Re: LG 32LH20R No backlights
Nice of you to give us feedback of your success
Robinsosa
Member
Last Activity: 01-15-2025, 01:30 PM
Joined: 11-20-2013
Location: mombasa
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Re: LG 32LH20R No backlights
If you check post #6 I asked you “Does the ballast start Det LED turns on?
If not, then inverter board is probably faulty” The training manual shows clearly where the LED is situated.
Anyway good luck.Leave a comment:
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Re: LG 32LH20R No backlights
Check voltages on P203 on the inverter board per manual.
Pin 1-4 = 24v
Pin 12 inv on/off= High
pin 15 error= 0v
If there are correct then check connections from inverter board to CCFL and for dry joints. If you have CCFL tester you can check the lamps. If the lamps are faulty or the electrodes have blackened, they won't turn on and inverter will shut down.
Does the ballast start Det LED turns on?
If not, then inverter board is probably faulty.
Check the continuity of the transformers,...Leave a comment:
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Re: LG 32LH20R No backlights
From your readings pin 12 INV on/off(P203) is 0v, hence the back light is OFF.
it should be HIGH to switch the inverter circuit. The signal to turn inverter ON comes from the main board. When you were performing the test, the main board is not active since no power is being supplied.
Try to do this:
Disconnect power cable from power supply board to the main board since we want to check power supply and inverter circuit only.
On connector P201 (on power supply board), Connect jumper 10k from pin 11 to...Leave a comment:
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Re: LG 32LH20R No backlights
I had a similar problem. After confirming the CCFLs are good and inverter board is working. I changed the T-con board and TV displayed a picture.
Check the training manual....Leave a comment:
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Re: BN96-03057A Blown Capacitor
I hope this is the schematic diagram for the power supply....Leave a comment:
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Re: Sony Bravia KDL-32BX400 Solid Green Power Light, nothing else!
Try a power refresh and see if that works.
Turn off the power at the power outlet and disconnect the TV power cable from the outlet.
Press and hold the TV Power button for 30 seconds and then release.
Reconnect the TV power cable to the power outlet and switch on the outlet.
Try to turn on the TV and see what happens.Leave a comment:
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Re: Panasonic Viera tv P46st30 no standby light
Check this training manual....Leave a comment:
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Re: Un32eh4003v
I hope this will be helpful:...Leave a comment:
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Re: Samsung UA40J5100 LED SMPS voltage
Check this maybe helpful:...Last edited by Robinsosa; 02-28-2020, 11:59 AM.Leave a comment:
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Re: T - Con shcematic and voltages
T-CON schematic...Leave a comment:
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Re: Samsung LED LCD UE32C5100 no power no stand-by
PS circuit diagram for BN44-0351B...Leave a comment:
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Re: Need to identify blown part to fix set
Polypropylene Capacitor (Film Capacitor)
68nF 1250VLeave a comment:
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Re: Toshiba 40L1600EE LED TV need bios bin help..
Give information on board number and flash memory. Pictures may helpLeave a comment:
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Re: Zenith Z50PJ240 Not turning on
Check this video:
[url]https://www.youtube.com/watch?v=iLXfYZ6-iwQ[/url]Re: Zenith Z50PJ240 Not turning on<b...fYZ6-iwQ[/url]Leave a comment:
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Re: Samsung UN60H7150AF Power Supply
It is Fuji Current Resonant Control IC.
FA6A01
Datasheet:
[url]http://www.datasheetcafe.com/fa6a01n-datasheet-pdf/[/url]Re: Samsung UN60H7150AF Power Supply...eet-pdf/[/url]Leave a comment:
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Re: hisense tv
EEPROM corrupted.
You need to reprogrammed it with new bin fileLeave a comment:
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Re: Hisense ltdn40d36eu
TV Model: Hisense LTDN40D36T
Flash memory GD25Q64BVF
I had a similar problem.
Hisense logo stuck and then reboots.
Remove the flash memory, erase it and reprogrammed it with the bin file supplied by
Nawual. It worked perfectly.
Thanks Nawual for the firmware.Leave a comment:
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Re: Z42pt320
Did you measure the 15V with reference to Floating Ground(FG)?
15V is measured with reference to Floating Ground not GroundLeave a comment:
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