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Equipment Repairs => PLASMA TV forum => Topic started by: waxhead on July 21, 2010,14:56:27

Title: TH-42PX70 Panasonic Flashing Light
Post by: waxhead on July 21, 2010,14:56:27

any help would be great.

tv trys to power on but seems to trip out and flash standby light 7 TIMES, anyone with a service manual for this model let me know what this means

many thanks
craig

Title: Re: TH-42PX70 Panasonic Flashing Light
Post by: brainstorm on July 22, 2010,09:29:51

Hi

7 blinks usually indicates faults in SC, SU or SD.

Best thing to do is disconnect SU board completely and switch on and see if you get half a picture or if fault remains and then do the same procedure for SD board. (You can leave screen ribbons connected)

If still the same then SC board is likely culprit, the transistors can go S/C

Hope this helps

Brian

Title: Re: TH-42PX70 Panasonic Flashing Light
Post by: sophurd on July 26, 2010,22:17:31

Hi
I have a TC-P42X1 panasonic with a similar problem .
i replaced all 3 boards and still getting 7 blinks ,
Is there any chance that the power supply can cause
this problem ?

Title: Re: TH-42PX70 Panasonic Flashing Light
Post by: waxhead on July 27, 2010,14:49:41

i think its this board at fault

http://cgi.ebay.co.uk/PANASONIC-PLASMA-TV-D-BOARD-TNPA4133-TH-42PX70BA-/380252314015?cmd=ViewItem&pt=UK_AudioTVElectronics_Video_Televisions&hash=item5888cdd99f (http://cgi.ebay.co.uk/PANASONIC-PLASMA-TV-D-BOARD-TNPA4133-TH-42PX70BA-/380252314015?cmd=ViewItem&pt=UK_AudioTVElectronics_Video_Televisions&hash=item5888cdd99f)

Title: Re: TH-42PX70 Panasonic Flashing Light
Post by: brainstorm on July 28, 2010,04:11:46

Hi

Just be careful when ordering parts that you check the model number i.e Models ending with BA and B.
Some parts are different

Regards

Brian