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I have a Fix for LG TV's that won't turn on - Page 2

post #31 of 81
Quote:
Originally Posted by kostas-gr View Post

Hello guys, this thread is old but i hope ill get some help

I recently had to upgrade an lg6000s firmware to use a CI card
after successfuly upgrading the firmware I turned it off and afterwards it wouldnt turn on again

(Green light blinks about 19-20 times and then remains steady)

I thought it was the firmware so
I tried connecting via terminal as this thread suggests but all it does is download information from the tv
I tried taping escape but it wouldnt go to the command line

any clues ??
Thanks in advance....

after you downloaded the firmware file in to the TV, did you type reboot to save the file and execute the firmware?

Boky
post #32 of 81
Does anyone have any ideals about a Element 40LE45Q, the power lite is BLUE does not flash or turn red, It turns on blue when you plug it in, but has no sound or picture.

Thanks
post #33 of 81
can i please share see your post x
post #34 of 81
Quote:
Originally Posted by bmirto127 View Post

The problem began with the power being inconsistent and not responding to the controls. Now, if i let my tv sit unplugged for a couple weeks it comes on once but then when i turn it off it doesn't come on again. The light comes on and the screen brightens a bit, but there is no picture or sound. I read a variety of forums and replaced the capacitors, but it didn't work. I thought that maybe they were soldered wrong because a friend did it, so i bought a whole new power circuit board. That didn't work either, so based off my little knowledge of circuitry and some further digging i thought that maybe enough power wasn't making it to the tv due to a problem in the noise filter, so i replaced that as well. Now i'm sitting here collecting enough parts to build a brand new tv when the two year old tv I've been trying to fix for a year is still broken.

I would greatly appreciate any thoughts or solutions to my problem.

peace out,
bmirto


dont believe anything these 13 year old post about everything is a capacitor issue. there mom told them that and they spew it all day every day. hopefully they grow up
post #35 of 81
Hey guys! Will Electrobit's solution fix my 37LG50(rev01) as well? The little bastard takes hours to turn on, the bottom right red light will blink like a very slow heart beat, sometimes the screen will turn on for a second or two but promptly shut itself back off, if I don't find a solution I will start beating my kids, thanks!
post #36 of 81
Hold your horses, seems to me you're confused:
Electrobit post explains how to recover bricked TV after accessing "secret menu" or bad firmware reflash. Did you do that? From your problem description, it seems your TV may have bad capacitors, discussed later and probably would need the other fix, opening power supply and resoldering new capacitors. As always in this cases, this is only a guess and even when done properly doesn't guarantee success. I can confirm bad capacitors were big issues before for TV and computer makers, so it makes sense and you could always visually see if this seems to be the problem (leaking caps with bulges on it), before soldering things around. Of course some prior experience with soldering and discrete components is almost required. I would assume TV is out of warranty and since it doesn't work anymore opening it can't make it much worse?
post #37 of 81
Quote:
Originally Posted by electrobit View Post

This tutorial is to fix a north american lg tv with a bad flash. It involves opening up the tv if the first fix doesn't work. So it is divided into 2 sections. This tutorial requires a fair amount of technical expertise.

Things you need (first fix):
1. A null modem serial cable.
2. A pc with a serial port.
3. A terminal emulator (google "ZOC terminal emulator").
4. A firmware / epk file for your tv (Search for "north american epk" or something like that with this forums search function).

The first fix involves performing these steps:

1. Connect your tv and pc together with the null modem cable
2. Open zoc or another terminal emulator(I think zoc is the easiest)
3. select "serial / modem from the 3rd dropdown box from the top and press configure.
4. press scan then select "9600" as your speed "8N1", "RTS signal off", "CTR signal off" and uncheck "cd signal is valid".
5. press ok and then press connect.
6. turn your tv on and quickly tap the escape key on your keyboard until "mstar#" comes up in the terminal.
7. press enter once then type "swuz"(the command to load the firmware).
8. Select the epk file you downloaded earlier when a window comes up and press enter.
9. If you did everthing right the firmware should start uploading to the tv. It will take a while so do something else while your waiting.
10. Once it finshes uploading wait for the messages to stop and the "mstar#" text to come up. then type "reboot".
11. If everything went right your tv should boot up. You'll need to fix the settings in the service menu to their orignal values. Do that before anything else.
12. Your done! Use your tv!

