I have already done it with a philips tv, in that case i just shorted out the pads.
now i will disassembly the tv and check how many leds are faulty
daroo
Senior Member
Last Activity: 11-20-2023, 10:45 AM
Joined: 10-08-2014
Location: Trento
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Re: Lg 32lb650v no video,no audio, nothing
I have already done it with a philips tv, in that case i just shorted out the pads.
now i will disassembly the tv and check how many leds are faulty
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Re: Lg 32lb650v no video,no audio, nothing
on the +ve pin when I plug the cord I read 0,1 for a second and then it jumps to 144,5v.
on the -ve pin i read 0,1 for a sec and then 0.Leave a comment:
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Re: Lg 32lb650v no video,no audio, nothing
I have already posted pictures of the boards, you need the back of the two boards?
ThanksLeave a comment:
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Re: Lg 32lb650v no video,no audio, nothing
Hi, I have tested the voltages, I can't test it with tv turned on because it doesn't stay on.
GND 0
12V 12,01v
12V 12,01v
GND 0
24V 24,6v
GND 0
3,5V 3,5/3,6v
3,5V 3,5/3,6v
PWR ON 3,4v
GND 0
N.C. 24,6v
12V 12v
GND 0
24V 24,6v
N.C. 2,1v
3,5V 3,5v
P-DIM 2,1v
DRV-ON 3,5V
thank you!
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Lg 32lb650v no video,no audio, nothing
Hi, I have this LG TV that doesn't work.
When I plug a/c cord nothing happens, except the stand-by led that flashes 4 times (the first blink is faster than the others).
I have tested the voltages on the power board and everything is fine.
Is there something I can check to find the problem?...
Last edited by daroo; 07-04-2018, 03:29 PM. -
Re: HISENSE 32K370WSEU Problem
thanks for your advice...
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HISENSE 32K370WSEU Problem
I have this Hisense 32K370WSEU that makes some vertical and orizontal stripes.
Sound works.
the powerboard looks good
backlight works
Do you have any advice?
Thanks...
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Re: Samsung LE32N73BD screen problem
is there something I can try to fix the mainboard, or to test it?
I searched in the forum and it seems that no one has this problem..Leave a comment:
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Re: Samsung LE32N73BD screen problem
voltages looks good, tried a reflow of the mainboard but nothing changed, still the same problem...
Tried also "shaking" the cables while the tv is on to see if the problem is some connection but the problem is always there...Leave a comment:
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Re: Samsung LE32N73BD screen problem
here are the pictures of the mainboard...Leave a comment:
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Samsung LE32N73BD screen problem
Hi, I have this tv Samsung with a problem. The screen shows some flickering stripes while watching tv. When there isn't any imput or when you press some buttons on the remote (to change input or volume) there is also other points and lines on the center of the screen.
I replaced two caps on the power board that looked bad but didn't solve the problem
Hope the pics will explain better than my bad english
how can i save this tv from the junkyard?...
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Re: PHILIPS 40PFL3008H led backlight repair
I've short out the pads and now the tv works great! i have set the backlight to low and updated the firmware.
ThanksLeave a comment:
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Re: PHILIPS 40PFL3008H led backlight repair
Thanks for your advice,
If I just bridge the pads and set the brightness of the tv on low, will the other leds burn easily, or the panel will be just a little bit uneven?...Leave a comment:
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Re: PHILIPS 40PFL3008H led backlight repair
so my leds can not handle the TV current...is there another cheap solution I can try for the moment? adding a resistor? totally removing the 3 leds?
I don't need peerfection
...
Last edited by daroo; 02-16-2017, 03:38 PM.Leave a comment:
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Re: PHILIPS 40PFL3008H led backlight repair
I'm quite sure that originals are 3V,
i don't know about the replacement leds from the strip, I know that the strip can be cutted and powered with 12volt every 3 leds.
At the moment I have installed (to replace the original led burnt) a Led from the strip with the resitor (with 151 written on it) because without that restistor the new led burns immediately....Leave a comment:
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PHILIPS 40PFL3008H led backlight repair
Hi, I have this tv with the backlight that doesn't work. It's a vestel set.
I've opened it and found three bad leds. I've replaced them with 3 led from a 3528 led strip.
Now every led lights up but the brightness is very low and slowly fade away (20 sec)
How can i solve this problem? maybe i can put a small resistor near the new led that I have replaced? because I think that it hasn't enough resistance
I wouldn't like to buy new tv led strip because this tv is crap and it's not worth it
Sorry for my bad english...Last edited by daroo; 02-16-2017, 01:42 PM. -
Re: dell E228WFPc 2 seconds to black
Hi, i've got the same problem in my E228WFPc, everyone suggest to replace c806 but as wcoffeyiv said, there's nothing on that spot.
I've checked t801,t802,t805,t806 trasformers and they seem to be ok.
Have you got any other suggest?
I think i'll try recapping in the meantimeLeave a comment:
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SAMSUNG UE46D8000, small stripes problem
My brother's samsung tv show vertical stripes on the left of the screen. I have tried reseating and cleaning all cables but it didn't solve the problem.
Do you think it is a t-con problem? or a bad panel?... -
Re: Plasma LG 42PC3RA led blinking
The right chip was STK795-821, I ordered it from china for 22$.
Soldered in place and the tv is working fine, no red sparkles. no need to adjust voltages.
Very very good, thanks to this fantastic forum!...Leave a comment:
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Re: Plasma LG 42PC3RA led blinking
If I disconnect the ysus the tv turns on with no picture but sound.
I removed the ic under the heatsink on the ysus because it looked shorted with my multimeter and I have read it's common that this hybrid ic goes bad.
I will order the sanyo equivalent and try the swap. Is there something I can check to see if there is anything else shorted?
Wish me good luck, this swap will be a tricky job for me
...
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