LG Flatron L204WS

[matthmal]

Re: LG Flatron L204WS

Big Resistor:
POWER ON 200VDC -> -0.01V

POWER OFF 20k ohms -> 000

Smaller Resistor:
POWER ON 200VDC -> -0.01V

POWER OFF 20k ohms -> 000

[selldoor]

Re: LG Flatron L204WS

What! Not sure why you would pick on 20k ohms? I said a range to cover what it said
on Hobby resistor?
According to that the smaller one (Green Blue Silver Gold?) is Less that 1 ohm so meter should be on 200ohms or less
Not sure what the bands are on the bigger one ( Red Red Brown Gold?) is 220ohms so meter should be on 2000 ohms
Try it again.
Any joy with the voltage readings on the connector without the min board attached?

[matthmal]

Re: LG Flatron L204WS

i did check the site that you gave me. the big resistor is red red brown brown 2.21kΩ 0.25% so i had to choose 20k ohms

As for the smaller resistor I seemed to me as the gold was brown, anyways I retried and now the result is the same as before.

Let me do the voltage readings....

EDIT: to be exact.. the result of the small one is 001

[matthmal]

Re: LG Flatron L204WS

Pins test:

POWER ON 200VDC

ILC -> -2.0
DIM -> -2.0
M/F -> -2.0
NC -> 0
GND -> -2.0
5.1V -> 2.1
5.1V -> -2.1
GND -> -2.0
GND -> -2.0
15V -> 2.0
15V -> -2.0

[selldoor]

Re: LG Flatron L204WS

Does the red red brown brown resistor have a blue ring I cant see? if not may have to lift one end of each resistor and try again.

Connector voltage are bad and boring!! we need more input from more experienced guys, I will go over the thread and have a think.
EDIT
Were the voltages steady ar varying.
Have you got the light plugged in.
Can you re measure the Big cap VDC600 and care. Is the voltage stady or varying.

[matthmal]

Re: LG Flatron L204WS

ok i will try to lift the ends and try again and no that resistor doesnt have a blue ring.

No the voltages weren't steady, they were actually varying.

On the other hand, the voltage of the big cap is steady.

[matthmal]

Re: LG Flatron L204WS

the results are the same with the difference that now the small one has a beap

[selldoor]

Re: LG Flatron L204WS

Take the Big resistor right off and check it on every range.

[matthmal]

Re: LG Flatron L204WS

you mean take it off the board and check the resistance on every possible mode (i.e. 2000 ohms, 20k, 200k, and 2M?

[selldoor]

Re: LG Flatron L204WS

Yes-That was my plan , However you can just do it with one leg off the board.
Problem is there is no Red Red Brown Brown resistor so oh wait a minute there is a Brown brown Red Red 1.1kohms but then it would have done something on 20k
Yes - just try every range

[matthmal]

Re: LG Flatron L204WS

i have already tried them with one leg off the board and had the same results

[selldoor]

Re: LG Flatron L204WS

i have already tried them with one leg off the board and had the same results

Well I would say the big one is definitely dead. Just to be certain is the result the same as probes apart or pins together.

[matthmal]

Re: LG Flatron L204WS

will try in 1 hour time as i'm away from the pc. so do you think that by replacing that component the monitor will start working

[selldoor]

Re: LG Flatron L204WS

Sorry - not a clue - its just one less worry


edit there is a service manual here

www.scribd.com/doc/44903337/L204WS-S

forget that - i hate facebook

pdf attached

[matthmal]

Re: LG Flatron L204WS

is that a good manual?

There is a red red brown brown. Look: http://www.hobby-hour.com/electronic...calculator.php

[matthmal]

Re: LG Flatron L204WS

the link directs you to the homepage. look at this attachment

[matthmal]

Re: LG Flatron L204WS

anyways i retried to test the big one on 2000ohms and it gave me an output of 003

[selldoor]

Re: LG Flatron L204WS

is that a good manual?

There is a red red brown brown. Look: http://www.hobby-hour.com/electronic...calculator.php

To be honest this is not my monitor, I'm checking it for someone else, is it worth buying for a cheap price? Or there isn't any chance of fixing?

Its better than some - worse than others - doesnt have a parts list.
nor full schematic. Does have some tests you can do.

Yes I saw that but it has a BLUE RING as well doesnt really matter as you have tested on all ranges right so it is either open or shorted if it is showing
OL or whatever your meter shows for out of range OR 0.00

I dont really know if it is fixable ( You could replace whole boards - have you priced them) - you say the bulbs are ok) BUT I think you said it had been struck by power surge so anything could be fried

[matthmal]

Re: LG Flatron L204WS

yeah it had been struck by lightning, i havent said that the bulbs of these are ok, I mean the dell is ok hehe. Well you think it cannot be fixed? this is not mine, just checking it out to see if it is worth buying or not.

I am also checking the tv which is not practically mine.

I own the 2 dells and 1 HP

[selldoor]

Re: LG Flatron L204WS

Well the l204WS seems the best of a bad bunch- but I dont know how you would place a value on it I dont know if it is a common model or if the panel fits other models.
I imagine it cost quite a lot new but if no-one wants the parts its just scrap.
MIght depend on how well you know the seller - what do they think it is worth. Can they claim on house insurance for it? How much would they get. Have they had an estimate from a professional to get it fixed. Lots of questions - sorry I have no answer. Will think further on the others. I once bought a universal inverter board on ebay from china for a couple of £ might be an option.