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Re: Lg 42lf65 flashing red green light
Still can't see enough detailPlease do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Lg 42lf65 flashing red green light
ok, will take a pic with camera laterComment
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Re: Lg 42lf65 flashing red green light
What sort of think would u be looking for on green side.
All looks same to me lol.Comment
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Re: Lg 42lf65 flashing red green light
I'm just trying to understand the general circuit layout. All components are connected by the light green traces. There is an art to reverse engineering circuits. Budm (another member) is really good at it.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Lg 42lf65 flashing red green light
Still not good enough, Need to be able to actually read all the markingsComment
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Re: Lg 42lf65 flashing red green light
Straight shot and also close up in 8 sections so I can clearly see the traces and the components and be able to stitch up all 8 pictures to form one big pictures.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=24809Comment
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Re: Lg 42lf65 flashing red green light
As a rough guide... if you yourself cannot see the small circuit traces on the picture, then neither can we, and it will not be possible to figure out how the circuit works.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Lg 42lf65 flashing red green light
Are these ones better.Comment
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Re: Lg 42lf65 flashing red green light
Replaced all the caps last night. Then plugged TV in this morning and worked fine. Turned it of and then wouldn't turn back on. Just have green light.
Leave it unplugged for ten mins the turns bk on. And again not bk on.Comment
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Re: Lg 42lf65 flashing red green light
can you check on the connectors the voltages when the sets in the working on condition and when the set is in the fault off condition please can you post the voltages and by the side of the connectors its usually printed what each pin voltages etc are.Comment
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Re: Lg 42lf65 flashing red green light
acd = 5v 5v
pwr =2.8v 2.8v
st 5v = 5v 5v
gnd
inv ctrl = 4.5v 0v
error = 5v 0v
burst dim = 3.4v 3.4v
st5v = 5v 5v
g
a-dim = 1.6v 3.4
6.5v = 6.5v 6.5v
Gnd
3.4 on = 3.4 1.3v
first v reading is when the screens on, 2nd is when it wont turn bk on
hope this helpsLast edited by Ice203; 05-11-2015, 07:01 AM.Comment
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Re: Lg 42lf65 flashing red green light
other plug
19v
19v
g
g
6.5
g
3.4
g
12v
only the top 2 19v stay same, bottom 3 are 0v when tv wont turn onComment
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Re: Lg 42lf65 flashing red green light
inv ctrl = 4.5v 0v: 0V = no backlights on command from the main board.
3.4 on = 3.4 1.3v (not sure what this one is. Is that what is labeled on the pin '3.4V ON'?)
"other plug
19v
19v
g
g
6.5
g
3.4
g
12v"
So the 6.5V, 3.4V, and the 12V are not there when it does not work?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=24809Comment
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Re: Lg 42lf65 flashing red green light
Yes that's correct. 3.4v on. Is what's marked next to it.
And the 6.5v 3.4v and 12v don't work when TV won't turn on.
Hope this means something to u. Cos I not got a clue.Comment
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Re: Lg 42lf65 flashing red green light
OK, try downloading these service manuals:
http://elektrotanya.com/?q=showresul...at2=schematicsLast edited by budm; 05-11-2015, 10:45 AM.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=24809Comment
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Re: Lg 42lf65 flashing red green light
thxs had a read but still no closer in finding out how to repair, dont want to change boards as im sure they r fixableComment
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Re: Lg 42lf65 flashing red green light
OK, I looked at the diagram of the power connectors on the main board, it looks like the main board is the problem due to the missing output signals going to the power supply board.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=24809Comment
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Hi
Im hoping someone might be able to give me some idea of what may be wrong with my Monitor Audio RSW12 Sub.
Ive owned it since new in around 2002, so would really like to keep it running if I can, it was the first βdecent' bit of audio equipment I ever purchased and is a little sentimental.
The issue I had was that it would power up with the red light, but sometimes the green light would not come on and I would get no bass from it. If the green light did come on though, I would get sound out of it.
I have already tried replacing all of the... -
Hi
Im hoping someone might be able to give me some idea of what may be wrong with my Monitor Audio RSW12 Sub.
Ive owned it since new in around 2002, so would really like to keep it running if I can, it was the first βdecent' bit of audio equipment I ever purchased and is a little sentimental.
The issue I had was that it would power up with the red light, but sometimes the green light would not come on and I would get no bass from it. If the green light did come on though, I would get sound out of it.
I have already tried replacing all of the... -
Hi
I have an 820-2610-A motherboard that has no green light.
I have noticed is when I do a SMC reset the light on the Magsafe blinks.
From My understanding, the sys onewire circuit is responsible for the green light on the magsafe
The sys onewire circuit on this model and others is more involved
I was hoping if anyone knows about this and how it works, can reply and let me know
I know this is an old model but I am sure there are people who still works on these or knows about them
I get 1.1v on the C7771 capacitor and will replace... -
Hello everyone.
This is my development machine. I've been using it since two years and half without any problem except sometimes it wouldn't wake up from sleep.
Lately the issue became more frequent and powering it up would take few seconds to show the POST screen.
Then the computer refuses to power on at all. Now only the caps lock button flashes 7 times then stops. The charging light is always on whenever a power source is connected (battery or charger).
I tried long pressing on the power button, after several seconds it would go off then when the button is released... -
Hello Community!
CASE DETAILS
Promblem Signs: Backlight on 1 sec off 7sec > repeat && Red standby light: 1blink, off 3 sec, 2 blinks, off 5 secs, 2 blinks, off 3 sec, restart cycle
13V present on powerboard output. Backlight continues flashing after removing cables to pannel one at a time and even with both disconnected. NOTE: backlight STOPs flashing and remains on when connector between powerboard and mainboard (note Tcon built in) is disconnected.
Tried inserting firmware on USB and left it in for a few hours, but no change
...
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