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#21 |
Badcaps Veteran
Join Date: Feb 2013
City & State: SA
My Country: Germany
I'm a: Professional Tech
Posts: 2,584
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#22 |
Senior Member
Join Date: Apr 2016
City & State: AZ
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 153
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#23 |
Badcaps Veteran
Join Date: Feb 2013
City & State: SA
My Country: Germany
I'm a: Professional Tech
Posts: 2,584
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#24 | |
Senior Member
Join Date: Apr 2016
City & State: AZ
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 153
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![]() Quote:
4 full A-B strips (42 old LEDs + 6 new LEDs): 110.0v So, 6 new LEDs = 110v - (42*2.1917v) = 17.95v = ~3v per LED Last edited by Daveleone; 02-02-2021 at 07:02 PM.. |
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#25 | |
Badcaps Veteran
Join Date: Feb 2013
City & State: SA
My Country: Germany
I'm a: Professional Tech
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can you show clear photo on yours powerboards at the LED Sockets from both side please. |
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#26 | |
Senior Member
Join Date: Apr 2016
City & State: AZ
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 153
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The blue/white pair of wires powers the 3 strip chain, while the blue/black pair of wires powers the 4 strip chain. Last edited by Daveleone; 02-03-2021 at 10:21 AM.. |
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#27 |
Badcaps Veteran
Join Date: Feb 2010
City & State: S.F. Bay area
My Country: USA
Line Voltage: 120V 60Hz
I'm a: Knowledge Seeker
Posts: 39,116
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![]() You LCD panel does not use the same amount of LED for each LED string, if you look at the Voltage chart and the Voltage rating of the filter caps for the two boost converter circuits you will see the two LED drive Voltages for the Low LED string and High LED string, thus different LED drive Voltages.
Pictures provided by shopjimmy. LG EAY62810701 (3PAGC10124A-R) Power Supply / LED Board https://www.shopjimmy.com/lg-eay6281...ply-led-board/
__________________
Never stop learning Basic LCD TV and Monitor troubleshooting guides. http://www.badcaps.net/forum/showthr...956#post305956 Voltage Regulator (LDO) testing: http://www.badcaps.net/forum/showthr...999#post300999 Inverter testing using old CFL: http://www.badcaps.net/forum/showthr...er+testing+cfl Tear down pictures : Hit the ">" Show Albums and stories" on the left side http://s807.photobucket.com/user/budm/library/ TV Factory reset codes listing: http://www.badcaps.net/forum/showthread.php?t=24809 |
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#28 |
Senior Member
Join Date: Apr 2016
City & State: AZ
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 153
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![]() Just to close this thread out, I got the replacement original LED strip and everything works great. No hot spots. Case closed.
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#29 | |
Badcaps Veteran
Join Date: Feb 2010
City & State: S.F. Bay area
My Country: USA
Line Voltage: 120V 60Hz
I'm a: Knowledge Seeker
Posts: 39,116
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![]() Quote:
So where did you get the correct replacement strips from so in the future people will know where to get them? |
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#30 |
Senior Member
Join Date: Apr 2016
City & State: AZ
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 153
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![]() I ended up buying the exact replacement strip for mine, by part number (LZ5501LGEPWA-DL84-R-REV.0) off of eBay, instead of using the "updated" POLA2.0 parts. Found a guy selling the A-side strips for $21.99 or best offer w/free shipping. I offered him $10 for one and he accepted.
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#31 |
Badcaps Veteran
Join Date: Jul 2011
City & State: Sunny Jacksonville FL
My Country: USA
Line Voltage: 120 Volts 60 HZ
I'm a: Knowledge Seeker
Posts: 2,601
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![]() Let me ask a stupid question but why can you not use the original diffuser that were on the led strips and see how that would work on the replacement led strips
I realize that this might be some work but would be justifiable to do that
__________________
9 PC LCD Monitor 6 LCD Flat Screen TV 30 Desk Top Switching Power Supply 10 Battery Charger Switching Power Supply for Power Tool 6 18v Lithium Battery Power Boards for Tool Battery Packs 1 XBox 360 Switching Power Supply and M Board 25 Servo Drives 220/460 3 Phase 6 De-soldering Station Switching Power Supply 1 Power Supply 1 Dell Mother Board 15 Computer Power Supply 1 HP Printer Supply & Control Board * lighting finished it * These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10% 1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later ) 2 Hem Saw Computer Stack Board All of these had ![]() All of the mosfet that are taken out by bad caps ![]() Last edited by sam_sam_sam; 02-11-2021 at 06:03 PM.. |
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#32 | |
Senior Member
Join Date: Apr 2016
City & State: AZ
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 153
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![]() Quote:
Last edited by Daveleone; 02-11-2021 at 06:16 PM.. |
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#33 | |
Badcaps Veteran
Join Date: Jul 2011
City & State: Sunny Jacksonville FL
My Country: USA
Line Voltage: 120 Volts 60 HZ
I'm a: Knowledge Seeker
Posts: 2,601
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