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Old 04-17-2012, 07:28 PM   #1
belippy
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Default LG 1511S needs to warm up!!

It needs about 10-15 mins to start up, it is getting worst now!
Open it up and thought there might be some swollen caps!
All caps seem to look fine, no leak or anything!
Is there anything else that I can do to fix this monitor?
Thanks!

IMG_0382.JPG
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Old 04-17-2012, 07:30 PM   #2
retiredcaps
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Default Re: LG 1511S needs to warm up!!

Quote:
Originally Posted by belippy View Post
It needs about 10-15 mins to start up, it is getting worst now!
This sounds like a classic case of caps with high ESR (equivalent series resistance). As the monitor warms up, the cap's ESR drops and allows the lcd to work.

See my standard answer regarding capacitors (regulars may skip)

http://www.badcaps.net/forum/showpos...84&postcount=3
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Old 04-17-2012, 07:31 PM   #3
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Default Re: LG 1511S needs to warm up!!

I'd almost guarantee it's a bad cap; they don't always swell up. See my post from earlier today: http://www.badcaps.net/forum/showthread.php?t=20109
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Old 04-18-2012, 09:39 AM   #4
belippy
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Default Re: LG 1511S needs to warm up!!

I've just ordered am ESR tester online. Looking forward to have the monitor fixed!!
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Old 04-18-2012, 10:04 AM   #5
selldoor
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Default Re: LG 1511S needs to warm up!!

Quote:
Originally Posted by belippy View Post
I've just ordered am ESR tester online. Looking forward to have the monitor fixed!!
WOW! could buy 2 or 3 or more 15inch monitors for the price of an ESR Meter?
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Old 04-18-2012, 10:38 AM   #6
belippy
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Default Re: LG 1511S needs to warm up!!

Quote:
Originally Posted by selldoor View Post
WOW! could buy 2 or 3 or more 15inch monitors for the price of an ESR Meter?
I still have 1 x 21" 1 x 19" and a few more motherboard to repair!!
Just got the cheapo $60 meter!!
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Old 04-22-2012, 10:05 PM   #7
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Default Re: LG 1511S needs to warm up!!

there are two 1uf 50v caps with a reading of 1
basically the meter didn't move when testing the 2 caps.
Are these caps bad?
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Old 04-22-2012, 10:07 PM   #8
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Default Re: LG 1511S needs to warm up!!

those 2 caps are located in the middle far right of the power board.
2 tiny ones.
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Old 04-23-2012, 07:57 AM   #9
selldoor
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Default Re: LG 1511S needs to warm up!!

A reading of 1 what? did you test in circuit
What make is the meter - how about a picture of it.
Did you get instructions with it - should tell you if caps are ok?

Did you just test these two caps - what about the others?

What make of caps are they?
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Old 04-23-2012, 09:30 PM   #10
belippy
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Default Re: LG 1511S needs to warm up!!

yes, reading at 1 yap.
yes, I tested it in circuit.
it's a in-circuit ESR meter that I got from evilBay.
the other caps are reading with low ohms.
I don't know what brand are the caps, will have to take pics of the caps and the meter.
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Old 04-24-2012, 03:17 AM   #11
selldoor
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Default Re: LG 1511S needs to warm up!!

What is a YAP have googled ESR and YAP - Zilch!
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Old 04-24-2012, 09:00 PM   #12
belippy
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Default Re: LG 1511S needs to warm up!!

I took some pics of 1uf 50v cap

is it ok to replace it with this one:
http://www.digikey.ca/product-detail...504-ND/2504593

IMG_0385.jpg

IMG_0386.jpg

IMG_0387.jpg
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Old 04-24-2012, 09:36 PM   #13
retiredcaps
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Default Re: LG 1511S needs to warm up!!

Quote:
Originally Posted by belippy View Post
I took some pics of 1uf 50v cap
Use Panasonic FC 1uF 50V.

http://www.digikey.ca/product-detail...0312-ND/266321
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Old 05-21-2012, 09:18 AM   #14
belippy
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Default Re: LG 1511S needs to warm up!!

After changing the two x 1uF 50v caps, no more warm up anymore!!

Thanks guys!
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Old 05-21-2012, 09:23 AM   #15
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Default Re: LG 1511S needs to warm up!!

Great stuff - well fixed, but what is 1 YAP -
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