Re: LG 60PB5600 - No picture
Let me know if you need a close up of any particular component
Let me know if you need a close up of any particular component
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Re: LG 60PB5600 - No picture
Check these 4 igbts and see if they are shorted.Attached FilesComment
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Re: LG 60PB5600 - No picture
what is the proper method for testing the igbts?
Can they be tested while they are still on the board?Comment
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Re: LG 60PB5600 - No picture
I can't find a pinout for these transistors anywhere. Which pin is which?Comment
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Re: LG 60PB5600 - No picture
You need a Dmm with diode mode to test them, also yes they can be tested while in circuit.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: LG 60PB5600 - No picture
You're just checking If they are shorted,
Put your meter in diode or buzzer mode and see if they beep.Comment
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Re: LG 60PB5600 - No picture
Just test them across the two pins?Comment
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Re: LG 60PB5600 - No picture
Using diode mode on my DMM I get the following. The first pin number is the positive probe.
IGBT A
1-2 = 0.003V
1-3 = 0V
2-1 = 0.003V
2-3 = 0.003V
3-1 = 0V
3-2 = 0.003V
IGBT B
1-2 = 0.005V
1-3 = 0V
2-1 = 0.005V
2-3 = 0.005V
3-1 = 0V
3-2 = 0.005V
IGBT C
1-2 = 0.005V
1-3 = 0V
2-1 = 0.005V
2-3 = 0.005V
3-1 = 0V
3-2 = 0.005V
IGBT D
1-2 = 0V
1-3 = 0V
2-1 = 0V
2-3 = 0V
3-1 = 0V
3-2 = 0VAttached FilesComment
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Re: LG 60PB5600 - No picture
Does this indicate I just need to replace the "D" IGBT?Comment
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Re: LG 60PB5600 - No picture
Or are all of them bad?Comment
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Re: LG 60PB5600 - No picture
They are shorted yes remove and retest see if the short goes.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: LG 60PB5600 - No picture
All of them?Comment
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Re: LG 60PB5600 - No picture
Yes use hot air or a soldering iron.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: LG 60PB5600 - No picture
Out of curiosity - what indicates that they are shorted? I could never find a pinout for them.Comment
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Re: LG 60PB5600 - No picture
0v drop means dead short across probes.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: LG 60PB5600 - No picture
Across which pins?Comment
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Re: LG 60PB5600 - No picture
You said them all from your reading ?Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: LG 60PB5600 - No picture
Okay. I will remove them and test them off-board. Thanks to all for your help- IGBTs are very confusing to me.Comment
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Re: LG 60PB5600 - No picture
No worries, also yes its very confusing when you first start but we all start somewhere matey
Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: LG 60PB5600 - No picture
After removal, all four of those IGBTs still appear to be shorted. Is it common for all of them to go at the same time?
Also- are there any other components I should check while I have the board out?Comment
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The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
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