LG 42PJ150. Clicking Clicking Clicking

[tom66]

Re: LG 42PJ150. Clicking Clicking Clicking

Ok, this indicates a problem with the power board.

On the regulator you suspect to be bad, try checking Vcc voltage of it. To find out which pins/components to measure across locate the datasheet of the IC. Your ground reference will be on the negative of the large 450V capacitors or other primary-side ground (note the mains ground is not a primary side ground.)

[Moreno83]

Re: LG 42PJ150. Clicking Clicking Clicking

Here is the picture with the wires.
Gnd/gnd the voltages keep changing fast from 1.7 to 2.1

[tom66]

Re: LG 42PJ150. Clicking Clicking Clicking

Also, have you checked ALL primary-side fuses?

[Moreno83]

Re: LG 42PJ150. Clicking Clicking Clicking

All big fuses are ok.
I dont know to test a 6 legged regulator.

The big pin with eys1 measures 190v
The other pin at the end measures 1.6 and when it clicks it says 0 and then 4.5 dropping to 1.6

The 4th pin in the middle is 0.4v
The pin next.to it measures 0.03v.
Other pins i cant reach..probes to big

[tom66]

Re: LG 42PJ150. Clicking Clicking Clicking

I gave you instructions, it's pretty simple, you want to learn?

On the regulator you suspect to be bad, try checking Vcc voltage of it. To find out which pins/components to measure across locate the datasheet of the IC. Your ground reference will be on the negative of the large 450V capacitors or other primary-side ground (note the mains ground is not a primary side ground.)

To clarify you'll be looking a pin marked Vcc or Vs and also checking the datasheet for the range of acceptable voltages (UVLO voltage / start voltage / stop voltage)

[Moreno83]

Re: LG 42PJ150. Clicking Clicking Clicking

Ok thx i understand!!

[discharge]

Re: LG 42PJ150. Clicking Clicking Clicking

So this is the set, bought it from people who smoke alot as you can see haha.
The cable on the left of the PS going to the board on the let has 0v on all pins.
The cable on the PS righthand side is going to the maonboard and has 4v and 5v. ( 2 pins next to eachother)

I think 5V is stby out from psu and 4V is power on from main.
Maybe connect an external dc so this 4V reach 5V and see whats
happen.

[discharge]

Re: LG 42PJ150. Clicking Clicking Clicking

Just a short time at first.

[Moreno83]

Re: LG 42PJ150. Clicking Clicking Clicking

Thx for the replies.

Tom , I'm having trouble finding the voltages as they should be. I downloaded the schematic but it does not mention the out coming voltages on that regulator. It only mentioned the 1.8v which i measure. ( schematic is only 5 mb orso )
Maybe i'll just order the repair kit? It has the regulator/diode/resistors because i just found a short diode next to the regulator. Its open on both sides.

I measured the fuses for continuity and ohms in the primary section and they are all ok. Rest of the diodes are also fine.

[tom66]

Re: LG 42PJ150. Clicking Clicking Clicking

You need to be looking at the part on the POWER BOARD, find the datasheet (not schematic) for the part you suspect to be bad to learn how to check it.
To find the datasheet you'd search for a sequence of numbers and letters on it e.g. 3BJR089K.

[Moreno83]

Re: LG 42PJ150. Clicking Clicking Clicking

I know , but i can't find the data sheet so i looked for the schematic.
I measured like you said and i get the following :

385V ( Keeps changing because its clicking , starts around 390 ).
2.9V ( Starts with 3.2v )
0.9V

[Moreno83]

Re: LG 42PJ150. Clicking Clicking Clicking

Wich means the regulator is doing its work right?

[tom66]

Re: LG 42PJ150. Clicking Clicking Clicking

No idea until a datasheet is found to be honest, what is printed on the device?

[Moreno83]

Re: LG 42PJ150. Clicking Clicking Clicking

Yes i understand but just googling for it did not help so i can't compare.

3PAGC10014A-R

Could not find it on your site. :-)

[tom66]

Re: LG 42PJ150. Clicking Clicking Clicking

Isn't it 3BR1565JF?
http://www.datasheetbank.com/datashe...3BR1565JF.html

[Moreno83]

Re: LG 42PJ150. Clicking Clicking Clicking

Hmz , will look at the board again but what i wrote down is printed on the PS haha.

[Moreno83]

Re: LG 42PJ150. Clicking Clicking Clicking

Pff , need to work on my english and read better ……
Sorry , you are correct thats the part number/data sheet.

[Moreno83]

Re: LG 42PJ150. Clicking Clicking Clicking

I checked the data sheet but i don't see anything that i can use. I have to say that this is all new for me so if you can learn me something …i would appreciate it

[Moreno83]

Re: LG 42PJ150. Clicking Clicking Clicking

Hi Tom ,

That datasheet you provided is the basics of the regulator/controller. It does not say the voltages i must measure with this particular tv/powersupply.
Any tips to guide me in the right direction ?

thx for your time

[marty-clubber]

Re: LG 42PJ150. Clicking Clicking Clicking

Hi
Repair kit For your power supply Eay60912401

R927 22ohm Resistor
R929 22ohm Resistor
ic301 3br1565jf regulator
d304 Diode