell, I have fixed about 10 of these with your help, but still learning, I want to go to school one day to do component level repairs on hospital equiptment and suchm thanks any help would be great
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Re: 42PFL5432D/37 Phillips LCD TV Hissing noise, Please help?
The transformer ?the buzzing noise is coming from a block type thing with yellow tape wrapped around wires -
Re: 42PFL5432D/37 Phillips LCD TV Hissing noise, Please help?
THATS what i was thinking it was called, do i replace it or just get new board or what?Comment
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Re: 42PFL5432D/37 Phillips LCD TV Hissing noise, Please help?
The guy who put the TV out for trash isn't the only person making a mistake.
1. The power supply requires low ESR caps.
2. Radio Shack does not sell low ESR caps.
3. Don't use euphemisms. I had to reread your post three times before I realized you went to Radio Shack.
First, take an over-all picture of the back of the TV. Next, take two of the power supply - one a of the top, one of the bottom. They must be well lit, and sharp. Make sure they are at least 1000 x 1000 pixels but not over 2000.
If necessary, mark up an additional picture showing the areas where you spotted problems.
Attach teh pictures here using 'Manage Attachments' - below the text entry area.
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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Re: 42PFL5432D/37 Phillips LCD TV Hissing noise, Please help?
Will Do ASAP, Thanks for such fast response, sorry for being an idiot myself, but will get those pics uploaded asapComment
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Re: 42PFL5432D/37 Phillips LCD TV Hissing noise, Please help?
Verify Board number! Either 715T2432-1 or 715T2432-2
Pics on the web (Discount Merchant {not an endorsement} ):
http://photos.discount-merchant.com/...itemid=1105860
Service Manual(s): --> only 2 per day
http://elektrotanya.com/?q=showresul...oria=&kat2=all
3 attached PDFs of the PSU from the 3rd download selection. Pages 52-54
Cap recommendations to follow.
Toastveritas odium paritComment
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Re: 42PFL5432D/37 Phillips LCD TV Hissing noise, Please help?
Basic list of caps from service manual.
You supply this info please:
1) Pics that Plain Bill asked for.
2) Verification of values below
2) Dimensions in millimeters D x H
3) Manufacturer and series codes
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C907 - Mains cap, 180uF to 270uF @ 450v - Usually not necessary to replace
C921 - 100uF @ 25v
C934 - 47uF @ 25v
C946 - 2.2uF @ 50v
*C947 - 6.8uF -OR- 10uF @ 50v
C951 - 1500uF @ 35v
*C952 - 1000uF -OR- 1500uF @ 35v
*C953 - 1000uF -OR- 1500uF @ 35v
C954 - 47uF @ 35v
C955 - 2200uF @ 16v
C957 - 10uF @ 25v
C958 - 47uF @ 25v
* = Model dependent
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Your looking at <$20 worth of caps from either Mouser or DigiKey. Helluva deal for curb shopping!
ToastLast edited by Toasty; 09-19-2011, 09:03 PM.veritas odium paritComment
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Re: 42PFL5432D/37 Phillips LCD TV Hissing noise, Please help?
Progress?veritas odium paritComment
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Re: 42PFL5432D/37 Phillips LCD TV Hissing noise, Please help?
Hello all I'm looking for some help my Philips tv is chirping when I turn it on no picture or anything I took the back off I can't see anything that looks bad but I don't know anything about tv'sComment
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Re: 42PFL5432D/37 Phillips LCD TV Hissing noise, Please help?
Search this forum for "chirp 42PFL5432D/37".Originally posted by Subimobbin View Post--- begin sig file ---
If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.
Please do not post inline and offsite as they slow down the loading of pages.
--- end sig file ---Comment
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