Re: PANASONIC plasma TH-P42X20A, SOS4,1,10,6,8
Just had a go at doing a quick repair of this TNPA5066.
Q661 shorted on 2 legs
D451 shorted
D481 shorted
Q702 shorted
IC773 bad, resistance pins 3-4 128ohms, good reads over 2Mohms
Q818 seemd ok in cct but replaced with 2N7002
Q701 seemed ok and left
Looking all good and similar to what I've done on the 5081.
And, bang
Now, it's really bad just like the last time I got it wrong.
Q701 shows short. maybe I missed testing or mistested this, that I'll never know now.
So, Q661 again dead, Q818 shows short, R707 blown, Q702 short, D701 short
Now in cct Q421 short, D421 short, D401 short, Q402 short, Q401 short,
IC771 5v reg now showing shorted output, that powers the inverter IC but was not shorted originally.
Just had a go at doing a quick repair of this TNPA5066.
Q661 shorted on 2 legs
D451 shorted
D481 shorted
Q702 shorted
IC773 bad, resistance pins 3-4 128ohms, good reads over 2Mohms
Q818 seemd ok in cct but replaced with 2N7002
Q701 seemed ok and left
Looking all good and similar to what I've done on the 5081.
And, bang
Now, it's really bad just like the last time I got it wrong.
Q701 shows short. maybe I missed testing or mistested this, that I'll never know now.
So, Q661 again dead, Q818 shows short, R707 blown, Q702 short, D701 short
Now in cct Q421 short, D421 short, D401 short, Q402 short, Q401 short,
IC771 5v reg now showing shorted output, that powers the inverter IC but was not shorted originally.
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