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Equipment Repairs => PLASMA TV forum => Topic started by: sinclairtv on April 19, 2014,13:33:30

Title: panasonic txp50x50b - SOLVED
Post by: sinclairtv on April 19, 2014,13:33:30

This set wont turn on after being unplugged. Customer says that if its left for a long while, eventually the red light will come on then set can be turned on. According to google its a common enough fault but no solution. Caps look ok and putting a hairdryer on pwr board made no difference. Thanks

EDIT Jordans solution worked. IC from CHS

Title: Re: panasonic txp50x50b
Post by: jordan on April 19, 2014,14:33:52

Chassis GPF15DE
Change IC U-203 (TZS9EK097) on the foil side of the PSU board

Title: Re: panasonic txp50x50b
Post by: sinclairtv on April 19, 2014,14:49:55

Cheers Jordan, i will get one n try that

Title: Re: panasonic txp50x50b
Post by: jordan on April 19, 2014,14:56:58

http://sparedparts.com/parts/details/panasonic-tczaa6755u-ic-tzs9ek097-kit

Title: Re: panasonic txp50x50b - SOLVED
Post by: papisco on April 30, 2014,20:30:36

Hi, I have the same set that came in today, customer said it was disconnected from the wall socket but when plugged back in there was no standby light, the set was dead, he left it for a day and the same, I checked the power supply board but all fuses are good, caps good and the rectifier sc output good, could the same ic u203 cause this fault.
Thank you

Title: Re: panasonic txp50x50b - SOLVED
Post by: fix2003 on May 01, 2014,03:18:28

maybe u203 also check  ZD316 (BZV55-C20)
for s/c

Title: Re: panasonic txp50x50b - SOLVED
Post by: papisco on May 01, 2014,06:31:11

Thank you I will do that and give you you the result

Title: Re: panasonic txp50x50b - SOLVED
Post by: downunder on May 01, 2014,07:05:34

IC part number FAN6755UWMY.

Title: Re: panasonic txp50x50b - SOLVED
Post by: papisco on May 02, 2014,08:42:43

Hi Downunder thank you for the ic number, but should I change this ic alone or  together with the other parts u203 and the ZD, or do you  think this ic will do the job.
thank you

Title: Re: panasonic txp50x50b - SOLVED
Post by: papisco on May 02, 2014,09:21:12

Hi downunder just seen that the number is for ic u203.
thanks

Title: Re: panasonic txp50x50b - SOLVED
Post by: downunder on May 02, 2014,16:35:23

service bulletin for your perusal

Title: Re: panasonic txp50x50b - SOLVED
Post by: downunder on May 02, 2014,16:40:33

and this one

Title: Re: panasonic txp50x50b - SOLVED
Post by: papisco on May 03, 2014,07:04:41

Thank you again mate, I have put in an order for the ic now waiting to get it, I cleaned the board thoroughly and re flowed it with a heat gun, and when I tried it , it came on standby, I pressed the power button, i heard a Tak like sound and the light turned green, but no screen, from there on when I plug it the led goes green straight, no red light, and blinks about 3 times and stays green, but the screen does not come on.
I have checked the board and seen no burnt or leaked caps. any more sugesrions please.
thank you

Title: Re: panasonic txp50x50b - SOLVED
Post by: downunder on May 03, 2014,23:21:55

In all cases on Panasonics, where the tv stays on with the green LED but no pix is produced, it's always been the A-Board......OUCH.