Hope this helps someone, and sorry for the wait! Please tell me if this works for you!

The second fix is coming soon.

you basically updated the firmware? would a factory reset work aswell?
post #38 of 81
I know this is old, but is there a second part to this where you have to open your TV?
post #39 of 81
Hi, can you please help me with your solution? sscham4775@yahoo.com
post #40 of 81
Please my friend I'm dying! How do I get this tv on? It's not even that old. When it's on , it's perfect. Thanks so much in advance for your help.
post #41 of 81
Thread Starter 
Wow, I just found my old thread on google... Didn't realize people would be so interested in this.
I guess I should write the second tutorial. The fix basically works by emulating part of the startup sequence on your tv. Its actually quite simple although you will have to open the tv(voids warranty).

Here it goes:

What you need:
1. 2 10kohm resistors( 1/2 watts from radioshack should work)
2. A screw driver(duh)


1. Open the tv (simply remove the stand and all outer screws)
2. Once opened find the flat cable connecting the brown board (Power Supply) to the green board (Mainboard) directly next to
it.
3.Disconnect the cable at the power supply (Not the mainboard)
4.Insert one lead of BOTH 10k resistors in the top of the connectors socket that relates to the 5v pin (displayed on the power board).
5.Take one of the remaining leads and insert it in the pwr_on pin and the other in the inv_on pin (need to confirm this is the exact name of the pin.).
Do this, like before, on the top of the conector where the wires come out.
6.Reconnect the connector back to the power supply ensuring the resistors have electrical contact with the each pin.
7. Plug in and turn the tv on. If it powers up normally you can reassemble the outer shell and enjoy your newly fixed tv!
8. If it doesn't (or partially) work you may have other problems lurking within your tv unrelated to this tutorial and may or or may not be fixable.


Hope this helps someone!
post #42 of 81
i have that kind of problem. can you help me?
post #43 of 81
HI... I need some help please...

After I made Firmware update my lg 32LK330 wont start. So I followed your tutorial

I made a serial cable RS 232C crossower "pc pin 2 to tv pin 3, pc pin 3 to tv pin 2 , pc pin 5 to tv pn 5" .... 3 Wires
I conected the cable to pc an tv
I downloaded Zoc terminal .. "trial"
I selected "serial / modem
I selected "9600" as your speed "8N1" "RTS signal off", "DTR signal off" and uncheck "cd signal is valid". ! "DTR not CTR"
And i press connect " for the first time I get [SERIAL/MODEM] CONNECTED TO PORT COM1 (9600-8N1) fine
But if I try to conect one more time I get failed connection.

I turned on the TV and when I tap ESc nothing happens.

I-m not shure if the cable is ok or how o get a crect connection..

Thancks in advance.
post #44 of 81
HI... I need some help please...

After I made Firmware update my lg 32LK330 wont start. So I followed your tutorial

I made a serial cable RS 232C crossower "pc pin 2 to tv pin 3, pc pin 3 to tv pin 2 , pc pin 5 to tv pn 5" .... 3 Wires
I conected the cable to pc an tv
I downloaded Zoc terminal .. "trial"
I selected "serial / modem
I selected "9600" as your speed "8N1" "RTS signal off", "DTR signal off" and uncheck "cd signal is valid". ! "DTR not CTR"
And i press connect " for the first time I get [SERIAL/MODEM] CONNECTED TO PORT COM1 (9600-8N1) fine
But if I try to conect one more time I get failed connection.

I turned on the TV and when I tap ESc nothing happens.

I-m not shure if the cable is ok or how o get a crect connection..

Thancks in advance.
post #45 of 81
Quote:
Originally Posted by electrobit View Post

This tutorial is to fix a north american lg tv with a bad flash. It involves opening up the tv if the first fix doesn't work. So it is divided into 2 sections. This tutorial requires a fair amount of technical expertise.


