Re: Plasma sony ke-p42m1 does not display nothing
so you believe its cold joints il try look closer, the only thing is that no matter where i heat, on those places, it will get on.
thank you
Macedopt
Member
Last Activity: 09-29-2014, 11:53 AM
Joined: 02-18-2013
Location: Azores
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Re: Plasma sony ke-p42m1 does not display nothing
Hi,
So i run another tests and it seems theyre 2 places where i can heat and tv will go on, as shown in the picture, i have resoldered pretty much evrything on those areas, and still nothing, when the hardware gets cold i cant get no image.
Notice that i only heat for about 5 sec, about 350 degrees, wich i believe is not enough to melt the solder.
As tom66 said it might be bad caps, but i wanna be sure, cant the transistrs or maybe thos chips be heat sensitive, in my area caps are expensive...Leave a comment:
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Re: Plasma sony ke-p42m1 does not display nothing
Ok,
just tried to heat difrent zones on the g2 board, 10 sec of air each, and no matter where i place the air it turns on, it cant be could joints because i dont stay long enough for it to melt.
dont know what the hell is happening to it.
any toughts guys
thksLeave a comment:
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Re: Plasma sony ke-p42m1 does not display nothing
Thanks tom66
So youre saing that the caps might be ruined?Leave a comment:
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Re: Plasma sony ke-p42m1 does not display nothing
Hi,
Sorry to bring back the post, but im in serious need of help, hope i can count on you guys XD.
So i have the same tv thats here, but cant manage to put it working, the failure is basically the same, i can put it to work only with a mere 10 secs of blasting hot air gun (about 350 c) in the top corner of the g2 power supply, so i resoldered most of the b side of the board execpt the smd components, and cant manage to put it working, but evrytime i use the air gun it works failing if i let it complety...Leave a comment:
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Re: LG Flatron
hi,
Sry for the delay, didnt have the opurtunity to come here, regarding your questions i try to measure it powered on bunt cant acess the componets the build on this screen basicaly dont let you test it powered on, i have recaped the board with low esr caps and dint solve the problem, i dindt recap the 450v one, i still can hear a gruning sound coming from the inverter section, il try buy the inverter and then see if it solves.
il keep you guys update, ty for the link to ebay seller might buy from him.
thanks a lot...Leave a comment:
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Re: LG Flatron
Hi selldoor
Sry for my late reply have been busy and could not reply erlier, yes my tranformer is the IT-007 il search it on ebay and try talking to the seller.
I still have not rrecap the board, will do it on weekend, if it doesnt work il try buy a coil and capacitator tester, when you guys recap do you recap the ceramic caps too or only the electrolitics?
Thank you so much for the replys i wish someday i can return the favor.
Selldoor can you be more specific in the question you need me to answer?...Leave a comment:
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Re: LG Flatron
Hi guys
ty for all the info, il try if a full recap will solve the problem, and then post the results, just one more quick question when testing the transformer what results should i expect.
Sry for all the stupid questions.
RegardsLeave a comment:
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Re: LG Flatron
Hi,
Here are more pics without flash as you said, il try replace all the capacitors, from you experience you dnt think its the transformer right, im talking about the square where the ccfls conect, the photo nº 99.
By measuaring the capacitators what values i should expect? or i need only to see if they are charging and discharging?
thank you
regards...Leave a comment:
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Re: LG Flatron
Hi,
i could only post the photos today, hope there will be of any use, if you need anything more just ask.
the photos are very low quality but is the best i can manage, only have camera on phone. so sry.
Think if i replace all capacitors i will solve the problem? what about those ceramic caps i cant get them where i live. do i need to replace them too?
best regards
Andre Macedo...Leave a comment:
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Re: LG Flatron
Hi,
Thks for the response, i will run this tests when i get home, aswell take care of the pictures to send you guys.
just one quick question, what values do i set to measure the caps on the multimeter, and what do i expect? can i test them "in circuit" or i need to desesemble them?
as for the cold joints, i resoldered what it seem to me a potential cold joint, altough the solder i used was of bad quality and things got bit dirty, youl see what i mean when i send you the photos.
thank you for all...Leave a comment:
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Re: LG Flatron
Hi,
ty for the quick response and the welcome greetings, i am at work rigth now and therefore can only send pictures of the board later, i used to have a good multimeter but my tool case was stolen and know what i have is those very basic multimeters, it cant measure caps doesnt have the Faraday option, can olny test them using the ohmimeter, but it isnt working why i dunno, maybe im doing something wrong.
As for the Display model it is the LG Flatron w2246s - BFW.AEUODPN
the component where i think the buzzing is comming...Leave a comment:
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LG Flatron
Hi badcaps community
Hope im not breaking any rules here, the thing is i got an LG Flatron 22" and it has the "2 sec to black" dissease, differing only that image doesnt appear even with flashlight or sun light.
I have tested the fuse, diodes, still havnt tested the caps and other components but i detected something strange and tought of asking you guys for a little help, the thing is that when i turn on the Display, i hear a buzzing in what i think its the transfomer part of the board, where the ccfl conect, so i ask of you what i should do in a situation...
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