Re: Panasonic TH-P42A2G SN Board Problem 4 blinks
I have replace these:
>> 1st:
Q661 - 30F125
D641 - RF2001
Q402 - RJP63F4A
Q401,Q621 - RJP56F4A
Q421 - RJP43F4A
Q441 - DG501LW
Q451 - DG501RP
(bought from utsource.net)
when I turn on TV then Q401 & Q661 shorted.
>> 2nd:
Q401 - 30J124
Q661 - 30J124
Q701 - MMBT3904
Q702 - MMBT3906
(from local supply)
attach bulb 100W/220V across SN2-P2 for safety.
when turn...
heri
Member
Last Activity: 04-22-2016, 02:38 AM
Joined: 02-26-2016
Location: Gresik, Jawa Timur
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Re: Panasonic TH-P42A2G SN Board Problem 4 blinks
its same 50 ohms.
I see thats why my replacement short again..
Only these 2 transistor Q701 & Q702 I have replace..will then search other replacement as its specification....Last edited by heri; 04-09-2016, 04:40 AM.Leave a comment:
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Re: Panasonic TH-P42A2G SN Board Problem 4 blinks
IC461 (PS9856) measured about 50 ohms pin 8 to ground, but open circuit if removed from board.
Is this normal or this IC broken..?
(symptom now change 6 blinks)Last edited by heri; 04-09-2016, 03:11 AM.Leave a comment:
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Re: Panasonic TH-P42A2G SN Board Problem 4 blinks
Where can I buy a TNPA 5066 SN Board for my plasma tv..?
Since I'm desperate repairing this bad board..:/Leave a comment:
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Re: Panasonic TH-P42A2G SN Board Problem 4 blinks
note that all IGBTs are okay, since I've purchased new IGBT items from utsource.netLeave a comment:
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Re: Panasonic TH-P42A2G SN Board Problem 4 blinks
measured Q701 & Q702 is short (inverter block), then I replace with MMBT3904 & MMBT3906..
trial turn on power..board short again, these transistor short again..
what causing these Q701 & Q702 short..?Leave a comment:
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Re: Panasonic TH-P42A2G SN Board Problem 4 blinks
Alastair..can you please inform the diode D701 D702 Q702 and Q501 part or datasheet ..? Thx b4.Leave a comment:
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Re: Panasonic TH-P42A2G SN Board Problem 4 blinks
found Q402 & Q661 dead short.
it should be caused by other circuit block near..isn't it..?
@tw2005 resistance of sn2 is about 2000 ohm then seconds later its open circuit.. i think its caused by cap 412 (250v/1.5uF).Leave a comment:
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Re: Panasonic TH-P42A2G SN Board Problem 4 blinks
where to find chassis code..?Leave a comment:
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Re: Panasonic TH-P42A2G SN Board Problem 4 blinks
using dc measure:
vsus 191v
vmid 32v
I forgot to check ohm for SC2 pin, I've been took off diodes i suspect short D401, D641, D722, & D724 that not short.
(sc2 is open / no short, i'll check again after resolder these diodes)
Is those IGBTs should take off from board to check..?
I think SS board is okay since i can turn off using remote.Last edited by heri; 03-06-2016, 03:57 AM.Leave a comment:
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Re: Panasonic TH-P42A2G SN Board Problem 4 blinks
i disconnect tnpa 5066 -> power (sn3,sn2) & ribbon cable (sn20).
tv no error & response to remote control.Leave a comment:
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Re: Panasonic TH-P42A2G SN Board Problem 4 blinks
checking voltages:
vsus in power supply is 423v
vmid in ss board 62v
is this okay..??...Leave a comment:
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Re: Panasonic TH-P42A2G SN Board Problem 4 blinks
i have circuit same as tc-p42c2...Leave a comment:
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Panasonic TH-P42A2G SN Board Problem 4 blinks
Dear forum,
I have pan 42" plasma which can't start and display 4 blink on power red led.
I've seen other thread this caused by SN board..so i unplug it..then TV can start on with green power led and can response to remote control.
Please help where should i start searching failure..??... -
Re: red display
i have same problem displaying red color on my laptop..Leave a comment:
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