Hello,
I have the exact same problem with a 55EC930V.
Here is what happens with the "self-test" procedure explained by Diah.
Should I try to replace the T-CON or can I consider that the OLED panel is dead ?
Thanks !
...
romulus123
New Member
Last Activity: 03-13-2025, 02:04 PM
Joined: 06-06-2015
Location: Namur
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Re: LG 55EC930V OLED Is panel OK?
Hello,
I have the exact same problem with a 55EC930V.
Here is what happens with the "self-test" procedure explained by Diah.
Should I try to replace the T-CON or can I consider that the OLED panel is dead ?
Thanks !...
Last edited by romulus123; 12-08-2020, 03:21 PM. -
Re: Panasonic TX-P42X20E
Hello,
I am back !
I replaced the dead components ...
Test without SN: 8 blinks => OK
Test without SS: 6 blinks => OK
I reconnected everything => PAF! 2 blinks
Q021, Q022, Q451, Q421, Q401, Q402 and Q661 are dead !!!!!
thank you again...Leave a comment:
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Re: Panasonic TX-P42X20E
Thank you a lot !
I'll test the components, again and again...
Indeed (and happily) SN is not too damaged, the first time it seems that D641 was not short circuit ... I do not understand why Q661 + D641 are dead now...
I obtained values ranging from kilo-ohm to mega-ohm between each leg of all the transistors and diodes (exept Q661 and D641).
IC773 seems ok, the voltage regulator IC771 and IC724 works.
No short-circuit around the Q451 (DG501RP).
To terminal block SN2: 17.5m
...Leave a comment:
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Re: Panasonic TX-P42X20E
Hey !
I have not found other short circuit...
I will replace:
Q001, Q002, Q021, Q022: RJP30E4
IC131 : M81735FP
Q661 : RJP63F3A
D641 : RF2001TM3SW
Q701 : MMBTA92 (not shorted)
No other opinions before ordering ?
Last edited by romulus123; 07-01-2015, 02:46 PM.Leave a comment:
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Re: Panasonic TX-P42X20E
Hey ! Thank you again.
I will replace Q701 (I had already replaced Q702) Q001, Q002, Q021, Q022, Q661 and D641.
Do you have a method to test the driver M81735FP ? It is not shorted ... (The components are cheap but if they burn out again... it's going to be expensive)
A SS board failure can destroy the SN ... But is that a SN failure can destroy the SS board ?
I remain puzzled about the cause of the destruction of the new transistors ...
If it's just because of a forgotten solder joint on the driver...Last edited by romulus123; 06-30-2015, 02:58 PM.Leave a comment:
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Re: Panasonic TX-P42X20E
Thank you Flocko
(Small mistake in the first post : I replaced IC773 by a TC7SH14F and D451 by a RF101L4S)
I've read your topic, and also those of TW2005 ... It helped me a lot !
All components seems to be Ok, exept Q001, Q002, Q021, Q022 on the SS and Q661, D641 on the SN.Last edited by romulus123; 06-29-2015, 10:45 AM.Leave a comment:
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Panasonic TX-P42X20E
Hello !
(Sorry for my bad English)
I got a Plasma TV Panasonic TX-P42X20E down.
Error code 4 => SN and SS was shorted.
I replaced:
SS = ----TNPA5072----
Q001, Q002, Q021, Q022: RJP30E4
Q101, Q102: RJK2017
IC131: M81735FP
SN = ----TNPA5066----
D451: D1FK60
D481: FU20TM5S
Q451: DG501RP
Q421: RJP43F4A
Q661: RJP63F3A
Q401, Q402: RJP56F4A
IC773: 5N74AHCIG14DBVR
IC131: M81737FP
Q702: 2PD601 (not shorted)
Q818: 2SK3018
IC521: M81737FP...Last edited by romulus123; 06-29-2015, 07:53 AM. -
Re: New Members - please post your introductions here
Hi from Belgium !
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