Re: Panasonic th-p42x10z

tw2005, we appreciate the help and the time that you give. Who would think that it wouldn't show an error with that drop in voltage. My thoughts without investigating are that either the Power board is saying all is fine or that this error isn't being checked for after the display is turned on. Probably the first is most likely and is part of the board fault that it thinks it's in regulation with load when it's not.
Nick hasn't given up on his yet, he is just busy with other things at the moment. Kind regards
Russell

Re: Panasonic th-p42x10z

Nick has very kindly let me try his power supply pcba and I'm pleased to confirm that the picture is now completely normal. Vsus and Vda are stable under load unlike my pcba where they seemed to sag. So am now confident that this was causing the picture issues.
Unfortunately this doesn't help Nick with his set though.
Kind regards
Russell

Re: Panasonic th-p42x10z

Thanks for both your inputs.
Just in case it has some further relevance, the panel Vsus is labeled at 187V & Ve 125V. I measure 188v for Vsus but when the sound and picture kick in it drops to 169V. I don't have a scope to see what the waveform is like. The others (Ve, Vset, Vad, Vscn) don't change significantly, but Vda drops from 60.2V to 56.2V. These were measured with a Freeview HD signal running, rather than white screen.
Am happy to get the SS board and give it a try it is TNPA4774AE and also there looks to be a small board SS2 Sustain...

Re: Panasonic th-p42x10z

Hi Nick
Thanks for the info and offer. Is it Platinum-TV on Trademe that you have been dealing with?
I've found this thread really useful (thanks tw2005), downloaded the service manual attachments and taken a number of measurements previously recommended.

I've used the composite video input to try out various colour screens. Generally the borders seem to have close to correct colouring and the middle incorrect.

[url]https://www.badcaps.net/forum/attachment.php?attachmentid=140842&stc=1&d=1473480491[/url]...

Re: Panasonic th-p42x10z

Hi lambchopsnz & tw2005
I have this same model Plasma, but with a different fault. Not sure if you are still working on yours lambchopsnz, but am open to taking measurements or sending you a board to help diagnose if this helps. Mine doesn't have a flashing LED code, but does have a display issue. The image doesn't seem to get overwritten/reset completely and previous parts of images show through dependent on the images/colours at the time.
Hopefully this partial screen shot gives a bit of an idea of the issue.
Not sure if this...

Re: New Members - please post your introductions here

Hi, I'm Russell from New Zealand. I have long been an electronics hobbyist and have also previously worked in Electronics Manufacturing. I have a Panasonic TH-P42X10Z that I am trying to repair hence joining this forum.