Re: 37LH5000 Switches itself off
Check BRI on new board. You could have a dud main board...
Check BRI on new board. You could have a dud main board...
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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. -
Re: 37LH5000 Switches itself off
no it does the same as the old board so obviously isnt the fault.Comment
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Re: 37LH5000 Switches itself off
what else can i test?Comment
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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: 37LH5000 Switches itself off
cant unless maplins sell them? wat did u have in mind?Comment
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Re: 37LH5000 Switches itself off
Maplins will sell them.
Forcing PSON, BLON and BRI high and testing backlight.
If the screen stays lit, the problem must be on the main board.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: 37LH5000 Switches itself off
Personally i think the main board is fine, its highly unlikely both main boards new and old would have the same fault?Comment
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Re: 37LH5000 Switches itself off
You know... I used to think this. I mean, what's the chance?
But quite often, a particular model only has one or two common problems.
And these boards come from smashed screen sets.
But consider this: Your TV has stopped working properly, but you determine that hitting it makes it work (perhaps it doesn't, but you think it does because it's hard to correlate.) And then one day you hit it too hard. Oops, the screen breaks. So you drop it off at the dump.
TV scrap guys pick up a TV (if it doesn't get crushed for metal first), strip it out, and sell the parts. No testing is ever done.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: 37LH5000 Switches itself off
i guess so, but how far do u go. do u keep buying the same part and get the same part everytime only to find it faulty or so u think lol, u could never get to the bottom of it unless u had a completely working tv the same and swap out each board till u get the right one.Comment
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Re: 37LH5000 Switches itself off
Well, yeah, but there's only one board that controls the LCD brightness via BRI, and that is the main board. Unless LG have done something silly like feed it from the T-con, but I can't see that happening.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: 37LH5000 Switches itself off
If you disconnect the BRI line from the main board to the inverter board and use 1K resistor between the BRI pin on the inverter board and 5V, and another 2K between the BRI pin and ground which will give BRI PIN 2/3 of 5V feeding the BRI pin. If the backligts stay on steady then the inverter is OK.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: 37LH5000 Switches itself off
Just to let u know it was the inverter board at fault. Board replaced and working fine now.
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Re: 37LH5000 Switches itself off
I am surprised by this eventual conclusion.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: 37LH5000 Switches itself off
No doubt! I thought i would post it up anyway at least its abit of info for you too in case u see anyone else with the same fault in the future lolComment
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Re: 37LH5000 Switches itself off
Hi. I've got same board from LG37LH4900 but I dont have any voltage no where on the board, except 220 v on the power line and on the Transformer after that stage is no more than 0.09v just for few moments and drop.Comment
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When compared to a direct VGA connection, these 2 switches both output a darker image. The switches are:
4-port Omniview Pro2 f1dz104t
8-port Omniview either f1da108t OR f1dz108t (look and function same, OSD may be only difference.)
The 4 is dimmer, the 8 is massively dimmer - both with same AC adapter and cabling.
AD ADAPTER:
There were issues with previous AC adapter, it failed during lightning strike that blew up TV and other stuff and tripped a 15 amp breaker in the main panel which also had a whole house Cutler Hammer surge... -
Hisense H60N5705 installed in a conference room, turns off automatically a few minutes after being switched on.
Problem occurred suddenly, during a video conference. Switched on again by the remote control, it continued to work for a while and then switched off again.
Power cable and HDMI cable checked.
No changes by connecting the TV to another source but, even if it is left on the OSD menu, it stays on for a few minutes and then switches off.
So they took the TV (a 60' which is not easy to handle) to the lab and asked me to check it.
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These switches are bad and I need a replacement.
The dimension are:
L: 10mm
W: 5mm
H: 4.5mm
Pins are 5mm center to center both length wise and width wise.
Any help would be appreciated.... -
MSI GP62 6QF - powers on, keyboard and power button lights up, then switches off.
Motherboard is: MS-16J51 (i think).
Symptoms:
1) press power button: keyboard and power button leds light up.
a) nothing on the screen.
b) fans are not spinning.
c) no sounds.
2) after about 1 min 15 secs the laptop switches off.
Video of the issue: https://youtu.be/Q913lEgnYZ4
I have tried flashing the bios, which I download from:
here.
Not sure this board has a separate flash chip for the EC.... -
Hi
Bit of a weird one. Unit will only stay on for a few minutes and functions correctly while it's on. Output to speakers normal. Then switches off. No power, no standby, unit is dead. 10 minutes later, it can be turned back on and functions normally again. It's not generating any heat. Has anyone seen anything similar ?
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