It's like an challenge!
So, what about some instruction, what should i start with?
dyel
Member
Last Activity: 07-31-2013, 12:52 PM
Joined: 06-24-2013
Location: Randolph
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Re: LG Plasma 50PA5500
It's like an challenge! So, what about some instruction, what should i start with?
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Re: LG Plasma 50PA5500
Hi All! I bought a new (used) power supply, set it and...my TV WORKS!!!! Thanks everybody for your help! It was interesting.
Leave a comment:
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Re: LG Plasma 50PA5500
Thanks! Will try to buy a new power supply.
Hope the picture provides more details....Leave a comment:
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Re: LG Plasma 50PA5500
So, the following happened:
1. Disconnected Z-sus from the power supply - VS - 0, VA - 0 (200V is set up);
2. Disconnected Z-sus from Z-sus board - VS around 3.0, VA - 0;
3. Connected Z-sus, disconnected Y-sus from Y-sus bourd - VS around 3.0, VA - 0;
4. Z-sus and Y-sus connected, the control board is disconnected - VS around 3.0, VA - 0;
After I connected everything back, the TV stopped clicking and VS around 3.0 (versus 5-6 before).Leave a comment:
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Re: LG Plasma 50PA5500
Yes, everything is connected.Leave a comment:
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Re: LG Plasma 50PA5500
Set up to 200V:
- VS: 5.4-6.3
- VA: 0
VA can be seen (5.0-6.5) only when set up 200mV....Leave a comment:
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Re: LG Plasma 50PA5500
There you go....Leave a comment:
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Re: LG Plasma 50PA5500
Thanks!
I got the numbers.
The meter was set to DC voltage = 20V - VS was shifted from 5.4 - 6.3
VA was between 5.0-7.0 with DC voltage = 200mV.
So, what the numbers mean?Leave a comment:
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Re: LG Plasma 50PA5500
I got a multimeter. Could you draw in the picture, where should i put the negative and positive lead to check VS and VA?...Leave a comment:
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Re: LG Plasma 50PA5500
No, I don't. But seems that I can buy it.
What to check with it?Leave a comment:
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Re: LG Plasma 50PA5500
Have I set up the resistors correctly?Leave a comment:
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Re: LG Plasma 50PA5500
>>OK, can you show me how you have set up the resistors?
Please see the files.
>>Does the screen glow, visible in a dark room?
Right now it's not dark, but i'm sure that there wasn't any glow.
>>Next step will be isolation of the circuit boards.
Need to see in the picture...
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Re: LG Plasma 50PA5500
I followed "Test_2", the same:
- Click by click from power board;
- black screen.Leave a comment:
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Re: LG Plasma 50PA5500
Now it's almost clear what to do next.
Only one concern regarding to the note "this image assumes the blue wire is in the place I've highlighted".
The blue wire is in the place I've marked. Should I still follow the schema you drew?...Leave a comment:
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Re: LG Plasma 50PA5500
Now it's a next level.
1. Could you provide a picture of a resistor with leads ("through hole resistors.") (sorry, but I'm ignorant in this question). I googled it and got some picture about it.
2. "There is a grid of pins on the power supply. The connector must be unplugged on the main board end (the board with video inputs) and left connected to the power supply." - it's easy - done;
3. "Resistor must be connected between STBY and M_ON and STBY and RL_ON" could you show in the picture, what spot should...Leave a comment:
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Re: LG Plasma 50PA5500
1. When everything at their places and power applied the following happens:
- Click-click in the power supply;
- Red light in the main board (switched on/off between clicks);
- No red light in front of the TV (indicated that power applied).
2. When I tested with a paperclip the following happened:
- Click-click in the power supply;
- No red light in the main board (it was disconnected);
- Red light in front of the TV (indicated that power applied), but the screen did not show any sign of life.
If...Last edited by dyel; 07-14-2013, 09:59 AM.Leave a comment:
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Re: LG Plasma 50PA5500
Followed your steps. I did not have the TV switched on and the pictures like in [url]http://www.youtube.com/watch?v=xgrvRc2JVVQ[/url].
Only sound like "click-click-click" in the power supply.
Seems that I need to change the power supply.Re: LG Plasma 50PA5500<br /> <br />... power supply.Re: LGLeave a comment:
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Re: LG Plasma 50PA5500
Hi All,
Sorry for interrupting into your thread, but I'm trying to fix my 50PA5500 either. Today I was a bit shocked with the price to fix (almost 80% of the TV price), so I thought that maybe it was better just to buy a new one.
I have no experience with TV repair, but if it just requires to change, say, power supply, then I can do it. Only one thing left - just find out if the problem is really in the power supply.
I have the same problem mentioned in the thread - [url]https://www.badcaps.net/forum/showthread.php?t=29021[/url]....Leave a comment:
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Re: Need Help!! LG Plasma TV Wont Turn On!! Model 50PA5500
Hi,
So what the final of this 'history'? I got the same problem and trying to find a solution.
To Andy323, have you managed to resolve it?Leave a comment:
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