Things you need (first fix):

1. A null modem serial cable.

2. A pc with a serial port.

3. A terminal emulator (google "ZOC terminal emulator").

4. A firmware / epk file for your tv (Search for "north american epk" or something like that with this forums search function).


The first fix involves performing these steps:


1. Connect your tv and pc together with the null modem cable

2. Open zoc or another terminal emulator(I think zoc is the easiest)

3. select "serial / modem from the 3rd dropdown box from the top and press configure.

4. press scan then select "9600" as your speed "8N1", "RTS signal off", "CTR signal off" and uncheck "cd signal is valid".

5. press ok and then press connect.

6. turn your tv on and quickly tap the escape key on your keyboard until "mstar#" comes up in the terminal.

7. press enter once then type "swuz"(the command to load the firmware).

8. Select the epk file you downloaded earlier when a window comes up and press enter.

9. If you did everthing right the firmware should start uploading to the tv. It will take a while so do something else while your waiting.

10. Once it finshes uploading wait for the messages to stop and the "mstar#" text to come up. then type "reboot".

11. If everything went right your tv should boot up. You'll need to fix the settings in the service menu to their orignal values. Do that before anything else.

12. Your done! Use your tv!


Hope this helps someone, and sorry for the wait! Please tell me if this works for you!


The second fix is coming soon.



HI... I need some help please...

After I made Firmware update my lg 32LK330 wont start. So I followed your tutorial

I made a serial cable RS 232C crossower "pc pin 2 to tv pin 3, pc pin 3 to tv pin 2 , pc pin 5 to tv pn 5" .... 3 Wires
I conected the cable to pc an tv
I downloaded Zoc terminal .. "trial"
I selected "serial / modem
I selected "9600" as your speed "8N1" "RTS signal off", "DTR signal off" and uncheck "cd signal is valid". ! "DTR not CTR"
And i press connect " for the first time I get [SERIAL/MODEM] CONNECTED TO PORT COM1 (9600-8N1) fine
But if I try to conect one more time I get failed connection.

I turned on the TV and when I tap ESc nothing happens.

I-m not shure if the cable is ok or how o get a crect connection..

Thancks in advance.
post #46 of 81
Quote:
Originally Posted by electrobit View Post

This tutorial is to fix a north american lg tv with a bad flash. It involves opening up the tv if the first fix doesn't work. So it is divided into 2 sections. This tutorial requires a fair amount of technical expertise.


Things you need (first fix):

1. A null modem serial cable.

2. A pc with a serial port.

3. A terminal emulator (google "ZOC terminal emulator").

4. A firmware / epk file for your tv (Search for "north american epk" or something like that with this forums search function).


The first fix involves performing these steps:


1. Connect your tv and pc together with the null modem cable

2. Open zoc or another terminal emulator(I think zoc is the easiest)

3. select "serial / modem from the 3rd dropdown box from the top and press configure.

4. press scan then select "9600" as your speed "8N1", "RTS signal off", "CTR signal off" and uncheck "cd signal is valid".

5. press ok and then press connect.

6. turn your tv on and quickly tap the escape key on your keyboard until "mstar#" comes up in the terminal.

7. press enter once then type "swuz"(the command to load the firmware).

8. Select the epk file you downloaded earlier when a window comes up and press enter.

9. If you did everthing right the firmware should start uploading to the tv. It will take a while so do something else while your waiting.

10. Once it finshes uploading wait for the messages to stop and the "mstar#" text to come up. then type "reboot".

11. If everything went right your tv should boot up. You'll need to fix the settings in the service menu to their orignal values. Do that before anything else.

12. Your done! Use your tv!


Hope this helps someone, and sorry for the wait! Please tell me if this works for you!


The second fix is coming soon.



HI... I need some help please...

