anyone happen to have one they would like to sell?
Has to be part TNPH0831AG
Thanks.
ultimatt
Member
Last Activity: 05-22-2017, 06:06 PM
Joined: 04-03-2015
Location: Irmo
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TNPH0831AG - TC-P42U2 Main or "A" board
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Re: Panasonic TC-P42U2 - no click...no blinks
Would anyone happen to have a Panasonic TXN/A1LJUUS / Board Number(s): TNPH0831AG main board they would like to sell? -
Re: Panasonic TC-P42U2 - no click...no blinks
I don't think its the PSU...fuses check good and I'm getting power to the board.
Based on what I've read here and elsewhere I think its the Main or "A" board that is bad.Leave a comment:
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Re: Panasonic TC-P42U2 - no click...no blinks
yes...no click when plugged in and power button does not click or do anything...also cannot generate click with remoteLeave a comment:
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Panasonic TC-P42U2 - no click...no blinks
When plugged in will not turn on...no click no blinks.
Suspect it is the A Board...what is the procedure to troubleshoot to confirm A Board is bad?
Thanks. -
Re: Panasonic TC-P50S30 7 Blinks
"Also heatsinked version from higher specced models will work."
Do you happen to have some parts numbers for a heatsinked SU's that will work? If I go that route would I need to replace the SU and SD as a pair?
Thanks.Leave a comment:
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Re: Panasonic TC-P50S30 7 Blinks
Well, Looks like it is an SU problem. There are shorts to ground at both the SU2 and SU3 ribbon connectors.
If I disconnect SU from both the SC and SD boards and power up will this give me a steady LED and confirm that the SU is the only problem?
Thanks.Leave a comment:
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Re: Panasonic TC-P50S30 7 Blinks
OK, so jumped SC50 with buffer connections and ground screws removed.
Got a solid power LED and the LED's on the SC and SS board both lit.
How can I isolate the problem further to the SD / SU board?
Connect them one at a time and power on with their interconnecting ribbon cable removed?
Also, I lack the ability to repair the board(s) myself can someone recommend a shop they have experience with for this? I see multiple ads on Ebay for this service.
Thanks.Leave a comment:
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Re: Panasonic TC-P50S30 7 Blinks
That is my next step...weird thing is I checked the buffer connectors for a SD or SU short to ground and could not find one..from past experience an IC short to ground has always been the problem in the past......Leave a comment:
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Re: Panasonic TC-P50S30 7 Blinks
No continuity between the 2 pins at SC2Leave a comment:
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Panasonic TC-P50S30 7 Blinks
So a neighbor just gave me this set with no picture and 7 blinks.
Per the service manual it is a SC, SD or SU problem. or maybe all 3.
I disconnected the SC ribbon cable and power connection and then turned the set on...with this configuration it was blinking 8 times (manual says SS board).
The manual indicates that there is a LED on both the SC and SS board...I can find no lit LED's on either board.
I looked it over and can't find any obvious damage...no blow caps, loose connections etc..
With the no LED's could it be... -
Re: Panasonic TH50PZ80U - power button
"Another question, for the fuse that failed can it fail due to an overload condition or short within the TV itself or can it only fail due to an overload or short from the main AC power input?"
to clarify, the power (ac) board only connects to the main power board. The main power board also has a couple of fuses.
What I am trying to determine all conditions which could cause one the two fuses on the power (ac) board to fail?
I am trying to determine how to run a start up procedure since...Leave a comment:
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Re: Panasonic TH50PZ80U - power button
Another question, for the fuse that failed can it fail due to an overload condition or short within the TV itself or can it only fail due to an overload or short from the main AC power input?Leave a comment:
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Re: Panasonic TH50PZ80U - power button
OK, got the fuse problem sorted on the power (ac) board.
Plugged the unit in and immediately got the "click" to indicate it was getting power. I immediately unplugged it.
So, I solved the fuse problem, but the question remains "why did the fuse fail"?
Is there a way to set up a DMM on the unit to tell if it has a fault that will blow the fuse?
I would assume if it does I may have five seconds or less to determine that before it blows..
ThanksLeave a comment:
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Re: Panasonic TH50PZ80U - power button
guess I will replace the fuse and see what happens...at least at that point I will only have a few $$ in it...
Thanks for your help TomLeave a comment:
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Re: Panasonic TH50PZ80U - power button
interesting...we had bad storms here of late wonder if it got hit?
Do they work in series or parallel?
guess I will order 2 fuses in case there are larger issues...Leave a comment:
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Re: Panasonic TH50PZ80U - power button
any idea what that particular fuse is protecting?Leave a comment:
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Re: Panasonic TH50PZ80U - power button
alright..decided to go back to class 101 - check fuses.
All had continuity except for 1 on the "P" AC board - see red box in attached pic.
Is this a fuse that can be had off Mouser or Digi-Key or is it some Panasonic magic fuse?
Does anyone have a link to the proper replacement?
don't know if this will be the only issue...but hopefully...
Found this TV out by the curb in the neighborhood..neighbor said "it just quit working so we got a new one"..if...Leave a comment:
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Re: Panasonic TH50PZ80U - power button
found one...thanks..
per the 6.3 no power flowchart a "no lit" condition would indicate you check the "p" board...is it referring to the "p" main or the "p" AC or both...
since the power goes into it first...what should I look for on the "P" AC board?
Thanks.Leave a comment:
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Re: Panasonic TH50PZ80U - power button
does anyone have a link to a service manual?Leave a comment:
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