sorry for the late reply, I've been busy these days (work).
Please, find attach the picture of the mainboard
Thanks for the link, a quite interesting reading
Ooops, I don't have equipment for BGA repairing
I think this repair is out of my scope...
alberich2k5
Member
Last Activity: 12-20-2018, 02:59 AM
Joined: 07-13-2018
Location: Barcelona
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Re: LG 37LE500 lcd blinking
sorry for the late reply, I've been busy these days (work).
Please, find attach the picture of the mainboard
Thanks for the link, a quite interesting reading
Ooops, I don't have equipment for BGA repairing
I think this repair is out of my scope... -
Re: LG 37LE500 lcd blinking
vinceroger69, ordered thank you very much
Front led works as usual, I haven't notived any thing different.
I also ordered the caps for the main board, will see if I can get it to work; it is quite exciting hehehe...Leave a comment:
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Re: LG 37LE500 lcd blinking
Will do that angelos, and let you know guys. I need to order the caps, and it is going to take a while. I will let you know as soon as I replace them all.
Meanwhile I'm thinking about buying an ESR meter. Any decent - affordable one you can recommend me?Leave a comment:
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Re: LG 37LE500 lcd blinking
Sorry, I miss explained myself
First I heated the powersupply and turned on the TV, the rebooting was gone but not the blinking.
Later I did the same with the main board, with the same results.
However, once mainboard cooled down, the rebooting issues came back. So i re-heated the main board and they were gone.
Before starting this post I replaced the 6 caps you marked me since the readings for 12V lines were about 11.5V. (That solved that issue for 12V lines but it didn't for 20V and 3.5V lines)Leave a comment:
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Re: LG 37LE500 lcd blinking
@moateez no worries at all, and thank you so much for your time
I did the heating experiment:
Power supply board - still blinking, but no reboot
Main board - still blinking, but no reboots
However, once the main board cooled down rebooting issues came back.
I re-heat it again, et voila, reboot issues gone (but still blinking)
And after few seconds TV was turned on, blinking was gone.
So I guess they are two separete issues?Leave a comment:
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Re: LG 37LE500 lcd blinking
I am really sorry but I couldn't understand what your mean
Where are the capacitors in secondary of power suply? Most power supply capacitors are DIP sized, you mean reflow all of them?...Leave a comment:
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Re: LG 37LE500 lcd blinking
which one is that? (I googled before asking you)...Leave a comment:
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Re: LG 37LE500 lcd blinking
So better I should start looking at main board?
I have no clue were to start on any starting suggestions?
About the 20V line on the power supply, should stop looking at it (is it ok the 18.4v)? or just postpone it?
Thank you very much for your time and patienceLeave a comment:
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Re: LG 37LE500 lcd blinking
Thank you budm for replying
Yes, they are the same.
3.5v are slightly different: once it is working correctly readings are 3.465v
How about the sms resistor I was asking about? Is it correct what I was doing?
thanks...Leave a comment:
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Re: LG 37LE500 lcd blinking
Sorry to insist on this one, but I really want to learn the process of troubleshooting electronics (at least the basic level)
Thanks once againLeave a comment:
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LG 37LE500 lcd blinking
Hi everyone
I am trying to repair my former TV, an LG 37LE5500, mainly for learning purposes.
The issue is: when I turn the TV on it starts blinking and rebooting, repeating this cycle for about 10-30secs. After that, it works correctly with no issues.
I started by looking at the power supply (EAY60803001; attached front and back pictures provided by shopjimmy) measuring the following lines (bunch of cables going to main board):
PIN *******StandBy PWR ON
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ERR-OUT 2.864... -
Re: New Members - please post your introductions here
Hello I'm new to this forum
Very recently I was start feeling very curious about component level repairing, I think it is a very useful skill. I am just an enthusiast, not a professional nor similar
I also like old (retro) computer/consoles, and probably someday I will start repairing some of them.
I Hope to have fun in this forumLeave a comment:
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