Re: Blaupunkt 23/157I-GB-3B-HBKDU
Hi,
I have a tv of the same model that needs the eeprom 25Q32 bin file? Can you read yours and send it to me? I can then help you troubleshooting your problem.
Thanks.
trutle
New Member
Last Activity: 04-22-2025, 01:22 AM
Joined: 02-04-2014
Location: albergaria
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Re: lg 26LC2R lcd tv backlight turns off
Hi there,
I used a 10K resistor and a 22K pot. Turned pot until i got 2V reading on my meter.
Then lift pin 1 of OZ chip and inject the 2V. That sould solve it.
Thanks.Leave a comment:
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Re: lg 26LC2R lcd tv backlight turns off
hi,
If you have no sound must try other input to see if problem is still happening.
As for the voltages low in psu, you should check all the capacitors in the exit with an ESR meter and replace those with high Esr, it´s the most common problem in psus.
Fo reseting tv, i think i saw a menu in the tv that does that, other than that you mas have a service remocon or a jig that connects to the mainboard to do more advanced service level.
Hope this helps,
LuisLeave a comment:
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Re: lg 26LC2R lcd tv backlight turns off
Hi,
That bypass in the Dtforum doesn´t worked for me.
I have to lift the pin 1 of the OZ and inject there the 2,0V with a voltage divider made with resistors.
I guess the inverter protection is baddly designed, if you have a lamp that has a bad contact and the consumption past the pin 1 voltage we have the protection active.
I´ve measured the pin 1 connected to the board, and gives me 2,2V, witch seems to be enought to activate the protection.
The voltage at this...Leave a comment:
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Re: lg 26LC2R lcd tv backlight turns off
Hi again,
Ok i solved my problem. Can make the backlight work by bypassing the protection of the OZ99361.
Tryed before with an external power supply, and then, tooked 5V from the board and lowered it to 2,0V on pin 1 of the ic.
Tv is now working OK.Leave a comment:
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Re: lg 26LC2R lcd tv backlight turns off
Yes i know that.
Been looking in the master inverter. It seems there is an ic that protects the inverter, OZ99361.
Can someone shed some light on this, can´t find datasheet on it.
It seems it have some protection pins, need to know what voltage to expect.
ThanksLeave a comment:
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Re: lg 26LC2R lcd tv backlight turns off
This is a generic picture of Tcon, not mine actually, u can see on left the flat connection from inverter....Leave a comment:
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Re: lg 26LC2R lcd tv backlight turns off
Hi again,
i have already tried that, same problem.
I also powered the inverters with the power supply simulating the signals with 100 ohms resistor and the problem persists. That made me think that the problem was in the inverters, so i replaced them, but still nothing has changed.
My lamps all light up, so i think there is no problem there also.
If we know what kind of signal to expect in the flat cable from the inverter to the t-con that would be great.
Thanks,
L...Leave a comment:
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Re: lg 26LC2R lcd tv backlight turns off
Hi there,
I have this same model of tv on my bench, exact same problem, backlight shuts off after 2 seconds of image.
Let´s see if together we can find whats wrong with this.
I already replaced the 2 inverters(master and slave) and still have the exact same problem.
I bought the inverters from a reclaim part in Uk, they are sold as 100% working and tested so i guess our problem is in other part.
I think i suspect the T-con board, because there is a small flat cable that goes...Leave a comment:
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