After I made Firmware update my lg 32LK330 wont start. So I followed your tutorial

I made a serial cable RS 232C crossower "pc pin 2 to tv pin 3, pc pin 3 to tv pin 2 , pc pin 5 to tv pn 5" .... 3 Wires
I conected the cable to pc an tv
I downloaded Zoc terminal .. "trial"
I selected "serial / modem
I selected "9600" as your speed "8N1" "RTS signal off", "DTR signal off" and uncheck "cd signal is valid". ! "DTR not CTR"
And i press connect " for the first time I get [SERIAL/MODEM] CONNECTED TO PORT COM1 (9600-8N1) fine
But if I try to conect one more time I get failed connection.

I turned on the TV and when I tap ESc nothing happens.

I-m not shure if the cable is ok or how o get a corect connection..

Thancks in advance.
Edited by Gratyan Olteanu - 6/12/12 at 7:02am
post #47 of 81
i have a 46 in lg plasma tv that wont turn on.when u hit the power button u hear a click the tv lights up and then off iam interested in seeing how u fixed urs
post #48 of 81
please send me the fix for my lg tv not powering on
post #49 of 81
i bought a 47in LG 3D tv 2 months ago and i am getting this problem, where the red stand by light is on and the tv will not turn on ...via the remote controls and the tv it self, i would appreciate if you could help me with this constant problem...im looking to get my money back due to the frustration this is causing me.
post #50 of 81
Please post ur tutorial! I have the same issue.
post #51 of 81
Hi, please help. I think I have the same problem with my LG 42 in LCD. I got one solution and that was to hit it a couple of times, it work ed when I hit it once every 3 days or so . Now I have to hit it every 3 minutes or less. Please help me fix it.
post #52 of 81
I have an LG, 37LC7D, TV with this problem. When you turn on the TV from standby, the power led on the bottom, right corner, alternates, blinking red and green for about 15 - 20 minutes before the TV comes on. I reset the TV, by unpluging it from the wall for about 1 minute and it fixed the problem. This reset fix was suggested by LG Customer Service. I don't know if this is a permanent fix. Only time will tell. If this doesn't permanently fix the problem, I will have to take it to the shop for repairs to the power supply. The cost for these repairs may not justify repairing it. In that case, the only solution is to purchase a new TV.
post #53 of 81
Thread Starter 
For everyone looking for the 2nd tutorial see post 41 of this thread. It must be hiding in plain sight. rolleyes.gif
post #54 of 81
Hi I have a 50 in lg plasma it takes for ever to turn on can sit their for at least half an hour and is getting worse any help billy
post #55 of 81
I have thesame problem.Can you posthow to fix
post #56 of 81
What is your fix. I have an LG that it takes several time pushing the on button before it will come on.
post #57 of 81
i would love a tutorial on this. my tv just stopped working and i don't want to go out and pay someone to do it if i can do it myself. please and thank you
post #58 of 81
My 2 months old 47LM6200 turns off itself a couple of days ago, the red standby led start blinking and stayed that way until I unplugged it. I read online that keeping it unplugged for a couple of days and try again maybe works, but in my case didn't work, instead now the standby led is on when I plugged the tv and if I try to turns it on it begin to blink again, now 2 short and 1 long.

So far (since my warranty isn't valid outside US) I test the psu and all the voltages are normal, no broken capacitors either. So my questions are:

Is possible that the tv auto update the firmware and failed? If it is true, how can i use the method on this thread since my tv doesn't have a rs232 port?
Should I test another values on the psu other than output voltages?
Do I need to replace mainboard? Is there a way to test it?

Thank you very much for take the time to answer me.
post #59 of 81
I have a problem. I just bought an LG LCD TV. When I tried to switch it on it does not go on but the light is flickering and it does not show out the "setting screen"; but it is just black as if it is off.
post #60 of 81
I have a LG LCD TV with a different problem than I see typically posted here. My TV will not do ANYTHING. I press the "on" button and get nothing. No red LED, no clicking... Nothing.
I have opened the back and do not find any blown caps. I checked the 6.3 amp fuse right by the power input to the PS board and that's fine.
Has anyone seen this problem before?

Thanks for any help...
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