LG 32LX1D will not turn on

[ludespeedny]

Re: LG 32LX1D will not turn on

How can I find the specs for the parts on the power board? Not sure how to identify them for replacement. The tv is a 32LX1D-UA

[newtothis]

Re: LG 32LX1D will not turn on

Ok using a multimeter on caps won't tell you if they are good or bad. You need an ESR meter for that.

Lets start off with the connector from the PSU to the Main... Set DMM to 20VDC and put black probe to the chassis (screw hole is good) and red probe to each of the pins.... If there is a marking next to the pin let us know what it says with each reading...

Pin 1, 5vSTBY = 5v
Pin 2 12VDC+ = 12v
etc
etc

[Crrose]

Re: LG 32LX1D will not turn on

I have same issue with my LG 32LX1D, no power at all. I checked my board with a multi-meter and this is what I get.
CN801 shows everything at 000 except:
3.3V = 016
12V = 007
12V = 007
ST5.0V = 016-018 doesn't hold steady

CN802 everything 000 except INV-CTL = 001

CN803 everything 000 except ST5.0V 080-081 flickers back and forth and last pin 3.3V=001

CN804 and CN805 both start at 014 and drop down to 005 on 2nd pin

IC501 and IC502 both show 003 at pin by triangle.

None of the caps look bad, no discoloration, leaks or bulges that I can see. Any idea what I need to do?

[newtothis]

Re: LG 32LX1D will not turn on

Ok firstly what setting do you have your multimeter on? ... Should be 20VDC... red probe to a pin and black to chassis (ground)

Take some pics of your boards too

[Crrose]

Re: LG 32LX1D will not turn on

Meter was set to 20VDC, black probe to chassis screw hole and red probe to pins. The same board as in post #13 but I will take pics of mine.

[newtothis]

Re: LG 32LX1D will not turn on

So when you state 016 etc you mean 00.16?

[Crrose]

Re: LG 32LX1D will not turn on

Yes, my meter doesn't show the decimal when set to 20.

[budm]

Re: LG 32LX1D will not turn on

Try measuring 9V and 1.5V batteries to see what it will show up as. Those readings are not valid. Meter's battery is good?

[Crrose]

Re: LG 32LX1D will not turn on

I tested my meter on several batteries and it shows 1.6v on all of them, I also retested the pins and get the same results. My meter only shows decimal point if I switch it to 200 from 20.

[newtothis]

Re: LG 32LX1D will not turn on

can you post a pic of your DMM please

[Crrose]

Re: LG 32LX1D will not turn on

Here it is.

[newtothis]

Re: LG 32LX1D will not turn on

Rotate your dial 180 degrees

[vinceroger69]

Re: LG 32LX1D will not turn on

not sure but maybe you should reconnect the wires back into the connectors and then push the red probe tip down the side of each wire into the connector so it touches the metal part on the end of the wire see what readings you get then.

[newtothis]

Re: LG 32LX1D will not turn on

The DMM is set wrong vin, Its set to 10A.. 180 degrees off 20VDC

[budm]

Re: LG 32LX1D will not turn on

It looks like the pointer is correctly set to '20' (if the pictures is not fooling me), it cannot be right with reading showing 081 without the decimal point on the 20 scale.

[newtothis]

Re: LG 32LX1D will not turn on

Nope, Dial is definitely 180 degrees off.. the concave side is at 20VDc and the convex at 10A

[newtothis]

Re: LG 32LX1D will not turn on

Then again......

[newtothis]

Re: LG 32LX1D will not turn on

You are right budm... just looked at some pics on Google of the DMM.... faulty DMM then

[vinceroger69]

Re: LG 32LX1D will not turn on

It looks like the pointer is correctly set to '20' (if the pictures is not fooling me), it cannot be right with reading showing 081 without the decimal point on the 20 scale.

i agree with budm meter is set right budm does he need to re install the connectors as he has no resistors to start psu up?

[newtothis]

Re: LG 32LX1D will not turn on

That's how it should look set at 20VDC