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Asus MK241H no power
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Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: Asus MK241H no power
They seem to be the 805 based on your measured dimensions, I did not look at your links.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
Comment
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Re: Asus MK241H no power
@ashok pamar: That one valure of 200K does not sound right, can we see the pictures of those resistors just to be sure?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
Comment
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Re: Asus MK241H no power
Not sure if anybody has one. I have searched for it but I came up empty.
From where did you get those values since you are looking for a service manual? Do you have the same monitor?
Please if you do, could you take a picture with these resistors, I would like to order the resistors before the IC comes from China.
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Re: Asus MK241H no power
@tibimakai, I am wondering the same thing on how he gets the values of those resistors if he does not have the service manual, we need to see the pictures of those resistors to verify.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
Comment
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Re: Asus MK241H no power
Lately I'm fixing monitors and I have more problems fixing these then TVs.
Now I'm working on a Samsung 245B and everything seems good at least to the point that I have reached checking.
I thought that it will be an easy fix, the 3x68 OHM resistors and it will run, but not.
Capacitors read OK too(18nf, 82uf, 10uf, 47uf).
I guess I will stay away from monitors, it's way to much time goes into fixing them and I don't make enough money. These two monitors I'm planning to keep for myself, otherwise I would have trashed them. One will be on one workbench and the other one the other workbench, with mounts from monoprice.
http://www.monoprice.com/products/pr...seq=1&format=2
Tibor Makai
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Re: Asus MK241H no power
You mean the resistor? You may also what the other person said what they are also since they are cheap.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
Comment
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Re: Asus MK241H no power
I'm not coming back with good news.
I have replaced the IC, the three resistors and still a no go.
I'm getting on pin:
#1 1.78V #5 0.04V
#2 0,00V #6 0.25V
#3 0.00V #7 0.012V
#4 0.00V #8 143.5V
The pin 1 oscillates slightly.
I don't have writen down the R103, but it was 9.xx Kohm.Last edited by tibimakai; 07-23-2012, 12:44 AM.
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Re: Asus MK241H no power
What value should I have at pin#8?
Found this:
http://www.go-gddq.com/upload/2011-0...0610397797.jpgLast edited by tibimakai; 11-13-2012, 02:15 AM.
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Re: Asus MK241H no power
About the same as DC voltage reading at the main DC filter cap (450V cap), pin8 Drain is used for start up.Attached FilesNever stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
Comment
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Re: Asus MK241H no power
Howdy, Don't know if you're still interested, but here are resistor values you were looking for: R124 1k (102), R137 5.1 (5R1), R181 12k (123). R172 is, I believe 0.1 ohm (brn,blk,silv) 1 or 2 watt. Q101, TEA1530 along with above resistors fixed mine. Good luck! BTW, had to scrape away some charring between the pads of a couple resistors.
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