LG 32LS4300 , no red light , no power

[angel-boy]

LG 32LS4300 , no red light , no power
- mainboard - eax64664903 1.0
-power source - eax64560501 - 1.6

is no red light when power plug in, i dod not find schematic

i edit photo with voltage . If i remove cable between power and main. i have only 3.5v

Hope you can help me.

[Hamie]

Re: LG 32LS4300 , no red light , no power

By the looks of it you have a faulty mainboard.

If you jump ps-on and inv-on do the backlights come on?

[angel-boy]

Re: LG 32LS4300 , no red light , no power

You mean pwr-on with inv-on , no blacklight
p-dim , or a-dim with inv-on , no blacklight

[Hamie]

Re: LG 32LS4300 , no red light , no power

pwr-on to inv-on.

[angel-boy]

Re: LG 32LS4300 , no red light , no power

No blacklight .

[Hamie]

Re: LG 32LS4300 , no red light , no power

What about if you also give voltage to p-dim aswel?

[Andrew F. Ali]

Re: LG 32LS4300 , no red light , no power

I think you have to bridge with a 100 ohm resistor the 3.54Vdc STD-BY - to the PWR-ON, check if you are getting 12Vdc and 24Vdc then using another 100 ohm resistor bridge from 3.54Vdc STD-BY to INV-ON and check if Backlights come on.

[angel-boy]

Re: LG 32LS4300 , no red light , no power

PWR-ON allrealy have 3.5v , i have 12v and 24v, check the photo.

i will try 100ohm rezistor between pwr-on to inv-on

[Andrew F. Ali]

Re: LG 32LS4300 , no red light , no power

OK...I did not look at the photo before.....I'll have to agree with Hamie...looks like a Main Bd issue...

[victor_cj]

Re: LG 32LS4300 , no red light , no power

Check voltage/software at IC401 24C256, IC1401 MX25L8006E from main board. In the worst case you have IC101 LGE2111A-T8 faulty.

[angel-boy]

Re: LG 32LS4300 , no red light , no power

IC1401 MX25L8006E have 3.5v pin 8
IC401 24C256 - no voltaje, but when try to measure a sound is hearing from IC101 LGE2111A-T8
,
and IC101 LGE2111A-T8 is a little hot


-------
after 5-10 min , i want to measure againg and i notice that the red light is on, and now is starting.

[fzabkar]

Re: LG 32LS4300 , no red light , no power

A Google search suggests that the same mainboard (EAX64664903) is used in the 32LK330U:

http://elektrotanya.com/?q=showresul...at2=schematics

Also, the 32LM3400 uses the same PSU (EAX64560501):

http://elektrotanya.com/?q=showresul...at2=schematics

[pierce012]

Re: LG 32LS4300 , no red light , no power

IC1401 MX25L8006E have 3.5v pin 8
IC401 24C256 - no voltaje, but when try to measure a sound is hearing from IC101 LGE2111A-T8
,
and IC101 LGE2111A-T8 is a little hot


-------
after 5-10 min , i want to measure againg and i notice that the red light is on, and now is starting.

Did you ever solve this?