LG 32LF2510 led red blinking 5 or 6 times

[GmA77]

Hello, i have a LG 32LF2510 that not power up, led red blinking 5 or 6 times, no sound and no picture.

When i plug, i have 12V, 24V and 5V. The optical audio led is on and the IC100 on the mainboard is hot.

This is possible to help me to find the problem ?

Thanks in advance for your help

Powerboard: LGP32-09P Rev 1.1
Mainboard: LD91 A/G EAX60686904(2) 09.04.09 N.T.Y

[dskall]

Re: LG 32LF2510 led red blinking 5 or 6 times

Do you have backlights? Pson? Need to post voltages. Identify pins and voltages you measure.

[budm]

Re: LG 32LF2510 led red blinking 5 or 6 times

Power supply board connector pins are labeled so make sure to put down pin name and follow by the DCV reading so we can see what are missing.
We also need the pictures of the whole back side of the TV showing all the boards.

[GmA77]

Re: LG 32LF2510 led red blinking 5 or 6 times

Hello, thank you for your help. Here is the reading of the voltages on the spindle P201 and P203 of the powerboard.

P201

NC. - PWM-DIM :1.14V
BRI :3.4V - ERROR :1.14V
NC. - INV ON/OFF :5V
24V :25.17V - 24V :25.18V
GND - GND
12V :11.87V - 12V :11.87
GND - GND
5V :5.12V - 5V :5.12V
5V :5.12V - 5V :5.12V
GND - GND
GND - GND
NC. - POWER ON :5.04V


P203

.Error :
PWM-DIM :1.14V
INV ON/OFF :5.08V
BRI :3.40V
GND .
GND .
GND .
GND .
GND .
24V :25.18V
24V :25.18V
24V :25.19V
24V :25.18V
24V :25.18V

[budm]

Re: LG 32LF2510 led red blinking 5 or 6 times

You do have all the correct command signals.
Do you have backlights? If not then you need to remove the shield from the inverter board and take good clear pictures of the inverter board next.
How hot is the IC100?

"Hello, i have a LG 32LF2510 that not power up, led red blinking 5 or 6 times, no sound and no picture." So it stops blinking after 6 times?

[GmA77]

Re: LG 32LF2510 led red blinking 5 or 6 times

I do not have a backlight and I just see that I have an image.
The IC100 is about 40 degrees Celsius.

[vinceroger69]

Re: LG 32LF2510 led red blinking 5 or 6 times

in your second picture there are two white fuses test the voltage on each side of the two fuses

[GmA77]

Re: LG 32LF2510 led red blinking 5 or 6 times

I have 25.21V in eatch side.

[vinceroger69]

Re: LG 32LF2510 led red blinking 5 or 6 times

thats ok so none seem blown (did you test both sides of each fuse? some people only check one side) and in a really dark room when you first turn the tv on this maybe only 1 too 2 seconds flash on the screen

[GmA77]

Re: LG 32LF2510 led red blinking 5 or 6 times

Yes I tested well on each side. Negative on chassis and test with positive on each side.
I do not see a flash light (I will repeat the test).
I find the following voltages on mofsets 7601 to 7608

MOS7601: 5.40V
MOS7602: 5.40V
MOS7603: 0V
MOS7604: 0V
MOS7605: 5.40V
MOS7606: 5.40V
MOS7607: 0V
MOS7608: 0V

it's good ?

[vinceroger69]

Re: LG 32LF2510 led red blinking 5 or 6 times

try the flash test first as this gives us a idea if you have the common 2 seconds to black fault which is usually a failed invertor transfomer of ccfl/eefl tube

[GmA77]

Re: LG 32LF2510 led red blinking 5 or 6 times

I just tested and I have no flash

[vinceroger69]

Re: LG 32LF2510 led red blinking 5 or 6 times

hopefully budm will have some ideas what too check next as im still learing myself seems odd you are missing those voltages on those 4 mosfets

[GmA77]

Re: LG 32LF2510 led red blinking 5 or 6 times

It's possible coming from the capacitor in inverter ?
I desolder them to test ?